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708.0149 | Modeling the spectral energy distribution of ULIRGs I: the radio spectra | As a constraint for new starburst/AGN models of IRAS bright galaxies we
determine the radio spectra of 31 luminous and ultraluminous IRAS galaxies
(LIRGs/ULIRGs). We construct the radio spectra using both new and archival
data. From our sample of radio spectra we find that very few have a straight
power-law slope. Although some sources show a flattening of the radio spectral
slope at high frequencies the average spectrum shows a steepening of the radio
spectrum from 1.4 to 22.5 GHz. This is unexpected because in sources with high
rates of star formation we expect flat spectrum, free-free emission to make a
significant contribution to the radio flux at higher radio frequencies. Despite
this trend the radio spectral indices between 8.4 and 22.5 GHz are flatter for
sources with higher values of the FIR-radio flux density ratio q, when this is
calculated at 8.4 GHz. Therefore, sources that are deficient in radio emission
relative to FIR emission (presumably younger sources) have a larger thermal
component to their radio emission. However, we find no correlation between the
radio spectral index between 1.4 and 4.8 GHz and q at 8.4 GHz. Because the low
frequency spectral index is affected by free-free absorption, and this is a
function of source size for a given mass of ionized gas, this is evidence that
the ionized gas in ULIRGs shows a range of densities. The youngest LIRGs and
ULIRGs are characterized by a larger contribution to their high-frequency radio
spectra from free-free emission. However, the youngest sources are not those
that have the greatest free-free absorption at low radio frequencies. The
sources in which the effects of free-free absorption are strongest are instead
the most compact sources. Although these have the warmest FIR colours, they are
not necessarily the youngest sources.
| astro-ph | as a constraint for new starburstagn models of iras bright galaxies we determine the radio spectra of 31 luminous and ultraluminous iras galaxies lirgsulirgs we construct the radio spectra using both new and archival data from our sample of radio spectra we find that very few have a straight powerlaw slope although some sources show a flattening of the radio spectral slope at high frequencies the average spectrum shows a steepening of the radio spectrum from 14 to 225 ghz this is unexpected because in sources with high rates of star formation we expect flat spectrum freefree emission to make a significant contribution to the radio flux at higher radio frequencies despite this trend the radio spectral indices between 84 and 225 ghz are flatter for sources with higher values of the firradio flux density ratio q when this is calculated at 84 ghz therefore sources that are deficient in radio emission relative to fir emission presumably younger sources have a larger thermal component to their radio emission however we find no correlation between the radio spectral index between 14 and 48 ghz and q at 84 ghz because the low frequency spectral index is affected by freefree absorption and this is a function of source size for a given mass of ionized gas this is evidence that the ionized gas in ulirgs shows a range of densities the youngest lirgs and ulirgs are characterized by a larger contribution to their highfrequency radio spectra from freefree emission however the youngest sources are not those that have the greatest freefree absorption at low radio frequencies the sources in which the effects of freefree absorption are strongest are instead the most compact sources although these have the warmest fir colours they are not necessarily the youngest sources | [['as', 'a', 'constraint', 'for', 'new', 'starburstagn', 'models', 'of', 'iras', 'bright', 'galaxies', 'we', 'determine', 'the', 'radio', 'spectra', 'of', '31', 'luminous', 'and', 'ultraluminous', 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708.015 | Range-based attacks on links in random scale-free networks | $Range$ and $load$ play keys on the problem of attacking on links in random
scale-free (RSF) networks. In this Brief Report we obtain the relation between
$range$ and $load$ in RSF networks analytically by the generating function
theory, and then give an estimation about the impact of attacks on the
$efficiency$ of the network. The analytical results show that short range
attacks are more destructive for RSF networks, and are confirmed numerically.
Further our results are consistent with the former literature (Physical Review
E \textbf{66}, 065103(R) (2002)).
| cond-mat.stat-mech | range and load play keys on the problem of attacking on links in random scalefree rsf networks in this brief report we obtain the relation between range and load in rsf networks analytically by the generating function theory and then give an estimation about the impact of attacks on the efficiency of the network the analytical results show that short range attacks are more destructive for rsf networks and are confirmed numerically further our results are consistent with the former literature physical review e textbf66 065103r 2002 | [['range', 'and', 'load', 'play', 'keys', 'on', 'the', 'problem', 'of', 'attacking', 'on', 'links', 'in', 'random', 'scalefree', 'rsf', 'networks', 'in', 'this', 'brief', 'report', 'we', 'obtain', 'the', 'relation', 'between', 'range', 'and', 'load', 'in', 'rsf', 'networks', 'analytically', 'by', 'the', 'generating', 'function', 'theory', 'and', 'then', 'give', 'an', 'estimation', 'about', 'the', 'impact', 'of', 'attacks', 'on', 'the', 'efficiency', 'of', 'the', 'network', 'the', 'analytical', 'results', 'show', 'that', 'short', 'range', 'attacks', 'are', 'more', 'destructive', 'for', 'rsf', 'networks', 'and', 'are', 'confirmed', 'numerically', 'further', 'our', 'results', 'are', 'consistent', 'with', 'the', 'former', 'literature', 'physical', 'review', 'e', 'textbf66', '065103r', '2002']] | [-0.1458189867120128, 0.05051849328328688, -0.04350085109255688, 0.07495662772237476, -0.016558337247007268, -0.11729392748282746, 0.1087862741632582, 0.4034597308504893, -0.1913239032024691, -0.320364756552979, 0.0782286167336996, -0.25961255775304337, -0.23573832231205563, 0.2465826777611361, -0.07375232982557527, 0.025800570645261298, 0.06117140989869747, 0.0005742073719671299, -0.011021898948414209, -0.29327276918690565, 0.3316287250247199, 0.06477619372416547, 0.3125924321194721, 0.09620730121901562, 0.02857452905520277, 0.010176938680964413, -0.06126037408965965, -0.005403717840361128, -0.1532553037156271, 0.06858864552097742, 0.20925553996375826, 0.12942680257892367, 0.25129093053252544, -0.4401570826249067, -0.23844381731523331, 0.08820551119441557, 0.11012102934250305, 0.10167638338062653, -0.04254336745243352, -0.2908643068052655, 0.12361115428651574, -0.20745946404112633, -0.047102080208660906, -0.07054489371258506, 0.04712927473579035, 0.07878775746009291, -0.25543554058991547, 0.0774734549462622, 0.04265269675010512, 0.0867240359291954, -0.030056788499445417, -0.1216252608073139, 0.01969511322622989, 0.13451125907040265, 0.040195873436417506, -0.0022566269346794418, 0.1154716978510192, -0.13653274446585065, -0.1277648071206153, 0.3419965442356675, -0.0058889884155157, -0.14753270874796218, 0.1608550062925598, -0.06629111793780224, -0.12806071715732648, 0.06920453540704669, 0.20733426069450933, 0.10033167220738738, -0.14711270567982696, -0.0024133113369908792, -0.05781621280428141, 0.13054241374308287, 0.05559757152074125, 0.04737456367881752, 0.16150730448710018, 0.1812042619946391, 0.04473784716453317, 0.12896521962762184, -0.07115519537081466, -0.12032777577811896, -0.27047203983678375, -0.08444205802583764, -0.16752764959088634, 0.03619721238968385, -0.13101844442399155, -0.10278682294843156, 0.3994098222966111, 0.19552174080596413, 0.20444863881959124, 0.16000748945530072, 0.28835725836282555, 0.09833692650576013, -0.01620481048472399, 0.08506452913266109, 0.2575091948342878, 0.1409405176581945, 0.11397530103297254, -0.17243969403099008, 0.11255786123382318, -0.0006134303714430263] |
708.0151 | Nonisomorphic Verdier octahedra on the same base | We show by an example that in a Verdier triangulated category, there may
exist two mutually nonisomorphic Verdier octahedra containing the same
commutative triangle.
| math.KT | we show by an example that in a verdier triangulated category there may exist two mutually nonisomorphic verdier octahedra containing the same commutative triangle | [['we', 'show', 'by', 'an', 'example', 'that', 'in', 'a', 'verdier', 'triangulated', 'category', 'there', 'may', 'exist', 'two', 'mutually', 'nonisomorphic', 'verdier', 'octahedra', 'containing', 'the', 'same', 'commutative', 'triangle']] | [-0.2453696057976534, 0.10973653774090053, -0.0053162606588254375, 0.09728079211587708, -0.04082387725550992, -0.2142675772580939, -0.09621853940188885, 0.4704752955585718, -0.4152338003429274, -0.14152264141011983, 0.02218022072823563, -0.2952741168749829, -0.17849609806823233, 0.14665153358752528, -0.2502720374225949, -0.14528628531843424, 0.13138788606738672, 0.11958393326494843, 0.0011700676283605087, -0.264419730907927, 0.4076346914904813, -0.13901823522367826, 0.2314378488032768, 0.011530035369408628, 0.05839077119405071, -0.01655608731865262, 0.09919018026751776, 0.12341052441236873, -0.17725572749289617, 0.11061112605966628, 0.3943142939048509, 0.07624949235469103, 0.16013440078919908, -0.42957116570323706, 0.0032387638154129186, 0.22933670467076203, 0.14946345744344094, 0.07912443481230487, -0.11555606530358394, -0.27092487233070034, 0.06933930846086393, -0.24417237688127594, -0.08603649642706539, -0.09829420821430783, 0.04405462152014176, -0.05931826479112109, -0.26235295878723264, -0.043567971171190344, 0.13347650200982267, 0.1747275685193017, -0.08253881304214399, -0.0795758866200534, -0.14858396917892, 0.08813923009923504, -0.059658204670995474, -0.010668400927291563, 0.048053260182011094, -0.026383569561100256, -0.20784160494804382, 0.36351945778975886, 0.0077252226959293084, -0.2272827986162156, 0.179845968571802, -0.1450379394906728, -0.19005170154074827, 0.11574645499543597, -0.11364125227555633, 0.12012649700045586, -0.055459911624590554, 0.14748750052725276, -0.2537679033897196, 0.10114461020566523, 0.24162052695949873, 0.008070723056637993, 0.2158264673392599, 0.01877800716708104, 0.08561864250805229, 0.2012797769663545, 0.051327072539910056, -0.022541026584804058, -0.33959159596512717, -0.12066757686746617, -0.05747419217853652, 0.13294936751481146, -0.14925220255584767, -0.2299423221653948, 0.29579737305175513, 0.044223639750271104, 0.19034489539141455, 0.03845865066008022, 0.1809949822102984, -0.11826928611844778, 0.13456526941930255, 0.06297946053867538, 0.152957102128615, 0.16424427046634568, -0.13036636146716774, -0.043040396235786225, -0.06537339770390342, 0.24543194530997425] |
708.0152 | Non-standard neutrino interactions in reactor and superbeam experiments | The formalism of non-standard four-fermion interactions provides a
convenient, model-independent way of parameterizing a wide class of ``new
physics'' scenarios. In this article, we study the performance of reactor and
superbeam neutrino experiments in the presence of such non-standard
interactions (NSI). Due to interference between the standard and non-standard
amplitudes, sizeable effects are to be expected if the NSI parameters are close
to their current upper limits. We derive approximate formulas for the relevant
oscillation probabilities including NSI, and show how the leading effects can
be understood intuitively even without any calculations. We will present a
classification of all possible NSI according to their impact on reactor and
superbeam experiments, and it will turn out that these experiments are highly
complementary in terms of their sensitivity to the non-standard parameters. The
second part of the paper is devoted to detailed numerical simulations, which
will demonstrate how a standard oscillation fit of the mixing angle theta-13
may fail if experimental data is affected by NSI. We find that for some
non-standard terms, reactor and superbeam experiments would yield seemingly
conflicting results, while in other cases, they may agree well with each other,
but the resulting value for theta-13 could be far from the true value. This
offset may be so large that the true theta-13 is even ruled out erroneously. In
the last section of the paper, we demonstrate that reactor and superbeam data
can actually establish the presence of non-standard interactions. Throughout
our discussion, we pay special attention to the impact of the complex phases,
and of the near detectors.
| hep-ph hep-ex | the formalism of nonstandard fourfermion interactions provides a convenient modelindependent way of parameterizing a wide class of new physics scenarios in this article we study the performance of reactor and superbeam neutrino experiments in the presence of such nonstandard interactions nsi due to interference between the standard and nonstandard amplitudes sizeable effects are to be expected if the nsi parameters are close to their current upper limits we derive approximate formulas for the relevant oscillation probabilities including nsi and show how the leading effects can be understood intuitively even without any calculations we will present a classification of all possible nsi according to their impact on reactor and superbeam experiments and it will turn out that these experiments are highly complementary in terms of their sensitivity to the nonstandard parameters the second part of the paper is devoted to detailed numerical simulations which will demonstrate how a standard oscillation fit of the mixing angle theta13 may fail if experimental data is affected by nsi we find that for some nonstandard terms reactor and superbeam experiments would yield seemingly conflicting results while in other cases they may agree well with each other but the resulting value for theta13 could be far from the true value this offset may be so large that the true theta13 is even ruled out erroneously in the last section of the paper we demonstrate that reactor and superbeam data can actually establish the presence of nonstandard interactions throughout our discussion we pay special attention to the impact of the complex phases and of the near detectors | [['the', 'formalism', 'of', 'nonstandard', 'fourfermion', 'interactions', 'provides', 'a', 'convenient', 'modelindependent', 'way', 'of', 'parameterizing', 'a', 'wide', 'class', 'of', 'new', 'physics', 'scenarios', 'in', 'this', 'article', 'we', 'study', 'the', 'performance', 'of', 'reactor', 'and', 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708.0153 | The entropy of randomized network ensembles | Randomized network ensembles are the null models of real networks and are
extensivelly used to compare a real system to a null hypothesis. In this paper
we study network ensembles with the same degree distribution, the same
degree-correlations or the same community structure of any given real network.
We characterize these randomized network ensembles by their entropy, i.e. the
normalized logarithm of the total number of networks which are part of these
ensembles.
We estimate the entropy of randomized ensembles starting from a large set of
real directed and undirected networks. We propose entropy as an indicator to
assess the role of each structural feature in a given real network.We observe
that the ensembles with fixed scale-free degree distribution have smaller
entropy than the ensembles with homogeneous degree distribution indicating a
higher level of order in scale-free networks.
| cond-mat.dis-nn cond-mat.stat-mech | randomized network ensembles are the null models of real networks and are extensivelly used to compare a real system to a null hypothesis in this paper we study network ensembles with the same degree distribution the same degreecorrelations or the same community structure of any given real network we characterize these randomized network ensembles by their entropy ie the normalized logarithm of the total number of networks which are part of these ensembles we estimate the entropy of randomized ensembles starting from a large set of real directed and undirected networks we propose entropy as an indicator to assess the role of each structural feature in a given real networkwe observe that the ensembles with fixed scalefree degree distribution have smaller entropy than the ensembles with homogeneous degree distribution indicating a higher level of order in scalefree networks | [['randomized', 'network', 'ensembles', 'are', 'the', 'null', 'models', 'of', 'real', 'networks', 'and', 'are', 'extensivelly', 'used', 'to', 'compare', 'a', 'real', 'system', 'to', 'a', 'null', 'hypothesis', 'in', 'this', 'paper', 'we', 'study', 'network', 'ensembles', 'with', 'the', 'same', 'degree', 'distribution', 'the', 'same', 'degreecorrelations', 'or', 'the', 'same', 'community', 'structure', 'of', 'any', 'given', 'real', 'network', 'we', 'characterize', 'these', 'randomized', 'network', 'ensembles', 'by', 'their', 'entropy', 'ie', 'the', 'normalized', 'logarithm', 'of', 'the', 'total', 'number', 'of', 'networks', 'which', 'are', 'part', 'of', 'these', 'ensembles', 'we', 'estimate', 'the', 'entropy', 'of', 'randomized', 'ensembles', 'starting', 'from', 'a', 'large', 'set', 'of', 'real', 'directed', 'and', 'undirected', 'networks', 'we', 'propose', 'entropy', 'as', 'an', 'indicator', 'to', 'assess', 'the', 'role', 'of', 'each', 'structural', 'feature', 'in', 'a', 'given', 'real', 'networkwe', 'observe', 'that', 'the', 'ensembles', 'with', 'fixed', 'scalefree', 'degree', 'distribution', 'have', 'smaller', 'entropy', 'than', 'the', 'ensembles', 'with', 'homogeneous', 'degree', 'distribution', 'indicating', 'a', 'higher', 'level', 'of', 'order', 'in', 'scalefree', 'networks']] | [-0.1384043270300557, 0.10411616139902893, -0.05677607560013659, 0.06668426982470428, 0.038136706774184195, -0.11160603235475719, 0.029738518989808095, 0.3956438983335112, -0.24270205004616593, -0.2947337895658982, 0.054943868741699, -0.283167505174549, -0.20132911232526135, 0.11682939371535976, -0.022233692166925726, 0.09981777348358484, 0.0755501398714735, 0.09635924348560074, -0.04790367176382374, -0.2728343542213178, 0.37992735880080364, 0.08075305460238436, 0.3249457740279282, -0.006273782988806276, 0.07976633376725711, -0.026925997698108536, -0.016646244012526352, 0.061506903268070554, -0.07462359614268559, 0.15326546580551098, 0.18035669293183768, 0.17908420317201285, 0.2765867905368362, -0.3947493919055827, -0.2438114619496054, 0.22952665213196383, 0.095849549996048, 0.11428055087237, 0.05142666260120425, -0.26088691973229394, 0.12359832611315659, -0.15756078481954186, -0.11698412191272325, -0.0759088982081034, -0.014989973984006113, 0.07269485724280948, -0.2681411947416869, 0.05201957446869707, 0.02808437817288141, 0.10134853532089151, 0.0009100037239437556, -0.13260366425281866, -0.021723469642813513, 0.17446380488771646, -0.015945547124384528, 0.011699433580600065, 0.12166415678717903, -0.11939376554652423, -0.15372891369935152, 0.3489518142203345, -0.05597415854136823, -0.19445003097006766, 0.1778407993243776, -0.15578689300081264, -0.16016476134341345, 0.07005719450492766, 0.2436146497808016, 0.11755504306188247, -0.12912993163701458, 0.004584343953527184, -0.06495196002630693, 0.15865453478224223, 0.05457425325170812, 0.00808570510877745, 0.17055424981934092, 0.14867876688303955, 0.07279569878120547, 0.18250113700509724, -0.06936768976713184, -0.12324361227126453, -0.2688840945747538, -0.13020272397293445, -0.25141633287697596, 0.07751872130826007, -0.18411594455578215, -0.2059555446497933, 0.4013968981720888, 0.13501700704635194, 0.26836383818601167, 0.1411065474351406, 0.22889678887122167, 0.0912580275552281, 0.06628927935669403, 0.11455032255255827, 0.14514558405078348, 0.13527229484204664, 0.0755469936088924, -0.16140862299897538, 0.09385251406627795, 0.028454118899416424] |
708.0154 | Upper limit on the transition temperature for non-ideal Bose gases | In this paper we show that for a non-ideal Bose gas there exists an upper
limit on the transition temperature above which Bose-Einstein condensation
cannot occur regardless of the pressure applied. Such upper limits for some
realistic Bose gases are estimated. This result implies that there may also
exist an upper limit on the transition temperature of superconductors.
| cond-mat.stat-mech cond-mat.supr-con | in this paper we show that for a nonideal bose gas there exists an upper limit on the transition temperature above which boseeinstein condensation cannot occur regardless of the pressure applied such upper limits for some realistic bose gases are estimated this result implies that there may also exist an upper limit on the transition temperature of superconductors | [['in', 'this', 'paper', 'we', 'show', 'that', 'for', 'a', 'nonideal', 'bose', 'gas', 'there', 'exists', 'an', 'upper', 'limit', 'on', 'the', 'transition', 'temperature', 'above', 'which', 'boseeinstein', 'condensation', 'can', 'not', 'occur', 'regardless', 'of', 'the', 'pressure', 'applied', 'such', 'upper', 'limits', 'for', 'some', 'realistic', 'bose', 'gases', 'are', 'estimated', 'this', 'result', 'implies', 'that', 'there', 'may', 'also', 'exist', 'an', 'upper', 'limit', 'on', 'the', 'transition', 'temperature', 'of', 'superconductors']] | [-0.1637485730471642, 0.2416718744291032, -0.03879710366570596, 0.06645202281158734, 0.04110576935365039, -0.11831883431838477, 0.1159846890832187, 0.3443388736696314, -0.15307627552015296, -0.2433938639143766, 0.09186519935561376, -0.26440047775789843, -0.09699569518630535, 0.24538633480699637, -0.002749892306845572, -0.001530811987754147, -0.03069680863675677, 0.05786730170691923, -0.10721477761990943, -0.2506851323769759, 0.3616600584049346, -0.0008995321468781616, 0.29573402850557184, 0.18418140954069667, 0.053628213024871835, -0.1022984245397403, 0.14110121549643828, 0.012356157872383878, -0.25064252237360174, -0.03300173874249903, 0.26484866806511154, 0.033012455692356925, 0.181401925666605, -0.41087157635996907, -0.2503924054543535, 0.18003551262604484, 0.20246548716262994, 0.13393668035416217, -0.09667472877950108, -0.24280254575976376, -0.026712039114623252, -0.17245705681458368, -0.13712204696898647, -0.08541558742902036, 0.02067380583197889, -0.01159944876996895, -0.2683123488657934, 0.0946274374930338, 0.18095427081462437, 0.08202599312851631, -0.10089394080026423, -0.09664057589025568, 0.01463535922910955, 0.05772583109279305, -0.0005735150712021327, 0.021444976408729107, 0.1361650885161707, -0.16296005251391207, -0.0005603757513276601, 0.3727287797857139, -0.14290232151367907, -0.10566742604566833, 0.2537517235693285, -0.16268978991261604, -0.150514683157395, 0.16027391160506818, 0.1417118219680437, 0.03915596243499194, -0.11147188013261658, 0.07909934869888476, -0.1755162231560986, 0.19475561471940098, 0.1094574413925283, 0.039761268296989345, 0.2919807701008552, 0.1536324056481027, 0.0916618465966845, 0.1347283395638658, -0.07503103247796328, -0.06992654885181178, -0.3181362995262242, -0.14563064046709215, -0.227067028519587, 0.07184461746152719, -0.06568316285009101, -0.20598695850220777, 0.22184460071878412, 0.2563840504163497, 0.20948312513656536, 0.004224975595361222, 0.24079860520146598, 0.24265269321089578, -0.008220028668894605, 0.11805644138889798, 0.2901226805500347, 0.1247903098178617, 0.051221741442331825, -0.20280548526759465, 0.04634761907381274, 0.043617289402853636] |
708.0155 | Is D_s(2700) a charmed tetraquark state ? | In this article, we take the point of view that the $D_s(2700)$ be a
tetraquark state, which consists of a scalar diquark and a vector antidiquark,
and calculate its mass with the QCD sum rules. The numerical result indicates
that the mass of the vector charmed tetraquark state is about
$M_V=(3.75\pm0.18)\rm{GeV}$ or $M_V=(3.71\pm0.15)\rm{GeV}$ from different sum
rules, which is about $1\rm{GeV}$ larger than the experimental data. Such
tetraquark component should be very small in the $D_s(2700)$.
| hep-ph | in this article we take the point of view that the d_s2700 be a tetraquark state which consists of a scalar diquark and a vector antidiquark and calculate its mass with the qcd sum rules the numerical result indicates that the mass of the vector charmed tetraquark state is about m_v375pm018rmgev or m_v371pm015rmgev from different sum rules which is about 1rmgev larger than the experimental data such tetraquark component should be very small in the d_s2700 | [['in', 'this', 'article', 'we', 'take', 'the', 'point', 'of', 'view', 'that', 'the', 'd_s2700', 'be', 'a', 'tetraquark', 'state', 'which', 'consists', 'of', 'a', 'scalar', 'diquark', 'and', 'a', 'vector', 'antidiquark', 'and', 'calculate', 'its', 'mass', 'with', 'the', 'qcd', 'sum', 'rules', 'the', 'numerical', 'result', 'indicates', 'that', 'the', 'mass', 'of', 'the', 'vector', 'charmed', 'tetraquark', 'state', 'is', 'about', 'm_v375pm018rmgev', 'or', 'm_v371pm015rmgev', 'from', 'different', 'sum', 'rules', 'which', 'is', 'about', '1rmgev', 'larger', 'than', 'the', 'experimental', 'data', 'such', 'tetraquark', 'component', 'should', 'be', 'very', 'small', 'in', 'the', 'd_s2700']] | [-0.10129416121506235, 0.1937633309894914, -0.10630552293797438, 0.09565754520170028, -0.10759943674525453, -0.09544209910220364, 0.10586666925680926, 0.32409246935923064, -0.18604979058727622, -0.217460746909233, 0.0479852074802491, -0.28642839445253937, -0.05538267956904343, 0.07958987986138608, 0.0675216557445108, 0.03366470993933035, 0.09880187971510976, 0.09121300475413187, -0.06618274115155348, -0.2085927493834687, 0.4016029533619682, -0.05723332375701931, 0.1966456894588191, 0.13590550406499663, 0.05387538489271214, -0.01243111942636056, 0.011833545551376624, -0.02982982107075966, -0.039889778121505515, 0.09085811200525819, 0.21215100054460992, 0.14731266546166605, 0.20871931442525238, -0.3431901923742973, -0.15947509600987864, 0.13441488523838213, 0.1621307685434456, 0.12493228256870578, 0.03260867893954532, -0.29626073157285443, 0.18310380968937856, -0.2065902304214736, -0.15661519390737844, -0.10047034797672597, -0.01298884856643983, -0.027955529383487172, -0.32823106764246607, 0.08618131959034751, -0.006849884010282242, 0.02549466784370856, -0.08115570255096019, -0.2515042811412261, -0.04549497181950654, 0.04235074979240178, 0.08706622273247275, 0.12791733463139585, 0.11732542360227348, -0.17520227835242017, -0.12847476518719406, 0.4177046461651723, -0.05247127890248117, -0.2047115886558054, 0.0990207415597979, -0.1066175427986309, -0.09794472443172708, 0.09850982369648086, 0.1413468274630658, 0.10670169691244762, -0.14438128287697005, 0.007332816679586863, -0.11601556928103997, 0.190499044284176, 0.04077194643064609, 0.07040074810437444, 0.2936008089842896, 0.1783980006390872, 0.01082874511484988, 0.10805091194278146, -0.049391487535710134, -0.13652959685229385, -0.3676073507974959, -0.16404271591454744, -0.17741349511521143, 0.10315892988324372, -0.08977584871293705, -0.1298707749358275, 0.39635861644314396, 0.08863024682634407, 0.2628699420222094, 0.012770334378324656, 0.30402209842577577, 0.10526546953769866, 0.10056792609652297, 0.08077334081624737, 0.2752491953692192, 0.16516357496018624, 0.1121359122205629, -0.219081116361647, 0.004874655815203571, 0.0260064535218084] |
708.0156 | Nucleosome Chiral Transition under Positive Torsional Stress in Single
Chromatin Fibers | Using magnetic tweezers to investigate the mechanical response of single
chromatin fibers, we show that fibers submitted to large positive torsion
transiently trap positive turns, at a rate of one turn per nucleosome. A
comparison with the response of fibers of tetrasomes (the (H3-H4)2 tetramer
bound with ~50 bp of DNA) obtained by depletion of H2A-H2B dimers, suggests
that the trapping reflects a nucleosome chiral transition to a metastable form
built on the previously documented righthanded tetrasome. In view of its low
energy, <8 kT, we propose this transition is physiologically relevant and
serves to break the docking of the dimers on the tetramer which in the absence
of other factors exerts a strong block against elongation of transcription by
the main RNA polymerase.
| q-bio.BM | using magnetic tweezers to investigate the mechanical response of single chromatin fibers we show that fibers submitted to large positive torsion transiently trap positive turns at a rate of one turn per nucleosome a comparison with the response of fibers of tetrasomes the h3h42 tetramer bound with 50 bp of dna obtained by depletion of h2ah2b dimers suggests that the trapping reflects a nucleosome chiral transition to a metastable form built on the previously documented righthanded tetrasome in view of its low energy 8 kt we propose this transition is physiologically relevant and serves to break the docking of the dimers on the tetramer which in the absence of other factors exerts a strong block against elongation of transcription by the main rna polymerase | [['using', 'magnetic', 'tweezers', 'to', 'investigate', 'the', 'mechanical', 'response', 'of', 'single', 'chromatin', 'fibers', 'we', 'show', 'that', 'fibers', 'submitted', 'to', 'large', 'positive', 'torsion', 'transiently', 'trap', 'positive', 'turns', 'at', 'a', 'rate', 'of', 'one', 'turn', 'per', 'nucleosome', 'a', 'comparison', 'with', 'the', 'response', 'of', 'fibers', 'of', 'tetrasomes', 'the', 'h3h42', 'tetramer', 'bound', 'with', '50', 'bp', 'of', 'dna', 'obtained', 'by', 'depletion', 'of', 'h2ah2b', 'dimers', 'suggests', 'that', 'the', 'trapping', 'reflects', 'a', 'nucleosome', 'chiral', 'transition', 'to', 'a', 'metastable', 'form', 'built', 'on', 'the', 'previously', 'documented', 'righthanded', 'tetrasome', 'in', 'view', 'of', 'its', 'low', 'energy', '8', 'kt', 'we', 'propose', 'this', 'transition', 'is', 'physiologically', 'relevant', 'and', 'serves', 'to', 'break', 'the', 'docking', 'of', 'the', 'dimers', 'on', 'the', 'tetramer', 'which', 'in', 'the', 'absence', 'of', 'other', 'factors', 'exerts', 'a', 'strong', 'block', 'against', 'elongation', 'of', 'transcription', 'by', 'the', 'main', 'rna', 'polymerase']] | [-0.1643205137612919, 0.18052884717665924, -0.006660434196237475, 0.008638138106713692, 0.007576920053300758, -0.17302204711983601, 0.07092767322901636, 0.367746133202066, -0.23988526413061967, -0.2597249512776519, -0.01171188877779059, -0.26218529054070433, -0.14811469182216871, 0.15332252143416553, 0.0037976115786780913, -0.001955994125940682, 0.046966913550083214, 0.05581961690816873, 0.00819795640418306, -0.19918945272802374, 0.24832465113916743, 0.10962675453629345, 0.28226525082912607, 0.08368641060466568, 0.11114538406060698, -0.015416916218722083, 0.06612680247829607, -0.03998738465209802, -0.1821633346540087, 0.16225915070002278, 0.20790850992586155, 0.040411000574628514, 0.24261946411958585, -0.4540798749309033, -0.1968987395657071, 0.0717225400886188, 0.1375721174272864, 0.16535740734058588, -0.03848942622425966, -0.25080558243983736, 0.06644340856873895, -0.13677185554600632, -0.11814447776511466, -0.06582951385450239, -0.0004558795074141623, 0.07653127885811652, -0.21024333114231317, 0.08738845505722566, 0.05485004971657569, 0.08805052557339271, -0.07346944718168137, -0.09479024917818606, -0.05273915572324768, 0.11681138755520806, 0.07675778444196718, 0.05205687318036022, 0.2658107193924176, -0.12142366383729192, -0.08545289414081102, 0.3887772195506841, -0.08576185375762482, -0.13391926809369276, 0.16852968326614548, -0.14841748062365998, -0.1224904778180644, 0.21802549105680857, 0.11125848104032533, 0.0652925060557512, -0.11678752572430919, -0.004537331481939569, -0.015162724968589222, 0.22080233500552518, 0.13592988846357912, -0.029483112207769106, 0.23929475899785757, 0.20623107550200076, 0.029987040115520357, 0.19794236593928266, -0.1154320235082802, -0.09925248143651212, -0.2577830008851985, -0.152818977740147, -0.15796289644980183, 0.059015166386961936, -0.06363526787208684, -0.18093523857338975, 0.38977829476546805, 0.04348550491910525, 0.2139418445682774, 0.032289668192970564, 0.2187422350475875, 0.014135173324029892, 0.13994142116668323, -0.035691905130321784, 0.24812163453316316, 0.12383444076015925, 0.06183157149159039, -0.29816696538667503, 0.06877528389450163, 0.04591427156701684] |
708.0157 | Matrix Factorizations, D-Branes and their Deformations | We review in elementary, non-technical terms the description of topological
B-type of D-branes in terms of boundary Landau-Ginzburg theory, as well as some
applications.
| hep-th | we review in elementary nontechnical terms the description of topological btype of dbranes in terms of boundary landauginzburg theory as well as some applications | [['we', 'review', 'in', 'elementary', 'nontechnical', 'terms', 'the', 'description', 'of', 'topological', 'btype', 'of', 'dbranes', 'in', 'terms', 'of', 'boundary', 'landauginzburg', 'theory', 'as', 'well', 'as', 'some', 'applications']] | [-0.1152871471325246, 0.1277385134017095, -0.03242309676716104, 0.13362025547151765, -0.09730737470090389, -0.07865170730898778, -0.02388494025702433, 0.2576174885810663, -0.18611991547125703, -0.3063449851082017, 0.0981131343190403, -0.21945935813710093, -0.2450552780671084, 0.15906246120963866, -0.2275640394849082, 0.009090568559865156, -0.011227205706139406, 0.0652657002210617, -0.11808162617186706, -0.25338394986465573, 0.30643706444728497, -0.05927064564699928, 0.2080556790654858, 0.1293272622860968, -0.0008346689864993095, -0.00224139989586547, -0.02255916956346482, 0.022332500743990142, -0.15587853478306593, 0.15483228449011222, 0.375189751231422, 0.057802146300673485, 0.12850301095750183, -0.49484201427549124, -0.2289362441127499, -0.005261830364664395, 0.21001497438798347, 0.13339100778102875, -0.017088525055442005, -0.2713084804515044, 0.07759017396407823, -0.23580753291025758, -0.18958778462062278, -0.1266874789725989, 0.01711524394340813, 0.068658247590065, -0.10782721434952691, 0.015969040997636814, 0.07649991914028458, 0.20575826331817856, -0.10779880126938224, -0.12457490619271994, -0.027253570782098297, 0.07116198510630056, 0.10756072444686045, 0.024909201136324555, 0.1141167171493483, -0.2778976876482678, -0.15538440318778157, 0.4363737792397539, -0.11980598066778232, -0.15776796212109426, 0.21341357384032258, -0.047909187929083906, -0.1534749495719249, 0.005970655241981149, 0.11634520161896944, 0.18143811675448282, -0.1324160024523735, 0.20716424437705427, 0.0017519039150405054, -0.005562086900075276, 0.10294201803238441, 0.22098292813946804, 0.2723569408990443, 0.17052120746423802, -0.005332805681973696, 0.1671913917719697, 0.07468219707758787, -0.14755842105175057, -0.5733955887456735, -0.1875159281383579, -0.12706509123866758, 0.1418138008642321, -0.06672714743763208, -0.2775429980829358, 0.4597685061550389, 0.09014110236118238, 0.23477510428832224, -0.03138229999846468, 0.24182676430791616, 0.06878507640794851, -0.06698324414901435, -0.05148156753663594, 0.11287511389067124, 0.22328715802480778, 0.0894139395095408, -0.14258821906211475, -0.049393286365860455, 0.21967104488673309] |
708.0158 | A Compton Thick AGN Powering the Hyperluminous Infrared Galaxy IRAS
00182--7112 | We present X-ray observations of the Hyperluminous Infrared Galaxy (HLIRG)
IRAS 00182--7112 (F00183--7111) obtained using the XMM-Newton EPIC camera. A
luminous hard X-ray source co-incident with the nucleus is revealed, along with
weaker soft X-ray emission which may be extended or offset from the hard. The
EPIC spectrum is extremely flat and shows Fe K$\alpha$ emission with very high
equivalent width: both are typical characteristics of a buried, Compton--thick
AGN which is seen only in scattered light. Perhaps the most remarkable
characteristic of the spectrum is that the Fe K$\alpha$ line energy is that of
He-like iron, making IRAS 00182--7112 the first hidden AGN known to be
dominated by ionized, Compton thick reflection. Taking an appropriate
bolometric correction we find that this AGN could easily dominate the FIR
energetics. The nuclear reflection spectrum is seen through a relatively cold
absorber with column density consistent with recent Spitzer observations. The
soft X-ray emission, which may be thermal in nature and associated with
star-forming activity, is seen unabsorbed. The soft X-rays and weak PAH
features both give estimates of the star formation rate $\sim 300 M_{\odot}$
yr$^{-1}$, insufficient to power the FIR emission and supportive of the idea
that this HLIRG is AGN-dominated.
| astro-ph | we present xray observations of the hyperluminous infrared galaxy hlirg iras 001827112 f001837111 obtained using the xmmnewton epic camera a luminous hard xray source coincident with the nucleus is revealed along with weaker soft xray emission which may be extended or offset from the hard the epic spectrum is extremely flat and shows fe kalpha emission with very high equivalent width both are typical characteristics of a buried comptonthick agn which is seen only in scattered light perhaps the most remarkable characteristic of the spectrum is that the fe kalpha line energy is that of helike iron making iras 001827112 the first hidden agn known to be dominated by ionized compton thick reflection taking an appropriate bolometric correction we find that this agn could easily dominate the fir energetics the nuclear reflection spectrum is seen through a relatively cold absorber with column density consistent with recent spitzer observations the soft xray emission which may be thermal in nature and associated with starforming activity is seen unabsorbed the soft xrays and weak pah features both give estimates of the star formation rate sim 300 m_odot yr1 insufficient to power the fir emission and supportive of the idea that this hlirg is agndominated | [['we', 'present', 'xray', 'observations', 'of', 'the', 'hyperluminous', 'infrared', 'galaxy', 'hlirg', 'iras', '001827112', 'f001837111', 'obtained', 'using', 'the', 'xmmnewton', 'epic', 'camera', 'a', 'luminous', 'hard', 'xray', 'source', 'coincident', 'with', 'the', 'nucleus', 'is', 'revealed', 'along', 'with', 'weaker', 'soft', 'xray', 'emission', 'which', 'may', 'be', 'extended', 'or', 'offset', 'from', 'the', 'hard', 'the', 'epic', 'spectrum', 'is', 'extremely', 'flat', 'and', 'shows', 'fe', 'kalpha', 'emission', 'with', 'very', 'high', 'equivalent', 'width', 'both', 'are', 'typical', 'characteristics', 'of', 'a', 'buried', 'comptonthick', 'agn', 'which', 'is', 'seen', 'only', 'in', 'scattered', 'light', 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'yr1', 'insufficient', 'to', 'power', 'the', 'fir', 'emission', 'and', 'supportive', 'of', 'the', 'idea', 'that', 'this', 'hlirg', 'is', 'agndominated']] | [-0.022085506871492418, 0.1037932289279465, -0.04752490027625132, 0.125895398358894, -0.11810293300872922, -0.1224610130302608, -0.007439474017129996, 0.5328636079764546, -0.16604621215412235, -0.29678044613186344, 0.06464350388160715, -0.3387374780491818, 0.005970547217922519, 0.16786921993712237, -0.021852305938194896, -0.06833272064326977, -0.015912971389421434, -0.14850077888315272, -0.0020240208896897247, -0.2012427574650726, 0.27202929241872914, 0.12970740838449019, 0.17029669162485017, 0.018125298476917493, 0.04355266892664771, -0.08334774738669058, -0.07627051666229215, -0.01122485020258768, -0.044571331424443236, 0.0866845598229062, 0.29232724217683936, 0.08334526216059025, 0.1564815266835316, -0.3262997989363772, -0.23180561950933376, 0.05049737260136379, 0.18375292405177227, -0.049578759079242134, -0.05180433007593655, 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708.0159 | Possible Way to Synthesize Superheavy Element Z=117 | Within the framework of the dinuclear system model, the production of
superheavy element Z=117 in possible projectile-target combinations is analyzed
systematically. The calculated results show that the production cross sections
are strongly dependent on the reaction systems. Optimal combinations,
corresponding excitation energies and evaporation channels are proposed in this
letter, such as the isotopes ^{248,249}Bk in ^{48}Ca induced reactions in 3n
evaporation channels and the reactions ^{45}Sc+^{246,248}Cm in 3n and 4n
channels, and the system ^{51}V+^{244}Pu in 3n channel.
| nucl-th | within the framework of the dinuclear system model the production of superheavy element z117 in possible projectiletarget combinations is analyzed systematically the calculated results show that the production cross sections are strongly dependent on the reaction systems optimal combinations corresponding excitation energies and evaporation channels are proposed in this letter such as the isotopes 248249bk in 48ca induced reactions in 3n evaporation channels and the reactions 45sc246248cm in 3n and 4n channels and the system 51v244pu in 3n channel | [['within', 'the', 'framework', 'of', 'the', 'dinuclear', 'system', 'model', 'the', 'production', 'of', 'superheavy', 'element', 'z117', 'in', 'possible', 'projectiletarget', 'combinations', 'is', 'analyzed', 'systematically', 'the', 'calculated', 'results', 'show', 'that', 'the', 'production', 'cross', 'sections', 'are', 'strongly', 'dependent', 'on', 'the', 'reaction', 'systems', 'optimal', 'combinations', 'corresponding', 'excitation', 'energies', 'and', 'evaporation', 'channels', 'are', 'proposed', 'in', 'this', 'letter', 'such', 'as', 'the', 'isotopes', '248249bk', 'in', '48ca', 'induced', 'reactions', 'in', '3n', 'evaporation', 'channels', 'and', 'the', 'reactions', '45sc246248cm', 'in', '3n', 'and', '4n', 'channels', 'and', 'the', 'system', '51v244pu', 'in', '3n', 'channel']] | [-0.08333488891060513, 0.20542200036365293, -0.020103993326636937, 0.07899001059367468, 0.1406005388615947, -0.12136115418060829, 0.024972356353445274, 0.345361738147116, -0.229944888532995, -0.24345168353695618, -0.04806007871612612, -0.33856194615854246, -0.06528381220261126, 0.12074858099405997, 0.08879377754515429, 0.08356069557760891, 0.08704756077464768, 0.051547045372181424, -0.021512419503874537, -0.20255545427483557, 0.32351264873470525, 0.09282316162103885, 0.20327334430093238, 0.14693618502075734, 0.029239761030399485, 0.030987418085140616, 0.005008285333659794, -0.08669351535775748, -0.1320479120604432, 0.08120290812497076, 0.2861693904637114, 0.07907270272507479, 0.07556058444376838, -0.4303581774675925, -0.1883616378334792, 0.0657694099569007, 0.16150531722967953, 0.15118564535422543, -0.05888866169506831, -0.2584013754354888, 0.056792621519171485, -0.2537849402349246, -0.07645371009742744, -0.030908842448537286, 0.07701679218045779, 0.06514896266162395, -0.32184369352303055, 0.02152300205718922, -0.00019220811756033647, 0.013143022109656349, -0.12093987564041622, -0.23745480935567206, -0.05196365620940924, 0.05179342598038554, 0.03899213841252372, -0.06022299461543107, 0.21629597714759016, -0.06529294040458473, -0.10044321812395203, 0.40634084860549163, -0.024400010622278052, -0.19539616127057294, 0.13142479215763925, -0.13916311514759927, -0.12783399412230784, 0.2130618546844313, 0.22283237868013153, 0.17771303799542548, -0.2069490548027189, 0.08152172830580783, 0.031202167542161124, 0.15861668695364833, 0.09888705292924944, 0.06188684905033657, 0.09087492469208021, 0.21151438825242957, -0.04793533386270467, 0.05146272909692734, -0.10815903949735098, -0.14736918554913964, -0.37171412872052506, -0.11438016475815523, -0.08286760759686954, -0.023890546869216978, -0.023057402362036027, -0.050067982526486865, 0.3312352877110243, 0.06274892553981197, 0.1932760087381068, -0.04469918521231433, 0.2673805169025926, 0.07923204743297231, 0.08144544014143512, 0.033661078182232906, 0.2944991265325562, 0.20108513938459127, 0.03818472752372097, -0.2998850252540586, 0.08842248760016733, 0.020794429166830684] |
708.016 | Colliding neutrino beams | From several neutrino oscillation experiments, we understand now that
neutrinos have mass. However, we really don't know what mechanism is
responsible for producing this neutrino mass. Current or planned neutrino
experiments utilize neutrino beams and long-baseline detectors to explore
flavor mixing but do not address the question of the origin of neutrino mass.
In order to answer that question, neutrino interactions need to be explored at
much higher energies. This paper outlines a program to explore neutrinos and
their interactions with various particles through a series of experiments
involving colliding neutrino beams.
| hep-ex | from several neutrino oscillation experiments we understand now that neutrinos have mass however we really dont know what mechanism is responsible for producing this neutrino mass current or planned neutrino experiments utilize neutrino beams and longbaseline detectors to explore flavor mixing but do not address the question of the origin of neutrino mass in order to answer that question neutrino interactions need to be explored at much higher energies this paper outlines a program to explore neutrinos and their interactions with various particles through a series of experiments involving colliding neutrino beams | [['from', 'several', 'neutrino', 'oscillation', 'experiments', 'we', 'understand', 'now', 'that', 'neutrinos', 'have', 'mass', 'however', 'we', 'really', 'dont', 'know', 'what', 'mechanism', 'is', 'responsible', 'for', 'producing', 'this', 'neutrino', 'mass', 'current', 'or', 'planned', 'neutrino', 'experiments', 'utilize', 'neutrino', 'beams', 'and', 'longbaseline', 'detectors', 'to', 'explore', 'flavor', 'mixing', 'but', 'do', 'not', 'address', 'the', 'question', 'of', 'the', 'origin', 'of', 'neutrino', 'mass', 'in', 'order', 'to', 'answer', 'that', 'question', 'neutrino', 'interactions', 'need', 'to', 'be', 'explored', 'at', 'much', 'higher', 'energies', 'this', 'paper', 'outlines', 'a', 'program', 'to', 'explore', 'neutrinos', 'and', 'their', 'interactions', 'with', 'various', 'particles', 'through', 'a', 'series', 'of', 'experiments', 'involving', 'colliding', 'neutrino', 'beams']] | [-0.06600102040987543, 0.28954444834760024, -0.0020576235952118977, 0.25373617320134223, -0.1119577901073448, -0.14663781398785827, 0.04760917456461238, 0.39077325317117834, -0.22658146930473816, -0.3472301755910334, 0.048647834525858656, -0.2965948286810485, -0.05679351884021383, 0.1924175281247185, 0.04880516682549015, 0.011963512707987557, 0.10161199001595378, -0.026606398999043133, -0.08802819567347836, -0.24279912118799984, 0.341418781464555, 0.15467505596841322, 0.20126329007072616, 0.11898910198056989, 0.11282639733373957, -0.10004264369364017, -0.0920715001411736, -0.11900172986940522, -0.09990872564784418, 0.010996538740785225, 0.2616221771686864, 0.17475165478105698, 0.16458268172067145, -0.47266847107802396, -0.19787349060441004, 0.22694945387015847, 0.1968254714865116, 0.09319399846920176, -0.12364285480251293, -0.2617213528846269, 0.013236936025192414, -0.2054323129743115, -0.15489301555182622, -0.07991623749915996, -0.07607302789920536, -0.03771914903747687, -0.25318840614762966, 0.006784368804959661, -0.013070081294838177, -0.02846985887837313, 0.0031643566478084285, -0.13388969635833864, 0.060950104237038075, 0.08239278150469308, 0.1767850591470901, -0.02463509313478742, 0.09072511208638467, -0.18279892775108633, -0.11580199988194458, 0.45624570171956136, -0.004000589882944832, -0.14820025201239015, 0.17476035544203353, -0.23999346030430627, -0.11963294191873106, 0.09899917078386668, 0.21294686222403392, 0.04645567820103758, -0.2115684476296377, 0.026346360240890848, -0.09567881483868089, 0.17287936032896498, 0.10589156399541737, 0.018074971767972507, 0.3420408132293707, 0.23451752010125504, 0.09261927278408699, -0.09316392019441676, -0.10051121676097745, 0.02767013244168914, -0.2899846186375488, -0.08964798103451081, -0.10299125671356349, 0.08958684991423228, 0.07732575921292427, -0.07183287908201633, 0.4186811001525949, 0.2424446283535951, 0.1863454215167819, -0.014741894120917372, 0.2857933737256605, 0.010940369380557018, 0.07355643542351849, 0.009028854521760799, 0.30912694164916227, 0.09902680912573883, 0.17710948614504837, -0.25018043786479643, 0.019976181701918984, 0.0629024516750613] |
708.0161 | Entanglement entropy in quantum spin chains with finite range
interaction | We study the entropy of entanglement of the ground state in a wide family of
one-dimensional quantum spin chains whose interaction is of finite range and
translation invariant. Such systems can be thought of as generalizations of the
XY model. The chain is divided in two parts: one containing the first
consecutive L spins; the second the remaining ones. In this setting the entropy
of entanglement is the von Neumann entropy of either part. At the core of our
computation is the explicit evaluation of the leading order term as L tends to
infinity of the determinant of a block-Toeplitz matrix whose symbol belongs to
a general class of 2 x 2 matrix functions. The asymptotics of such determinant
is computed in terms of multi-dimensional theta-functions associated to a
hyperelliptic curve of genus g >= 1, which enter into the solution of a
Riemann-Hilbert problem. Phase transitions for thes systems are characterized
by the branch points of the hyperelliptic curve approaching the unit circle. In
these circumstances the entropy diverges logarithmically. We also recover, as
particular cases, the formulae for the entropy discovered by Jin and Korepin
(2004) for the XX model and Its, Jin and Korepin (2005,2006) for the XY model.
| math-ph math.MP quant-ph | we study the entropy of entanglement of the ground state in a wide family of onedimensional quantum spin chains whose interaction is of finite range and translation invariant such systems can be thought of as generalizations of the xy model the chain is divided in two parts one containing the first consecutive l spins the second the remaining ones in this setting the entropy of entanglement is the von neumann entropy of either part at the core of our computation is the explicit evaluation of the leading order term as l tends to infinity of the determinant of a blocktoeplitz matrix whose symbol belongs to a general class of 2 x 2 matrix functions the asymptotics of such determinant is computed in terms of multidimensional thetafunctions associated to a hyperelliptic curve of genus g 1 which enter into the solution of a riemannhilbert problem phase transitions for thes systems are characterized by the branch points of the hyperelliptic curve approaching the unit circle in these circumstances the entropy diverges logarithmically we also recover as particular cases the formulae for the entropy discovered by jin and korepin 2004 for the xx model and its jin and korepin 20052006 for the xy model | [['we', 'study', 'the', 'entropy', 'of', 'entanglement', 'of', 'the', 'ground', 'state', 'in', 'a', 'wide', 'family', 'of', 'onedimensional', 'quantum', 'spin', 'chains', 'whose', 'interaction', 'is', 'of', 'finite', 'range', 'and', 'translation', 'invariant', 'such', 'systems', 'can', 'be', 'thought', 'of', 'as', 'generalizations', 'of', 'the', 'xy', 'model', 'the', 'chain', 'is', 'divided', 'in', 'two', 'parts', 'one', 'containing', 'the', 'first', 'consecutive', 'l', 'spins', 'the', 'second', 'the', 'remaining', 'ones', 'in', 'this', 'setting', 'the', 'entropy', 'of', 'entanglement', 'is', 'the', 'von', 'neumann', 'entropy', 'of', 'either', 'part', 'at', 'the', 'core', 'of', 'our', 'computation', 'is', 'the', 'explicit', 'evaluation', 'of', 'the', 'leading', 'order', 'term', 'as', 'l', 'tends', 'to', 'infinity', 'of', 'the', 'determinant', 'of', 'a', 'blocktoeplitz', 'matrix', 'whose', 'symbol', 'belongs', 'to', 'a', 'general', 'class', 'of', '2', 'x', '2', 'matrix', 'functions', 'the', 'asymptotics', 'of', 'such', 'determinant', 'is', 'computed', 'in', 'terms', 'of', 'multidimensional', 'thetafunctions', 'associated', 'to', 'a', 'hyperelliptic', 'curve', 'of', 'genus', 'g', '1', 'which', 'enter', 'into', 'the', 'solution', 'of', 'a', 'riemannhilbert', 'problem', 'phase', 'transitions', 'for', 'thes', 'systems', 'are', 'characterized', 'by', 'the', 'branch', 'points', 'of', 'the', 'hyperelliptic', 'curve', 'approaching', 'the', 'unit', 'circle', 'in', 'these', 'circumstances', 'the', 'entropy', 'diverges', 'logarithmically', 'we', 'also', 'recover', 'as', 'particular', 'cases', 'the', 'formulae', 'for', 'the', 'entropy', 'discovered', 'by', 'jin', 'and', 'korepin', '2004', 'for', 'the', 'xx', 'model', 'and', 'its', 'jin', 'and', 'korepin', '20052006', 'for', 'the', 'xy', 'model']] | [-0.16439919582387405, 0.12095044555846371, -0.047849533838493316, 0.05215480804804768, 0.0016737304971349513, -0.1540483250305872, 0.021939348048340548, 0.28569969533831435, -0.28572126217875676, -0.23236369390726386, 0.13022641590576323, -0.3266693391809379, -0.10882996057452106, 0.18222335097843326, -0.03791057310789356, 0.05994624432740474, 0.029329910452723207, 0.09807128086454463, -0.11358840197912042, -0.24369923990053027, 0.34103895854939004, -0.024272356128473, 0.2125047793813439, 0.030620451574097967, 0.0923208906769924, 0.00908842041801235, 0.024632409407261444, -0.017254115182458465, -0.1316744004079692, 0.10306635204950505, 0.2462559720291061, 0.0834986260786319, 0.22149757721660593, -0.3525162949342633, -0.19091559942598588, 0.15352152361631838, 0.13627542710784285, 0.06310967864139719, 0.04964982714406701, -0.252225027801886, 0.05261062059094793, -0.19044242790826035, -0.15796588673094167, 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0.07272328240669504, 0.19824589420352084, 0.14957459296553918, 0.04707294481167042, 0.06171611869251309, 0.16387229924789856, 0.1554615952825146, 0.05728934208052499, -0.2280990126768917, 0.03797939079188144, 0.15799515207752177] |
708.0162 | Implication of the proton electric FF space-like behavior puzzle in
various physical phenomena | By means of the 10-resonance unitary and analytic model of nucleon
electromagnetic structure it is demonstrated that the JLab proton polarization
data on the ratio $\mu_p G_{Ep}(Q^2)/G_{Mp}(Q^2)$ are consistent with all form
factor properties, however, they strongly require an existence of the zero in
G_{Ep}(Q^2) around Q^2=13 GeV^2. As a result there are two contradicting
behaviors of G_{Ep}(Q^2) in space-like region. Consequences of this phenomenon
on the charge distribution within the proton, on the saturation of the new
proton-neutron q^2-dependent sum rule, on the behavior of strange nucleon form
factors and the deuteron elastic structure functions through the impulse
approximation are investigated.
| hep-ph | by means of the 10resonance unitary and analytic model of nucleon electromagnetic structure it is demonstrated that the jlab proton polarization data on the ratio mu_p g_epq2g_mpq2 are consistent with all form factor properties however they strongly require an existence of the zero in g_epq2 around q213 gev2 as a result there are two contradicting behaviors of g_epq2 in spacelike region consequences of this phenomenon on the charge distribution within the proton on the saturation of the new protonneutron q2dependent sum rule on the behavior of strange nucleon form factors and the deuteron elastic structure functions through the impulse approximation are investigated | [['by', 'means', 'of', 'the', '10resonance', 'unitary', 'and', 'analytic', 'model', 'of', 'nucleon', 'electromagnetic', 'structure', 'it', 'is', 'demonstrated', 'that', 'the', 'jlab', 'proton', 'polarization', 'data', 'on', 'the', 'ratio', 'mu_p', 'g_epq2g_mpq2', 'are', 'consistent', 'with', 'all', 'form', 'factor', 'properties', 'however', 'they', 'strongly', 'require', 'an', 'existence', 'of', 'the', 'zero', 'in', 'g_epq2', 'around', 'q213', 'gev2', 'as', 'a', 'result', 'there', 'are', 'two', 'contradicting', 'behaviors', 'of', 'g_epq2', 'in', 'spacelike', 'region', 'consequences', 'of', 'this', 'phenomenon', 'on', 'the', 'charge', 'distribution', 'within', 'the', 'proton', 'on', 'the', 'saturation', 'of', 'the', 'new', 'protonneutron', 'q2dependent', 'sum', 'rule', 'on', 'the', 'behavior', 'of', 'strange', 'nucleon', 'form', 'factors', 'and', 'the', 'deuteron', 'elastic', 'structure', 'functions', 'through', 'the', 'impulse', 'approximation', 'are', 'investigated']] | [-0.11625684825801474, 0.18145411009891627, -0.09799038854630499, 0.09976390925798528, -0.033951994797012004, -0.027611617352767376, 0.05765006496653993, 0.35675544533325304, -0.1926649374758253, -0.22372582699587146, -0.005597987721701807, -0.3026302784570668, -0.09450147673948714, 0.16480790408694712, 0.06646542595947244, 0.06576268371692535, 0.010019743312519081, 0.050526385877908454, -0.07201983119559355, -0.16184545745888707, 0.38033263569139864, 0.052793536961394466, 0.27877697130978696, 0.12775911490829422, 0.08283631223378389, 0.043349166631256, 0.018903013544691965, -0.022832270296714682, -0.09765297110864747, 0.06253292036270446, 0.21604666592885213, 0.0843194305578634, 0.16904167164264633, -0.41560370658552, -0.15328999481505096, 0.05808944250042043, 0.1188679399950854, 0.04614588702650796, -0.027169699305760683, -0.24852161448780852, 0.07365270468895094, -0.19575552404904278, -0.1690840640630905, -0.11879860885478187, 0.006954749027211772, 0.04274792869755131, -0.2653185444674224, 0.11411021888200747, 0.02936708117664635, 0.05007497128099203, -0.08560477139769436, -0.22180483828178874, 0.009419274970538693, 0.0719224776436418, 0.1272993033975455, 0.06586854693267753, 0.1422956857350793, -0.1715091307086197, -0.07720210002089786, 0.364570283967227, -0.009171932539211052, -0.21504755296077613, 0.06957411328054006, -0.2326768038490105, -0.07866246464874337, 0.14755474220463397, 0.15081703591870493, 0.09525741865434269, -0.17447052379300135, 0.07438586817911393, -0.08096276136636181, 0.1645022276996423, 0.10722963070026645, 0.055735897911956885, 0.18650922342664608, 0.16628707594026138, -0.003977151689036648, 0.05279110181191475, -0.05818375066789513, -0.10447675752739358, -0.3477379863869657, -0.06474235882097394, -0.14154805340297003, 0.09731330094619257, -0.09520588990829373, -0.1316958446249292, 0.35482796726720683, 0.03843616956088802, 0.2453837069120295, -0.004198054045364999, 0.2775824765333592, 0.11654293867598038, 0.0945951356414226, 0.07767644804432103, 0.28694575498028113, 0.18543160671949166, 0.08076787361469452, -0.2513860926115056, 0.09842417653336531, 0.03952747043498819] |
708.0163 | Vacuum Energy Density in the Quantum Yang - Mills Theory | Using the effective potential approach for composite operators, we have
formulated a general method of calculation of the truly non-perturbative
Yang-Mills vacuum energy density (this is, by definition, the Bag constant
apart from the sign). It is the main dynamical characteristic of the QCD ground
state. Our method allows one to make it free of the perturbative contributions
('contaminations'), by construction. We also perform an actual numerical
calculation of the Bag constant for the confining effective charge. Its choice
uniquely defines the Bag constant, which becomes free of all the types of the
perturbative contributions now, as well as possessing many other desirable
properties as colorless, gauge independence, etc. Using further the trace
anomaly relation, we develop a general formalism which makes it possible to
relate the Bag constant to the gluon condensate not using the weak coupling
solution for the corresponding $\beta$ function. Our numerical result for the
Bag constant shows a good agreement with other phenomenological estimates of
the gluon condensate.
| hep-ph hep-th | using the effective potential approach for composite operators we have formulated a general method of calculation of the truly nonperturbative yangmills vacuum energy density this is by definition the bag constant apart from the sign it is the main dynamical characteristic of the qcd ground state our method allows one to make it free of the perturbative contributions contaminations by construction we also perform an actual numerical calculation of the bag constant for the confining effective charge its choice uniquely defines the bag constant which becomes free of all the types of the perturbative contributions now as well as possessing many other desirable properties as colorless gauge independence etc using further the trace anomaly relation we develop a general formalism which makes it possible to relate the bag constant to the gluon condensate not using the weak coupling solution for the corresponding beta function our numerical result for the bag constant shows a good agreement with other phenomenological estimates of the gluon condensate | [['using', 'the', 'effective', 'potential', 'approach', 'for', 'composite', 'operators', 'we', 'have', 'formulated', 'a', 'general', 'method', 'of', 'calculation', 'of', 'the', 'truly', 'nonperturbative', 'yangmills', 'vacuum', 'energy', 'density', 'this', 'is', 'by', 'definition', 'the', 'bag', 'constant', 'apart', 'from', 'the', 'sign', 'it', 'is', 'the', 'main', 'dynamical', 'characteristic', 'of', 'the', 'qcd', 'ground', 'state', 'our', 'method', 'allows', 'one', 'to', 'make', 'it', 'free', 'of', 'the', 'perturbative', 'contributions', 'contaminations', 'by', 'construction', 'we', 'also', 'perform', 'an', 'actual', 'numerical', 'calculation', 'of', 'the', 'bag', 'constant', 'for', 'the', 'confining', 'effective', 'charge', 'its', 'choice', 'uniquely', 'defines', 'the', 'bag', 'constant', 'which', 'becomes', 'free', 'of', 'all', 'the', 'types', 'of', 'the', 'perturbative', 'contributions', 'now', 'as', 'well', 'as', 'possessing', 'many', 'other', 'desirable', 'properties', 'as', 'colorless', 'gauge', 'independence', 'etc', 'using', 'further', 'the', 'trace', 'anomaly', 'relation', 'we', 'develop', 'a', 'general', 'formalism', 'which', 'makes', 'it', 'possible', 'to', 'relate', 'the', 'bag', 'constant', 'to', 'the', 'gluon', 'condensate', 'not', 'using', 'the', 'weak', 'coupling', 'solution', 'for', 'the', 'corresponding', 'beta', 'function', 'our', 'numerical', 'result', 'for', 'the', 'bag', 'constant', 'shows', 'a', 'good', 'agreement', 'with', 'other', 'phenomenological', 'estimates', 'of', 'the', 'gluon', 'condensate']] | [-0.06768284931756054, 0.1493668858351313, -0.12037545066873938, 0.08786401834318906, -0.09541729327571219, -0.11889683349026607, 0.0491375887950031, 0.3345204336351595, -0.2390726416777431, -0.29198193883214807, 0.04941771332277385, -0.2556758086309387, -0.10562352171064886, 0.13553674829312445, 0.031279374982453194, 0.08554630686259011, 0.02212524514908165, 0.09345832747618663, -0.08218983153454057, -0.21335527984471134, 0.36509562247187083, 0.0313571825126426, 0.2726690828260263, 0.12686953608780824, 0.09165905681410176, 0.03414500573510018, -0.028205494227836286, 0.01585544707493548, -0.14031689774182174, 0.07831423167864923, 0.1924961213939509, 0.06560984052763395, 0.20985062920739816, -0.3570778759459228, -0.21852709616208021, 0.05943741473980659, 0.10335248910416306, 0.16013908166112664, -0.031527074710951626, -0.24570425492397116, 0.057437490329054965, -0.20314851029564632, -0.19170702005767956, -0.1395967368156495, -0.01622547755486395, -0.034150723607902146, -0.2934639764624002, 0.08015986603625444, -0.006217164377591921, -0.03329148970864302, -0.08143088698459995, -0.15255271117888575, 0.009733336262027818, 0.14016832429572848, 0.10509481351034133, 0.09067744963396729, 0.13081638195389092, -0.17774184079172284, -0.058219627562933175, 0.4048897667439437, -0.12457977171538774, -0.22233129812238817, 0.16232295450754464, -0.09467205601212986, -0.12068916259596318, 0.1112867542199699, 0.05945502799947066, 0.14224811391140751, -0.147484485225672, 0.1280150338893105, -0.05657939295223029, 0.14433230490543725, 0.055824032210476375, 0.034063670398877074, 0.20311467621498314, 0.1303412983096862, 0.025563484735921186, 0.13546076273057106, -0.0096605231276959, -0.12340392084382303, -0.39480559810127586, -0.12124927013888302, -0.1732956769903322, 0.03992571736454886, -0.1282925320834927, -0.2354502190315833, 0.38710713235124306, 0.1525305615898016, 0.17313706171784574, 0.04721398554039559, 0.30910236670698493, 0.13582792703242275, 0.08749223465922694, 0.03375350459024561, 0.25720160629348887, 0.15622849897710048, 0.08351308356776285, -0.25571329024780337, 0.017904183401674763, 0.11088503946327359] |
708.0164 | Biologically Inspired Nanomaterials: A Conference Report | The understanding of the nanoscale physical properties of biomolecules and
biomaterials will ultimately promote the research in the biological sciences.
In this review, we focused on theory, simulation, and experiments involving
nanoscale materials inspired by biological systems. Specifically, self-assembly
in living and synthetic materials, bio-functionalized nanomaterials and probing
techniques that use nanomaterials are discussed.
| physics.bio-ph physics.soc-ph | the understanding of the nanoscale physical properties of biomolecules and biomaterials will ultimately promote the research in the biological sciences in this review we focused on theory simulation and experiments involving nanoscale materials inspired by biological systems specifically selfassembly in living and synthetic materials biofunctionalized nanomaterials and probing techniques that use nanomaterials are discussed | [['the', 'understanding', 'of', 'the', 'nanoscale', 'physical', 'properties', 'of', 'biomolecules', 'and', 'biomaterials', 'will', 'ultimately', 'promote', 'the', 'research', 'in', 'the', 'biological', 'sciences', 'in', 'this', 'review', 'we', 'focused', 'on', 'theory', 'simulation', 'and', 'experiments', 'involving', 'nanoscale', 'materials', 'inspired', 'by', 'biological', 'systems', 'specifically', 'selfassembly', 'in', 'living', 'and', 'synthetic', 'materials', 'biofunctionalized', 'nanomaterials', 'and', 'probing', 'techniques', 'that', 'use', 'nanomaterials', 'are', 'discussed']] | [-0.05354695872153604, 0.1905043079448795, -0.027355210734876217, 0.014104681492662403, -0.05586920745877756, -0.12452402621932344, -0.004080338207401197, 0.39892178025372604, -0.24804042372852564, -0.28527631010446286, 0.08250092981702269, -0.2729352438494701, -0.339530609479105, 0.2665473912601118, -0.03791595809161663, 0.08600252947804553, 0.040980437925706305, -0.14425661980553908, 0.027275625344676275, -0.18303840321109252, 0.24412095334587824, 0.07494940289891222, 0.37021251231500946, 0.13602318036956368, 0.06972562467368941, -0.00013593889565931426, -0.03679077410035663, -0.0020743305277493265, -0.20903536719251187, 0.25180546866936815, 0.33624047520397987, 0.1070226601894117, 0.2860736438176698, -0.5832404461171892, -0.3491805798753544, 0.03642666973071216, 0.14124661817698292, 0.10691544179011274, -0.15987923835550813, -0.24487846306766625, 0.032077216301803234, -0.04103602376697516, -0.12014717130093938, -0.15330466245197588, -0.02971305670561614, 0.0928706374467799, -0.1232767993653262, -0.0023537439992651343, 0.03324552493480345, 0.1619095602935111, -0.11307531537669194, -0.13694908749312162, 0.013807400552279971, 0.11444508305026425, -0.007837843184393865, -0.0736936530339773, 0.3061864685560404, -0.22059143182424898, -0.1919069928311122, 0.4417973610020622, 0.0743179664498678, -0.16256147347114705, 0.31994581538149053, -0.1190188366971496, -0.18152021221747552, 0.03364411860066294, 0.2378284638678586, 0.14238507412718954, -0.20207516198839853, 0.08480556426069664, 0.062065066648992126, 0.13716081633336014, 0.044468709134013844, 0.0929169106659376, 0.2616389511860217, 0.3117922499982847, -0.04565737615511925, 0.11498298859913592, 0.006168213793662963, -0.07805954298452923, -0.14930517359257298, -0.21846662416916202, -0.1961614148415349, 0.06081914989691642, -0.02162825924891944, -0.14445215970691708, 0.3679036254028755, 0.20208757857067716, 0.09732558234180841, -0.08782994003828477, 0.22862041938222116, -0.08788607255728156, 0.07246237838882263, -0.13867169397848625, 0.2209418364822071, 0.1335375889558, 0.19047903890411058, -0.20767826964449207, 0.07557082587111465, -0.011130465667789665] |
708.0165 | Robust estimates in generalized partially linear models | In this paper, we introduce a family of robust estimates for the parametric
and nonparametric components under a generalized partially linear model, where
the data are modeled by $y_i|(\mathbf{x}_i,t_i)\sim F(\cdot,\mu_i)$ with
$\mu_i=H(\eta(t_i)+\mathbf{x}_i^{$\mathrm{T}$}\beta)$, for some known
distribution function F and link function H. It is shown that the estimates of
$\beta$ are root-n consistent and asymptotically normal. Through a Monte Carlo
study, the performance of these estimators is compared with that of the
classical ones.
| stat.ME | in this paper we introduce a family of robust estimates for the parametric and nonparametric components under a generalized partially linear model where the data are modeled by y_imathbfx_it_isim fcdotmu_i with mu_ihetat_imathbfx_imathrmtbeta for some known distribution function f and link function h it is shown that the estimates of beta are rootn consistent and asymptotically normal through a monte carlo study the performance of these estimators is compared with that of the classical ones | [['in', 'this', 'paper', 'we', 'introduce', 'a', 'family', 'of', 'robust', 'estimates', 'for', 'the', 'parametric', 'and', 'nonparametric', 'components', 'under', 'a', 'generalized', 'partially', 'linear', 'model', 'where', 'the', 'data', 'are', 'modeled', 'by', 'y_imathbfx_it_isim', 'fcdotmu_i', 'with', 'mu_ihetat_imathbfx_imathrmtbeta', 'for', 'some', 'known', 'distribution', 'function', 'f', 'and', 'link', 'function', 'h', 'it', 'is', 'shown', 'that', 'the', 'estimates', 'of', 'beta', 'are', 'rootn', 'consistent', 'and', 'asymptotically', 'normal', 'through', 'a', 'monte', 'carlo', 'study', 'the', 'performance', 'of', 'these', 'estimators', 'is', 'compared', 'with', 'that', 'of', 'the', 'classical', 'ones']] | [-0.05863996252620881, 0.0912024117088024, -0.08760865327810317, 0.08285853792224604, -0.018200729429249614, -0.14433323923157346, 0.03294922305356291, 0.40030603871588977, -0.2579243401701654, -0.26791477097119665, 0.14497644338153406, -0.27265398620142484, -0.170068300342266, 0.23207258521316862, -0.05873815260145446, 0.09788605087751549, 0.059924745092719375, 0.022482715699572484, -0.09355044388540194, -0.22832526723382024, 0.32539197357869903, 0.0494261338280409, 0.27124393894009186, -0.064205346980729, 0.09778756354640329, 0.004473126670476836, -0.052190336162670395, 0.03788363301313259, -0.1804105130323081, 0.11523958701889594, 0.21306541615860983, 0.10766924450724898, 0.28830997433356, -0.3300491485902121, -0.2200029156446247, 0.13820663570839598, 0.11575583111442311, 0.03381063948831403, -0.054968375096123824, -0.2376285164918698, 0.10643591729163283, -0.1824071121165975, -0.12205788777472162, -0.07543212288177349, -0.058913097146268883, 0.08131072982083219, -0.3578399300811366, 0.10715715613045639, 0.07824448482986067, 0.021897643765198514, -0.021878723868391882, -0.1333622597682644, -0.011081160236359902, 0.04037663621277037, 0.07084907443446278, 0.02715592223062167, 0.04341325924107083, -0.12785626428765834, -0.08325307878573805, 0.3220592377015429, -0.10961300854794157, -0.2687904100707719, 0.17518433691723875, -0.1381104665178753, -0.12019854543638796, 0.09677628957679574, 0.1335637813145426, 0.15018717147095104, -0.1933192930013781, 0.09926160357803972, -0.06750287497284967, 0.10584776482912121, -0.02838787364340584, -0.011273232019755622, 0.13982400344028859, 0.13254627682478495, 0.09031604248347846, 0.16339375501052594, -0.0909272094558872, -0.10654176422722743, -0.3278611314968324, -0.13335289720865623, -0.18308370648293007, 0.00012106066044997162, -0.10126588492540309, -0.21773121054702385, 0.37610829713373956, 0.1319551065877329, 0.20720676244826805, 0.1506537543347394, 0.27692088998959097, 0.1560759386834754, 0.022934486171309377, 0.10364211661557496, 0.20705204840928224, 0.15047629401546864, -0.03911928671845038, -0.1682524795276703, 0.13491543016435814, 0.022873414955823353] |
708.0166 | Common origin of \theta_{13} and \Delta m^2_{12} in a model of neutrino
mass with quaternion symmetry | The smallness of the 1-3 lepton mixing angle $\theta_{13}$ and of the
neutrino mass-squared-difference ratio $\Delta m^2_{12}/\Delta m^2_{23}$ can be
understood as the departure from a common limit where they both vanish. We
discuss in general the conditions for realizing the mass degeneracy of a pair
of neutrinos and show that the vanishing of a CP violating phase is needed. We
find that the discrete quaternion group Q of eight elements is the simplest
family symmetry which correlates the smallness of $\Delta m^2_{12}$ to the
value of $\theta_{13}$. In such a model we predict $0.12\lesssim
\sin\theta_{13} \lesssim 0.2$ if the ordering of the neutrino mass spectrum is
normal, and $\sin\theta_{13}\lesssim 0.12$ if it is inverted.
| hep-ph hep-ex | the smallness of the 13 lepton mixing angle theta_13 and of the neutrino masssquareddifference ratio delta m2_12delta m2_23 can be understood as the departure from a common limit where they both vanish we discuss in general the conditions for realizing the mass degeneracy of a pair of neutrinos and show that the vanishing of a cp violating phase is needed we find that the discrete quaternion group q of eight elements is the simplest family symmetry which correlates the smallness of delta m2_12 to the value of theta_13 in such a model we predict 012lesssim sintheta_13 lesssim 02 if the ordering of the neutrino mass spectrum is normal and sintheta_13lesssim 012 if it is inverted | [['the', 'smallness', 'of', 'the', '13', 'lepton', 'mixing', 'angle', 'theta_13', 'and', 'of', 'the', 'neutrino', 'masssquareddifference', 'ratio', 'delta', 'm2_12delta', 'm2_23', 'can', 'be', 'understood', 'as', 'the', 'departure', 'from', 'a', 'common', 'limit', 'where', 'they', 'both', 'vanish', 'we', 'discuss', 'in', 'general', 'the', 'conditions', 'for', 'realizing', 'the', 'mass', 'degeneracy', 'of', 'a', 'pair', 'of', 'neutrinos', 'and', 'show', 'that', 'the', 'vanishing', 'of', 'a', 'cp', 'violating', 'phase', 'is', 'needed', 'we', 'find', 'that', 'the', 'discrete', 'quaternion', 'group', 'q', 'of', 'eight', 'elements', 'is', 'the', 'simplest', 'family', 'symmetry', 'which', 'correlates', 'the', 'smallness', 'of', 'delta', 'm2_12', 'to', 'the', 'value', 'of', 'theta_13', 'in', 'such', 'a', 'model', 'we', 'predict', '012lesssim', 'sintheta_13', 'lesssim', '02', 'if', 'the', 'ordering', 'of', 'the', 'neutrino', 'mass', 'spectrum', 'is', 'normal', 'and', 'sintheta_13lesssim', '012', 'if', 'it', 'is', 'inverted']] | [-0.16028212305359743, 0.25806194051328274, -0.008102011371840228, 0.12155936712499808, -0.06565841888539023, -0.1280256491322238, 0.07422951614769462, 0.2935370877720751, -0.2630500968562456, -0.29768962056485115, 0.08842904813092638, -0.285865576631549, -0.08288541968139979, 0.13453359079813618, 0.002030243132229861, 0.002627699269371963, 0.009285211789648275, 0.029121863748039212, -0.16108889563265047, -0.17008822505270038, 0.31712701947109456, -0.006435772227878506, 0.2182584998642539, 0.06945908207211408, 0.08299355371645442, -0.06532438177414038, 0.030213692997422843, -0.05197185236826405, -0.11392413132243501, 0.0014086953272019421, 0.1633454192522074, 0.10156023552272099, 0.1191493547018114, -0.30757089452671205, -0.13935506683228924, 0.2146267967995021, 0.11900210874742484, 0.05498618143505778, -0.04883436170649958, -0.25058133200415084, 0.09968442232809491, -0.18632982247970528, -0.18870261137851993, -0.02341949554613313, 0.002486201145828844, -0.051414583755136876, -0.3693910983332374, 0.13594884849950536, 0.022951048845005734, 0.00317005050024605, 0.006544909884666538, -0.1643618258882549, -0.07019881529079096, 0.09322414958329352, 0.1375905986243926, 0.00993522171451299, 0.0559569789148628, -0.14359343817944195, -0.0367912233362461, 0.46164031772452685, -0.080589290838353, -0.17959232324616867, 0.07200971676607255, -0.21967718750579274, -0.13950399380294723, 0.08886161270794703, 0.11699556018150337, 0.08236490884535685, -0.10608278100928376, 0.12938817132207742, -0.11326502100354782, 0.17633652954723114, 0.0655531559961739, 0.007678528356697276, 0.2409706662937596, 0.17833940389771685, 0.1235946433257882, -0.031099978491437395, -0.1345050900320833, -0.022938390417645376, -0.37922813072129413, -0.15076205989572447, -0.1497057729289523, 0.1111807004372413, -0.11648735936758893, -0.12576231875363528, 0.4137229050199191, 0.12436396464588004, 0.23736948971762448, 0.03761144193321433, 0.24149699478938774, 0.12296380554766369, 0.061012189319306936, 0.02459284581395017, 0.3056734121480101, 0.14889833023184323, 0.06683120011511418, -0.26803720154933763, 0.05530481286313351, 0.03939217023618587] |
708.0167 | On the limiting distributions of multivariate depth-based rank sum
statistics and related tests | A depth-based rank sum statistic for multivariate data introduced by Liu and
Singh [J. Amer. Statist. Assoc. 88 (1993) 252--260] as an extension of the
Wilcoxon rank sum statistic for univariate data has been used in multivariate
rank tests in quality control and in experimental studies. Those applications,
however, are based on a conjectured limiting distribution, provided by Liu and
Singh [J. Amer. Statist. Assoc. 88 (1993) 252--260]. The present paper proves
the conjecture under general regularity conditions and, therefore, validates
various applications of the rank sum statistic in the literature. The paper
also shows that the corresponding rank sum tests can be more powerful than
Hotelling's T^2 test and some commonly used multivariate rank tests in
detecting location-scale changes in multivariate distributions.
| math.ST stat.TH | a depthbased rank sum statistic for multivariate data introduced by liu and singh j amer statist assoc 88 1993 252260 as an extension of the wilcoxon rank sum statistic for univariate data has been used in multivariate rank tests in quality control and in experimental studies those applications however are based on a conjectured limiting distribution provided by liu and singh j amer statist assoc 88 1993 252260 the present paper proves the conjecture under general regularity conditions and therefore validates various applications of the rank sum statistic in the literature the paper also shows that the corresponding rank sum tests can be more powerful than hotellings t2 test and some commonly used multivariate rank tests in detecting locationscale changes in multivariate distributions | [['a', 'depthbased', 'rank', 'sum', 'statistic', 'for', 'multivariate', 'data', 'introduced', 'by', 'liu', 'and', 'singh', 'j', 'amer', 'statist', 'assoc', '88', '1993', '252260', 'as', 'an', 'extension', 'of', 'the', 'wilcoxon', 'rank', 'sum', 'statistic', 'for', 'univariate', 'data', 'has', 'been', 'used', 'in', 'multivariate', 'rank', 'tests', 'in', 'quality', 'control', 'and', 'in', 'experimental', 'studies', 'those', 'applications', 'however', 'are', 'based', 'on', 'a', 'conjectured', 'limiting', 'distribution', 'provided', 'by', 'liu', 'and', 'singh', 'j', 'amer', 'statist', 'assoc', '88', '1993', '252260', 'the', 'present', 'paper', 'proves', 'the', 'conjecture', 'under', 'general', 'regularity', 'conditions', 'and', 'therefore', 'validates', 'various', 'applications', 'of', 'the', 'rank', 'sum', 'statistic', 'in', 'the', 'literature', 'the', 'paper', 'also', 'shows', 'that', 'the', 'corresponding', 'rank', 'sum', 'tests', 'can', 'be', 'more', 'powerful', 'than', 'hotellings', 't2', 'test', 'and', 'some', 'commonly', 'used', 'multivariate', 'rank', 'tests', 'in', 'detecting', 'locationscale', 'changes', 'in', 'multivariate', 'distributions']] | [-0.008520283042607168, -0.03125712880467869, -0.08706403364358116, 0.09757852692865143, -0.04444063294963711, -0.16489609846583575, 0.03868703762923698, 0.31916909253855874, -0.16211688807926888, -0.30879996000396565, 0.13356025675735014, -0.23092706310793695, -0.15877205175578532, 0.22048088363256335, -0.17333972518532423, 0.09766136739433796, -0.0018629632266777114, -0.05001591873347513, -0.0773025042750711, -0.38868614171500787, 0.2017112994481894, 0.13432207531949952, 0.3688085781442086, 0.007397254112596077, 0.06658297360967075, 0.09431777922590533, -0.133074675971442, 0.02087133416659699, -0.12627063645945893, 0.08550305188445169, 0.3079891354961644, 0.1763932434899717, 0.3176986820464723, -0.28702110580884477, -0.16241654635345457, 0.16713035170543045, 0.05131563708794203, -0.036801288739493315, 0.04054284228475222, -0.28014170275308375, 0.08452378955384916, -0.20085923894008328, -0.10027139710044981, -0.14496281164244187, 0.09577847088779484, 0.034921120801240144, -0.403095765023931, 0.18566102155244693, 0.09932686200881115, 0.1679971813154984, 0.014078389037369696, -0.25176439762850533, 0.03683241023508878, -0.027513563917749676, 0.07166004759713637, 0.023418193606059415, 0.047507883380513545, -0.0615161294887258, -0.181849145245823, 0.30751619442974115, -0.028576035631848462, -0.21409599213814748, 0.205828826764814, -0.09647461343248767, -0.19419292826590337, 0.047402378194773, 0.17306695737652789, 0.1242998968285493, -0.15824303403111897, 0.12614984032341994, -0.11575481077763906, 0.08730526950425846, 0.18000504086255903, -0.07797860259272943, 0.11328760354417908, 0.06810668872068983, 0.031212945370588545, 0.11279957976927288, -0.12475746960671664, -0.030206321412625275, -0.26459242276123857, -0.1789383568208326, -0.2283740474973336, 0.03832076720831808, -0.10863757005655533, -0.10894881332031459, 0.39598434613940636, 0.13366760122243407, 0.1590959919248092, 0.09121421946228044, 0.182786383883535, 0.08496655547541128, -0.035307985353322066, 0.15773311626042955, 0.19120318518517623, 0.2340621004643088, 0.06049142889909385, -0.09622948114136773, 0.08874946251542361, 0.11167514898375538] |
708.0168 | Topological Free Entropy Dimension in Unital C^* algebras (II) :
Orthogonal Sum of Unital C^*-algebras | In the paper, we obtain a formula for topological free entropy dimension in
the orthogonal sum (or direct sum) of unital C^* algebras. As a corollary, we
compute the topological free entropy dimension of any family of self-adjoint
generators of a finite dimensional C^* algebra.
| math.OA | in the paper we obtain a formula for topological free entropy dimension in the orthogonal sum or direct sum of unital c algebras as a corollary we compute the topological free entropy dimension of any family of selfadjoint generators of a finite dimensional c algebra | [['in', 'the', 'paper', 'we', 'obtain', 'a', 'formula', 'for', 'topological', 'free', 'entropy', 'dimension', 'in', 'the', 'orthogonal', 'sum', 'or', 'direct', 'sum', 'of', 'unital', 'c', 'algebras', 'as', 'a', 'corollary', 'we', 'compute', 'the', 'topological', 'free', 'entropy', 'dimension', 'of', 'any', 'family', 'of', 'selfadjoint', 'generators', 'of', 'a', 'finite', 'dimensional', 'c', 'algebra']] | [-0.18607067233986324, 0.14784098863601686, -0.04009564347151253, 0.010998225212097168, -0.072515168103079, -0.16390437099875677, 0.023579699134764574, 0.29268213394615383, -0.3286442653586467, -0.13557484969496728, 0.07829020738912125, -0.27864233400258753, -0.09347771650904582, 0.17002734210238687, -0.09386200898637374, 0.038224398489627574, 0.03934416475498842, 0.16383805623691944, -0.17576132591865543, -0.216790735307667, 0.38667051492051946, -0.07391415946702991, 0.23219564913047686, 0.08393388453664051, 0.11765066757798195, 0.048540847945130534, -0.018114424124360085, 0.042687556602888636, -0.23705063878248137, 0.1250961412054797, 0.30076246360937753, 0.09738309934942259, 0.17443109411332341, -0.30257877703342173, -0.16834847115808063, 0.21322845593094825, 0.14427427471511894, 0.047120869697795977, -0.017117779608815907, -0.1780760657042265, 0.08377843755814764, -0.32253107776244483, -0.151525368148254, -0.10138217127985424, 0.07274812426831988, -0.07392474830978446, -0.2937333044078615, 0.07622656664914555, 0.12123732488188478, 0.16058165217853254, -0.08025709836640292, -0.09729630740152465, -0.10591858807537291, 0.07642235465140806, -0.04593467141191165, -0.01146300554068552, 0.06045761824482017, -0.028326908770153144, -0.2134284000015921, 0.3495524492153587, -0.08297610260132286, -0.2535945373069909, 0.1468062500624607, -0.166403204575181, -0.112831732382377, 0.055020039714872834, 0.11190731051481433, 0.18771594183312523, -0.04703519497480657, 0.24369273516866896, -0.1178548749950197, 0.05861997902393341, 0.08339844039744801, 0.08276785827345318, 0.1205310715155469, 0.01943246251386073, 0.14219215684052972, 0.2336865643453267, 0.057069503588394986, -0.02196926979555024, -0.4345348624719514, -0.3066901680702964, -0.2185545793837971, 0.19762146829937896, -0.13561544611002319, -0.2544107639541229, 0.39701567362580037, 0.059099816503779344, 0.18150239108751218, 0.10250695716175769, 0.27399133096138634, 0.16091422407318734, 0.09148602430294785, 0.06656681491682927, 0.045622491515758964, 0.24151814635843039, -0.03851544914974107, -0.14891148463098539, -0.06422928880072303, 0.29290366503927445] |
708.0169 | Data-driven goodness-of-fit tests | We propose and study a general method for construction of consistent
statistical tests on the basis of possibly indirect, corrupted, or partially
available observations. The class of tests devised in the paper contains
Neyman's smooth tests, data-driven score tests, and some types of multi-sample
tests as basic examples. Our tests are data-driven and are additionally
incorporated with model selection rules. The method allows to use a wide class
of model selection rules that are based on the penalization idea. In
particular, many of the optimal penalties, derived in statistical literature,
can be used in our tests. We establish the behavior of model selection rules
and data-driven tests under both the null hypothesis and the alternative
hypothesis, derive an explicit detectability rule for alternative hypotheses,
and prove a master consistency theorem for the tests from the class. The paper
shows that the tests are applicable to a wide range of problems, including
hypothesis testing in statistical inverse problems, multi-sample problems, and
nonparametric hypothesis testing.
| math.ST math.PR stat.ME stat.TH | we propose and study a general method for construction of consistent statistical tests on the basis of possibly indirect corrupted or partially available observations the class of tests devised in the paper contains neymans smooth tests datadriven score tests and some types of multisample tests as basic examples our tests are datadriven and are additionally incorporated with model selection rules the method allows to use a wide class of model selection rules that are based on the penalization idea in particular many of the optimal penalties derived in statistical literature can be used in our tests we establish the behavior of model selection rules and datadriven tests under both the null hypothesis and the alternative hypothesis derive an explicit detectability rule for alternative hypotheses and prove a master consistency theorem for the tests from the class the paper shows that the tests are applicable to a wide range of problems including hypothesis testing in statistical inverse problems multisample problems and nonparametric hypothesis testing | [['we', 'propose', 'and', 'study', 'a', 'general', 'method', 'for', 'construction', 'of', 'consistent', 'statistical', 'tests', 'on', 'the', 'basis', 'of', 'possibly', 'indirect', 'corrupted', 'or', 'partially', 'available', 'observations', 'the', 'class', 'of', 'tests', 'devised', 'in', 'the', 'paper', 'contains', 'neymans', 'smooth', 'tests', 'datadriven', 'score', 'tests', 'and', 'some', 'types', 'of', 'multisample', 'tests', 'as', 'basic', 'examples', 'our', 'tests', 'are', 'datadriven', 'and', 'are', 'additionally', 'incorporated', 'with', 'model', 'selection', 'rules', 'the', 'method', 'allows', 'to', 'use', 'a', 'wide', 'class', 'of', 'model', 'selection', 'rules', 'that', 'are', 'based', 'on', 'the', 'penalization', 'idea', 'in', 'particular', 'many', 'of', 'the', 'optimal', 'penalties', 'derived', 'in', 'statistical', 'literature', 'can', 'be', 'used', 'in', 'our', 'tests', 'we', 'establish', 'the', 'behavior', 'of', 'model', 'selection', 'rules', 'and', 'datadriven', 'tests', 'under', 'both', 'the', 'null', 'hypothesis', 'and', 'the', 'alternative', 'hypothesis', 'derive', 'an', 'explicit', 'detectability', 'rule', 'for', 'alternative', 'hypotheses', 'and', 'prove', 'a', 'master', 'consistency', 'theorem', 'for', 'the', 'tests', 'from', 'the', 'class', 'the', 'paper', 'shows', 'that', 'the', 'tests', 'are', 'applicable', 'to', 'a', 'wide', 'range', 'of', 'problems', 'including', 'hypothesis', 'testing', 'in', 'statistical', 'inverse', 'problems', 'multisample', 'problems', 'and', 'nonparametric', 'hypothesis', 'testing']] | [-0.040375853200197404, 0.0006007112758526967, -0.12100965739156411, 0.11340919879773644, -0.09533192804711728, -0.17012283566516417, 0.0988722768986449, 0.35922022726089675, -0.22517880132176166, -0.30419491563403717, 0.15641943667086836, -0.20316106371127676, -0.14478761833189685, 0.25253923331955846, -0.07526547084648184, 0.12271159908882817, 0.08828765206736015, -0.026643410439323063, -0.06701075008276142, -0.23841960368280876, 0.3008501982870597, 0.05465150474816378, 0.3510626734868606, -0.0034266898534946327, 0.09637302055846374, 0.008302985563405727, -0.09548399861947708, 0.05204010396578743, -0.13466088829515288, 0.12539464676318093, 0.24546949597406972, 0.22000630455737236, 0.33153676580454855, -0.38139675070811635, -0.2115538541748591, 0.13083081707312652, 0.06309559158523756, 0.09009458812041511, -0.04053411009989999, -0.26427187270376307, 0.08620109747626756, -0.13915128696569173, -0.1114940956532041, -0.11668197237286557, -0.07289820446409971, 0.028176871608325674, -0.3838069473787502, 0.09402572224059491, 0.06829021701680645, 0.08039734781108385, -0.061814296036812995, -0.14153056369988717, 0.09613188851247627, 0.061667096408289726, 0.09665929663574975, -0.0662366378033945, 0.10512148304642435, -0.09189773673613762, -0.16447388843570385, 0.3713419373987094, -0.03992814150213213, -0.24224417793215966, 0.22917791968497214, -0.05500989135903266, -0.22242313159481147, 0.05015490145816759, 0.20296832981970778, 0.14807827214773264, -0.18991022551592235, 0.06655883873945696, -0.06360458429514265, 0.1304713173603719, 0.013008425469321707, -0.01592976806372507, 0.1846320436227541, 0.1594817770682161, 0.007743175598247079, 0.1367937181554906, -0.11551768284439584, -0.07705055548883746, -0.3824456993181921, -0.130070406076694, -0.14898695464908757, -0.0320675942783981, -0.11475470082120516, -0.17818589667943907, 0.3714375026021267, 0.20379618797029878, 0.12410097978948444, 0.127094921698091, 0.2525897119365678, 0.08371594139057686, 0.03501042458471596, 0.02494599958281804, 0.22595478880645542, 0.13093380411755454, -0.018473549968808706, -0.14567949241627168, 0.10232204522229045, 0.03977686659850043] |
708.017 | On the radar method in general-relativistic spacetimes | If a clock, mathematically modeled by a parametrized timelike curve in a
general-relativistic spacetime, is given, the radar method assigns a time and a
distance to every event which is sufficiently close to the clock. Several
geometric aspects of this method are reviewed and their physical interpretation
is discussed.
| gr-qc | if a clock mathematically modeled by a parametrized timelike curve in a generalrelativistic spacetime is given the radar method assigns a time and a distance to every event which is sufficiently close to the clock several geometric aspects of this method are reviewed and their physical interpretation is discussed | [['if', 'a', 'clock', 'mathematically', 'modeled', 'by', 'a', 'parametrized', 'timelike', 'curve', 'in', 'a', 'generalrelativistic', 'spacetime', 'is', 'given', 'the', 'radar', 'method', 'assigns', 'a', 'time', 'and', 'a', 'distance', 'to', 'every', 'event', 'which', 'is', 'sufficiently', 'close', 'to', 'the', 'clock', 'several', 'geometric', 'aspects', 'of', 'this', 'method', 'are', 'reviewed', 'and', 'their', 'physical', 'interpretation', 'is', 'discussed']] | [-0.15853532662197034, 0.11622610429720003, -0.13966957847967895, 0.07799204783419109, -0.0698443696054877, -0.18258217656604794, 0.03759436791154499, 0.3861245031715656, -0.2431726694411161, -0.24062737142096977, 0.09878540573860234, -0.21980929889773226, -0.15839740478110556, 0.22070520690509252, -0.12328660588863553, 0.049916027798032274, 0.055604861469521205, 0.11687800198869437, -0.07657082007285587, -0.1773573093268336, 0.2756399850228003, 0.08062263965910794, 0.20768455663049706, 0.00505605011427661, 0.16902991621850097, -0.019422561766541734, -0.05517508135158188, 0.06143667337921809, -0.10513773180392323, 0.08994000585635706, 0.2410159637125171, 0.1882433147378722, 0.25127847751184385, -0.3572070722970684, -0.24160969078692854, 0.1050965453745151, 0.07413021814344185, 0.11378925915615044, -0.02052216144392685, -0.3105474242142269, 0.07229266311897307, -0.16206442941056223, -0.17296622557641597, -0.0249593496816803, 0.09003851543731835, -0.008633072830128426, -0.2282512843304751, 0.000403454774344454, 0.04464507004132076, 0.056182643987846614, -0.05641174331611516, -0.011969720868735897, 0.0071685567536220254, 0.08152108697448762, 0.029324552326995348, 0.0862268792199237, 0.07935656909236913, -0.012718260378519796, -0.10989308974952722, 0.4715185606358003, -0.0039139727928808755, -0.25975689345172476, 0.1533381853642284, -0.12372954280058644, -0.0759759528315341, 0.11616710537322322, 0.12425725344492465, 0.13789208526057856, -0.18671721449045806, 0.07496654310463262, -0.010790428944996424, 0.13970512910080807, 0.07518269612016726, 0.014317294952165032, 0.2628811839967966, 0.16966741250789896, 0.003024133635038624, 0.0887632959199195, -0.08501196683061366, -0.11728886241207317, -0.36663651033019534, -0.12394051504682521, -0.21231607604315694, 0.05030466050707868, -0.11238823228513309, -0.15978127451879637, 0.3598096854604629, 0.1113277271351948, 0.22220058885536023, 0.03433514414687774, 0.33981509305232643, 0.12455021666020763, 0.0064244829260801176, 0.08157841740556214, 0.21266936487993415, 0.14317495269909958, 0.09295933096840674, -0.1723017443199547, 0.05548891465996905, 0.12289846835334842] |
708.0171 | Virtual screening with support vector machines and structure kernels | Support vector machines and kernel methods have recently gained considerable
attention in chemoinformatics. They offer generally good performance for
problems of supervised classification or regression, and provide a flexible and
computationally efficient framework to include relevant information and prior
knowledge about the data and problems to be handled. In particular, with kernel
methods molecules do not need to be represented and stored explicitly as
vectors or fingerprints, but only to be compared to each other through a
comparison function technically called a kernel. While classical kernels can be
used to compare vector or fingerprint representations of molecules, completely
new kernels were developed in the recent years to directly compare the 2D or 3D
structures of molecules, without the need for an explicit vectorization step
through the extraction of molecular descriptors. While still in their infancy,
these approaches have already demonstrated their relevance on several toxicity
prediction and structure-activity relationship problems.
| q-bio.QM cs.LG | support vector machines and kernel methods have recently gained considerable attention in chemoinformatics they offer generally good performance for problems of supervised classification or regression and provide a flexible and computationally efficient framework to include relevant information and prior knowledge about the data and problems to be handled in particular with kernel methods molecules do not need to be represented and stored explicitly as vectors or fingerprints but only to be compared to each other through a comparison function technically called a kernel while classical kernels can be used to compare vector or fingerprint representations of molecules completely new kernels were developed in the recent years to directly compare the 2d or 3d structures of molecules without the need for an explicit vectorization step through the extraction of molecular descriptors while still in their infancy these approaches have already demonstrated their relevance on several toxicity prediction and structureactivity relationship problems | [['support', 'vector', 'machines', 'and', 'kernel', 'methods', 'have', 'recently', 'gained', 'considerable', 'attention', 'in', 'chemoinformatics', 'they', 'offer', 'generally', 'good', 'performance', 'for', 'problems', 'of', 'supervised', 'classification', 'or', 'regression', 'and', 'provide', 'a', 'flexible', 'and', 'computationally', 'efficient', 'framework', 'to', 'include', 'relevant', 'information', 'and', 'prior', 'knowledge', 'about', 'the', 'data', 'and', 'problems', 'to', 'be', 'handled', 'in', 'particular', 'with', 'kernel', 'methods', 'molecules', 'do', 'not', 'need', 'to', 'be', 'represented', 'and', 'stored', 'explicitly', 'as', 'vectors', 'or', 'fingerprints', 'but', 'only', 'to', 'be', 'compared', 'to', 'each', 'other', 'through', 'a', 'comparison', 'function', 'technically', 'called', 'a', 'kernel', 'while', 'classical', 'kernels', 'can', 'be', 'used', 'to', 'compare', 'vector', 'or', 'fingerprint', 'representations', 'of', 'molecules', 'completely', 'new', 'kernels', 'were', 'developed', 'in', 'the', 'recent', 'years', 'to', 'directly', 'compare', 'the', '2d', 'or', '3d', 'structures', 'of', 'molecules', 'without', 'the', 'need', 'for', 'an', 'explicit', 'vectorization', 'step', 'through', 'the', 'extraction', 'of', 'molecular', 'descriptors', 'while', 'still', 'in', 'their', 'infancy', 'these', 'approaches', 'have', 'already', 'demonstrated', 'their', 'relevance', 'on', 'several', 'toxicity', 'prediction', 'and', 'structureactivity', 'relationship', 'problems']] | [0.0035053804656490686, 0.01761029474058887, -0.06431817988088975, 0.08996036073658616, -0.13293952562535802, -0.1837116288583881, 0.042579861510700236, 0.4751040125886599, -0.27938349477946756, -0.30059725224971773, 0.1444056581837746, -0.2565630829551568, -0.1474663902182753, 0.21745115145187205, -0.061015000346427165, 0.1216964373116692, 0.11457895893293123, 0.04644510356573543, -0.08809769744131093, -0.2680600054220607, 0.28282497997085254, 0.06524332573016485, 0.2975201051061352, 0.06831447364296764, 0.08906290536513552, -0.035041621112031865, -0.062447454241725306, 0.005110694045821825, -0.06709505603338281, 0.19193870517852096, 0.30950562193989756, 0.1496838462156302, 0.29589598705526443, -0.4886241799344619, -0.2765848948938462, 0.11711103672161699, 0.17539232321083545, 0.10797390021383763, -0.03774361730009938, -0.2866264758259058, 0.08710646116252367, -0.15517347950488328, -0.03716208577466508, -0.20556957063497974, -0.011537648749848207, 0.017985796864765386, -0.25427378305544457, 0.04999314435641281, 0.05541632893184821, 0.06349887629970909, -0.05320739117295792, -0.1588923161725203, 0.026300169931103786, 0.1555964676477015, 0.025883225072175265, 0.05728092793918525, 0.11729693279601633, -0.17122724544877807, -0.1544880767077363, 0.386952896527946, -0.023796490943059325, -0.2693147988229369, 0.24668819095784178, -0.05079852577609321, -0.13090391072444618, 0.11524372222522894, 0.2093183764939507, 0.12092605417904755, -0.16480042305774986, 0.027615762101874376, 0.009276348752900959, 0.1566368425101973, 0.05068940188735724, 0.03281683173030615, 0.19705641916797806, 0.13245571117692936, -0.0013279217993840576, 0.1037850678653922, -0.040208008871413764, -0.08372447867722561, -0.1712002883851528, -0.1632740834634751, -0.18668967275414616, -0.0449685296586055, -0.04801548091316363, -0.16174070382025094, 0.3570963987149298, 0.16341116087006716, 0.24240306561502317, 0.031634963133061925, 0.3205140721766899, 0.06048291060064609, 0.15329898590532443, 0.08013482628002142, 0.18971576771388451, 0.08920440764166415, 0.09432889016034703, -0.11767773169558496, 0.11776444471053159, 0.030859093284234404] |
708.0172 | Zero-Mode Contribution in Nucleon-Delta Transition | We investigate the transition form factors between nucleon and $\Delta$(1232)
particles by using a covariant quark-spectator-diquark field theory model in
(3+1) dimensions. Performing a light-front calculation in parallel with the
manifestly covariant calculation in light-front helicity basis, we examine the
light-front zero-mode contribution to the helicity components of light-front
good ("+") current matrix elements. Choosing the light-front gauge
($\epsilon^+_{h=\pm}=0$) with circular polarization in Drell-Yan-West frame, we
find that only the helicity components $({1\over 2}, {1\over 2})$ and $({1\over
2},-{1\over 2})$ of the good current receive the zero-mode contribution. Taking
into account the zero-mode, we find the prescription independence in obtaining
the light-front solution of form factors from any three helicity matrix
elements with smeared light-front wavefunctions. The angular condition, which
guarantees the full covariance of different schemes, is recovered.
| hep-ph | we investigate the transition form factors between nucleon and delta1232 particles by using a covariant quarkspectatordiquark field theory model in 31 dimensions performing a lightfront calculation in parallel with the manifestly covariant calculation in lightfront helicity basis we examine the lightfront zeromode contribution to the helicity components of lightfront good current matrix elements choosing the lightfront gauge epsilon_hpm0 with circular polarization in drellyanwest frame we find that only the helicity components 1over 2 1over 2 and 1over 21over 2 of the good current receive the zeromode contribution taking into account the zeromode we find the prescription independence in obtaining the lightfront solution of form factors from any three helicity matrix elements with smeared lightfront wavefunctions the angular condition which guarantees the full covariance of different schemes is recovered | [['we', 'investigate', 'the', 'transition', 'form', 'factors', 'between', 'nucleon', 'and', 'delta1232', 'particles', 'by', 'using', 'a', 'covariant', 'quarkspectatordiquark', 'field', 'theory', 'model', 'in', '31', 'dimensions', 'performing', 'a', 'lightfront', 'calculation', 'in', 'parallel', 'with', 'the', 'manifestly', 'covariant', 'calculation', 'in', 'lightfront', 'helicity', 'basis', 'we', 'examine', 'the', 'lightfront', 'zeromode', 'contribution', 'to', 'the', 'helicity', 'components', 'of', 'lightfront', 'good', 'current', 'matrix', 'elements', 'choosing', 'the', 'lightfront', 'gauge', 'epsilon_hpm0', 'with', 'circular', 'polarization', 'in', 'drellyanwest', 'frame', 'we', 'find', 'that', 'only', 'the', 'helicity', 'components', '1over', '2', '1over', '2', 'and', '1over', '21over', '2', 'of', 'the', 'good', 'current', 'receive', 'the', 'zeromode', 'contribution', 'taking', 'into', 'account', 'the', 'zeromode', 'we', 'find', 'the', 'prescription', 'independence', 'in', 'obtaining', 'the', 'lightfront', 'solution', 'of', 'form', 'factors', 'from', 'any', 'three', 'helicity', 'matrix', 'elements', 'with', 'smeared', 'lightfront', 'wavefunctions', 'the', 'angular', 'condition', 'which', 'guarantees', 'the', 'full', 'covariance', 'of', 'different', 'schemes', 'is', 'recovered']] | [-0.1428025504611137, 0.19460741759440492, -0.09538325547940091, 0.08070563790776457, -0.057888895605823824, -0.08342359711726506, 0.013655348344140552, 0.3291058454973002, -0.14630144178896906, -0.2236259006895125, -0.09563691427077477, -0.2547907119040333, -0.10512668638035566, 0.007451027681651924, 0.056227940570799606, 0.03933986937553282, 0.03879090180132715, 0.018451296657856022, -0.16297022253459703, -0.15438511685305645, 0.3437368813828225, 0.005082434837868999, 0.27024354986728183, 0.048474220669872704, 0.12786951381713152, 0.07021860415965969, -0.07114437261655454, -0.02635041547436563, -0.0918380756447732, 0.06299441155149704, 0.20184503961169709, 0.11608196036624056, 0.15363663113823842, -0.4525442692998146, -0.1224868745203056, 0.04702838167866012, 0.16940067100545597, 0.158261471268137, 0.03239833640782308, -0.26305050283507814, 0.03679016191098425, -0.19864411000901508, -0.17785156683142608, -0.140136694147562, -0.0061347178314694216, -0.11102713346074794, -0.32026496705310864, 0.09498154161320556, -0.03574349526463756, 0.008604624970180412, -0.07033148234237045, -0.2366832886482515, -0.02928342717507529, 0.10785973861458756, 0.1054617553655546, 0.13899219711680735, 0.12196075541728604, -0.17092014507516212, -0.1081689335683006, 0.393981502243569, -0.0424024185003151, -0.29766145565118346, 0.0057425779061362385, -0.24217151853048968, -0.1368444679149737, 0.11696840522603856, 0.13145051279755693, 0.06350854726596958, -0.15948726819635975, 0.1402538667501335, -0.04752006431272815, 0.14840426178286886, 0.09803595398330972, 0.08915825119049894, 0.1776726311959681, 0.06614282600847739, -0.06402887061105705, 0.04377918022256049, -0.027204526160540622, -0.1257424461156396, -0.4008896964203034, -0.1471917521190508, -0.16270902997533243, 0.09582360394831214, -0.1405401688717243, -0.12092900268053489, 0.4294919711870274, 0.08845010765048394, 0.190326877596182, 0.04158094965220828, 0.3296091759259561, 0.17693633912038798, 0.08076369026971478, 0.13959306856942555, 0.25295003207163913, 0.20339830136961407, 0.09275216223960299, -0.28895093579517883, -0.10437757439083523, 0.15333021119503037] |
708.0173 | K-minus Estimator Approach to Large Scale Structure | Self similar 3D distributions of point-particles, with a given quasifractal
dimension D, were generated on a Menger sponge model and then compared with
\textit{2dfGRS} and \textit{Virgo project} data
\footnote{http://www.mso.anu.edu.au/2dFGRS/,
http://www.mpa-garching.mpg.de/Virgo/}. Using the principle of local knowledge,
it is argued that in a finite volume of space only the two-point minus
estimator is acceptable in the correlation analysis of self similar spatial
distributions. In this sense, we have simplified the Pietronero-Labini
correlative analysis by defining a K-minus estimator, which when applied to
2dfGRS data revealed the quasifractal dimension $D\approx 2$ as expected. In
our approach the K-minus estimator is used only locally. Dimensions between D =
1 and D = 1.7, as suggested by the standard $\xi (r)$ analysis, were found to
be fallacy of the method. In order to visualize spatial quasifractal objects,
we created a small software program called \textit{RoPo} (''Rotate Points'').
This program illustrates and manifests local correlative analysis in which the
visual inspection emerged as a first step and a key part of the method.
Finally, we discuss importance and perspective of the visual inspection on
available real and simulated distributions. It is also argued that results of
contemporary cosmological simulations do not faithfully represent real data, as
they show a formation of ever increasing collapsars. We consent that 2dfGRS
data are reminiscent of some kind of underlying turbulence like effects in
action.
| astro-ph | self similar 3d distributions of pointparticles with a given quasifractal dimension d were generated on a menger sponge model and then compared with textit2dfgrs and textitvirgo project data footnotehttpwwwmsoanueduau2dfgrs httpwwwmpagarchingmpgdevirgo using the principle of local knowledge it is argued that in a finite volume of space only the twopoint minus estimator is acceptable in the correlation analysis of self similar spatial distributions in this sense we have simplified the pietronerolabini correlative analysis by defining a kminus estimator which when applied to 2dfgrs data revealed the quasifractal dimension dapprox 2 as expected in our approach the kminus estimator is used only locally dimensions between d 1 and d 17 as suggested by the standard xi r analysis were found to be fallacy of the method in order to visualize spatial quasifractal objects we created a small software program called textitropo rotate points this program illustrates and manifests local correlative analysis in which the visual inspection emerged as a first step and a key part of the method finally we discuss importance and perspective of the visual inspection on available real and simulated distributions it is also argued that results of contemporary cosmological simulations do not faithfully represent real data as they show a formation of ever increasing collapsars we consent that 2dfgrs data are reminiscent of some kind of underlying turbulence like effects in action | [['self', 'similar', '3d', 'distributions', 'of', 'pointparticles', 'with', 'a', 'given', 'quasifractal', 'dimension', 'd', 'were', 'generated', 'on', 'a', 'menger', 'sponge', 'model', 'and', 'then', 'compared', 'with', 'textit2dfgrs', 'and', 'textitvirgo', 'project', 'data', 'footnotehttpwwwmsoanueduau2dfgrs', 'httpwwwmpagarchingmpgdevirgo', 'using', 'the', 'principle', 'of', 'local', 'knowledge', 'it', 'is', 'argued', 'that', 'in', 'a', 'finite', 'volume', 'of', 'space', 'only', 'the', 'twopoint', 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708.0174 | HTL approach to the viscosity of quark plasma | The quark viscosity in the quark gluon plasma is evaluated in HTL
approximation. The different contributions to the viscosity arising from the
various components of the quark spectral function are discussed. The
calculation is extended to finite values of the chemical potential.
| hep-ph | the quark viscosity in the quark gluon plasma is evaluated in htl approximation the different contributions to the viscosity arising from the various components of the quark spectral function are discussed the calculation is extended to finite values of the chemical potential | [['the', 'quark', 'viscosity', 'in', 'the', 'quark', 'gluon', 'plasma', 'is', 'evaluated', 'in', 'htl', 'approximation', 'the', 'different', 'contributions', 'to', 'the', 'viscosity', 'arising', 'from', 'the', 'various', 'components', 'of', 'the', 'quark', 'spectral', 'function', 'are', 'discussed', 'the', 'calculation', 'is', 'extended', 'to', 'finite', 'values', 'of', 'the', 'chemical', 'potential']] | [-0.06068972768151157, 0.236173961710717, -0.15032082062125915, 0.08850801501622689, -0.028437603265047073, -0.013123969214835338, 0.019465475077075616, 0.30067296964781626, -0.24470182965021758, -0.20780100469433127, 0.01448468812408724, -0.2803866824002138, 0.020981491255086093, 0.0924266674999325, 0.04691233636722678, 0.10002986570976818, -0.010409593914768525, -0.01405566370868612, -0.10460921319290287, -0.20973688842994825, 0.37296322478158844, -0.03251055082572358, 0.22079517798764364, 0.22450103362401327, 0.03771765490195581, -0.034186960641472114, -0.10228889107349373, 0.0026668496429920197, -0.08812299954609314, 0.02430084896540003, 0.2243923285901214, -0.010904046956316702, 0.16067099199339974, -0.36596721854238284, -0.23062847380060703, 0.0425124544251178, 0.08405240022555172, 0.10022114481849019, -0.015934090152205455, -0.188400923052714, 0.09976955670295172, -0.24623157882264682, -0.17352757900066318, -0.07775780576325599, 0.006552440369324316, 0.017864717126247428, -0.32649726549252156, 0.0813462245056317, -0.06650860155267375, -0.04287347986939408, -0.07818952128512874, -0.2893792103887314, -0.0733986030293939, 0.12084759612168584, 0.14260490055728173, 0.07865785856154703, 0.2062298253710781, -0.24007103572200453, -0.05895550530182109, 0.42640194296836853, -0.10803683589966524, -0.22875728582342467, 0.2027585719423812, -0.1910769013532748, -0.05582250407453449, 0.13333821831093656, 0.1538911835190707, 0.11189344339141999, -0.2245085050928451, 0.14681301700572172, 0.012606342057032245, 0.11072747192035119, 0.08900887072308078, 0.014203982294670172, 0.1832546510157131, 0.15341299554953972, -0.0655202584500893, 0.15695726747314134, -0.06847400374577514, -0.14896089255454995, -0.36133546550713835, -0.08254711327442367, -0.17549989896915144, -0.0013404561738882745, -0.18770754771927992, -0.22097363952724708, 0.4618826114705631, 0.13323448828998066, 0.18363007541102844, -0.042119834439030716, 0.35089458827860653, 0.21093114908962024, 0.07073082899053891, 0.04508267704486137, 0.29374601869356065, 0.25226120899675325, 0.16168989347560064, -0.34034166870350463, 0.010013203616143159, 0.13798736469886666] |
708.0175 | Convergence rates for Bayesian density estimation of
infinite-dimensional exponential families | We study the rate of convergence of posterior distributions in density
estimation problems for log-densities in periodic Sobolev classes characterized
by a smoothness parameter p. The posterior expected density provides a
nonparametric estimation procedure attaining the optimal minimax rate of
convergence under Hellinger loss if the posterior distribution achieves the
optimal rate over certain uniformity classes. A prior on the density class of
interest is induced by a prior on the coefficients of the trigonometric series
expansion of the log-density. We show that when p is known, the posterior
distribution of a Gaussian prior achieves the optimal rate provided the prior
variances die off sufficiently rapidly. For a mixture of normal distributions,
the mixing weights on the dimension of the exponential family are assumed to be
bounded below by an exponentially decreasing sequence. To avoid the use of
infinite bases, we develop priors that cut off the series at a
sample-size-dependent truncation point. When the degree of smoothness is
unknown, a finite mixture of normal priors indexed by the smoothness parameter,
which is also assigned a prior, produces the best rate. A rate-adaptive
estimator is derived.
| math.ST stat.TH | we study the rate of convergence of posterior distributions in density estimation problems for logdensities in periodic sobolev classes characterized by a smoothness parameter p the posterior expected density provides a nonparametric estimation procedure attaining the optimal minimax rate of convergence under hellinger loss if the posterior distribution achieves the optimal rate over certain uniformity classes a prior on the density class of interest is induced by a prior on the coefficients of the trigonometric series expansion of the logdensity we show that when p is known the posterior distribution of a gaussian prior achieves the optimal rate provided the prior variances die off sufficiently rapidly for a mixture of normal distributions the mixing weights on the dimension of the exponential family are assumed to be bounded below by an exponentially decreasing sequence to avoid the use of infinite bases we develop priors that cut off the series at a samplesizedependent truncation point when the degree of smoothness is unknown a finite mixture of normal priors indexed by the smoothness parameter which is also assigned a prior produces the best rate a rateadaptive estimator is derived | [['we', 'study', 'the', 'rate', 'of', 'convergence', 'of', 'posterior', 'distributions', 'in', 'density', 'estimation', 'problems', 'for', 'logdensities', 'in', 'periodic', 'sobolev', 'classes', 'characterized', 'by', 'a', 'smoothness', 'parameter', 'p', 'the', 'posterior', 'expected', 'density', 'provides', 'a', 'nonparametric', 'estimation', 'procedure', 'attaining', 'the', 'optimal', 'minimax', 'rate', 'of', 'convergence', 'under', 'hellinger', 'loss', 'if', 'the', 'posterior', 'distribution', 'achieves', 'the', 'optimal', 'rate', 'over', 'certain', 'uniformity', 'classes', 'a', 'prior', 'on', 'the', 'density', 'class', 'of', 'interest', 'is', 'induced', 'by', 'a', 'prior', 'on', 'the', 'coefficients', 'of', 'the', 'trigonometric', 'series', 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'derived']] | [-0.09098744779019742, 0.09312579146833348, -0.12157258958480245, 0.07133676635692954, -0.048511312577269365, -0.09696779779183703, 0.10468479482066893, 0.38232577958622493, -0.3036843976962405, -0.24272016386023243, 0.11124399850849767, -0.22115346126862476, -0.0777049612958689, 0.16684922273900057, -0.10682583187983648, 0.10426696381670096, 0.03564345457188382, 0.06643061929357214, -0.12317422136186144, -0.30174961302278414, 0.32347383278900305, 0.07368789146075377, 0.3160904321064417, -0.059714508496187126, 0.13084568421315476, -0.003187231568527578, -0.02119851355390573, -0.0402894346572056, -0.19043225311033893, 0.1280171295351072, 0.2191403087807467, 0.14789872672786383, 0.35591510543851435, -0.29836102891209965, -0.2339271833969129, 0.16175821497092477, 0.12896423932114565, 0.04513555331898199, -0.019104346347897237, -0.2348418693687465, 0.08387818737207232, -0.16018303703725956, -0.12401229649077396, -0.06476313834758224, -0.006384147552622331, 0.0739577712302373, 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708.0176 | Extreme statistics of complex random and quantum chaotic states | An exact analytical description of extreme intensity statistics in complex
random states is derived. These states have the statistical properties of the
Gaussian and Circular Unitary Ensemble eigenstates of random matrix theory.
Although the components are correlated by the normalization constraint, it is
still possible to derive compact formulae for all values of the dimensionality
N. The maximum intensity result slowly approaches the Gumbel distribution even
though the variables are bounded, whereas the minimum intensity result rapidly
approaches the Weibull distribution. Since random matrix theory is conjectured
to be applicable to chaotic quantum systems, we calculate the extreme
eigenfunction statistics for the standard map with parameters at which its
classical map is fully chaotic. The statistical behaviors are consistent with
the finite-N formulae.
| quant-ph cond-mat.stat-mech nlin.CD | an exact analytical description of extreme intensity statistics in complex random states is derived these states have the statistical properties of the gaussian and circular unitary ensemble eigenstates of random matrix theory although the components are correlated by the normalization constraint it is still possible to derive compact formulae for all values of the dimensionality n the maximum intensity result slowly approaches the gumbel distribution even though the variables are bounded whereas the minimum intensity result rapidly approaches the weibull distribution since random matrix theory is conjectured to be applicable to chaotic quantum systems we calculate the extreme eigenfunction statistics for the standard map with parameters at which its classical map is fully chaotic the statistical behaviors are consistent with the finiten formulae | [['an', 'exact', 'analytical', 'description', 'of', 'extreme', 'intensity', 'statistics', 'in', 'complex', 'random', 'states', 'is', 'derived', 'these', 'states', 'have', 'the', 'statistical', 'properties', 'of', 'the', 'gaussian', 'and', 'circular', 'unitary', 'ensemble', 'eigenstates', 'of', 'random', 'matrix', 'theory', 'although', 'the', 'components', 'are', 'correlated', 'by', 'the', 'normalization', 'constraint', 'it', 'is', 'still', 'possible', 'to', 'derive', 'compact', 'formulae', 'for', 'all', 'values', 'of', 'the', 'dimensionality', 'n', 'the', 'maximum', 'intensity', 'result', 'slowly', 'approaches', 'the', 'gumbel', 'distribution', 'even', 'though', 'the', 'variables', 'are', 'bounded', 'whereas', 'the', 'minimum', 'intensity', 'result', 'rapidly', 'approaches', 'the', 'weibull', 'distribution', 'since', 'random', 'matrix', 'theory', 'is', 'conjectured', 'to', 'be', 'applicable', 'to', 'chaotic', 'quantum', 'systems', 'we', 'calculate', 'the', 'extreme', 'eigenfunction', 'statistics', 'for', 'the', 'standard', 'map', 'with', 'parameters', 'at', 'which', 'its', 'classical', 'map', 'is', 'fully', 'chaotic', 'the', 'statistical', 'behaviors', 'are', 'consistent', 'with', 'the', 'finiten', 'formulae']] | [-0.08113954660702284, 0.1842136115999419, -0.10900976261638892, 0.11403385725447802, -0.004943725921789079, -0.16092477222086815, 0.019260787463754536, 0.3465139794454917, -0.26643995848688773, -0.26262156014156535, 0.09452736087340285, -0.2894740880928873, -0.13999553728371678, 0.17810619604486094, -0.04427787251921931, 0.13090009770294125, 0.04475272668154562, 0.06288545636263321, -0.08606812206704578, -0.2211806398808835, 0.28810622881552794, 0.05200190696301227, 0.3156125133694339, -0.03248954986456812, 0.05737064200703327, 0.005259748544483408, -0.013861409804927624, -0.01758941490206928, -0.09106870118256022, 0.09233592283804105, 0.23358637370865762, 0.12505617407453437, 0.20719858822299214, -0.3873542250414205, -0.22634236346097375, 0.1368330275957904, 0.12446030906147922, 0.10110514470455577, 0.04283255412114587, -0.2695898760443296, 0.07744426014492424, -0.13011805088509146, -0.19717941814427817, -0.09167068502752156, 0.062381295017837506, 0.041147040225928876, -0.306646287876628, 0.11688994303368395, 0.08791556334259307, 0.03583761792236227, -0.0175781274324177, -0.13326938434814414, 0.011410368729488758, 0.11261389483849148, 0.042893188717828046, -0.012436084159672624, 0.13350238997065197, -0.13094596238428258, -0.06409024729628146, 0.33184602187673856, -0.047110521893312295, -0.2156429346423687, 0.15215313946260367, -0.17512900741558854, -0.13630345409993477, 0.1358496922454456, 0.1230325830449176, 0.10092403089279324, -0.14954783168538072, 0.11692736304234486, -0.03876852069988968, 0.13662025642891726, 0.0331302768611387, 0.04377037360204187, 0.2078101213555783, 0.05000121736088843, 0.062118677380227395, 0.11764547881022913, -0.06959142644957798, -0.1883315117447637, -0.2660737494953219, -0.06693185809375037, -0.24250856291491357, 0.046301911774326146, -0.15649665327640006, -0.21787937965274343, 0.3813393224916625, 0.12849741519336036, 0.21622393256038186, 0.1270293276141799, 0.26440925156409906, 0.2354531948458464, 0.00378270948502591, 0.0814551618063777, 0.21952284324338767, 0.21376527857974292, 0.03901264628246843, -0.1669136313210446, 0.08767169440256023, 0.0580945290227343] |
708.0177 | Asymptotically minimax Bayes predictive densities | Given a random sample from a distribution with density function that depends
on an unknown parameter $\theta$, we are interested in accurately estimating
the true parametric density function at a future observation from the same
distribution. The asymptotic risk of Bayes predictive density estimates with
Kullback--Leibler loss function $D(f_{\theta}||{\hat{f}})=\int{f_{\theta}
\log{(f_{\theta}/ hat{f})}}$ is used to examine various ways of choosing prior
distributions; the principal type of choice studied is minimax. We seek
asymptotically least favorable predictive densities for which the corresponding
asymptotic risk is minimax. A result resembling Stein's paradox for estimating
normal means by the maximum likelihood holds for the uniform prior in the
multivariate location family case: when the dimensionality of the model is at
least three, the Jeffreys prior is minimax, though inadmissible. The Jeffreys
prior is both admissible and minimax for one- and two-dimensional location
problems.
| math.ST stat.TH | given a random sample from a distribution with density function that depends on an unknown parameter theta we are interested in accurately estimating the true parametric density function at a future observation from the same distribution the asymptotic risk of bayes predictive density estimates with kullbackleibler loss function df_thetahatfintf_theta logf_theta hatf is used to examine various ways of choosing prior distributions the principal type of choice studied is minimax we seek asymptotically least favorable predictive densities for which the corresponding asymptotic risk is minimax a result resembling steins paradox for estimating normal means by the maximum likelihood holds for the uniform prior in the multivariate location family case when the dimensionality of the model is at least three the jeffreys prior is minimax though inadmissible the jeffreys prior is both admissible and minimax for one and twodimensional location problems | [['given', 'a', 'random', 'sample', 'from', 'a', 'distribution', 'with', 'density', 'function', 'that', 'depends', 'on', 'an', 'unknown', 'parameter', 'theta', 'we', 'are', 'interested', 'in', 'accurately', 'estimating', 'the', 'true', 'parametric', 'density', 'function', 'at', 'a', 'future', 'observation', 'from', 'the', 'same', 'distribution', 'the', 'asymptotic', 'risk', 'of', 'bayes', 'predictive', 'density', 'estimates', 'with', 'kullbackleibler', 'loss', 'function', 'df_thetahatfintf_theta', 'logf_theta', 'hatf', 'is', 'used', 'to', 'examine', 'various', 'ways', 'of', 'choosing', 'prior', 'distributions', 'the', 'principal', 'type', 'of', 'choice', 'studied', 'is', 'minimax', 'we', 'seek', 'asymptotically', 'least', 'favorable', 'predictive', 'densities', 'for', 'which', 'the', 'corresponding', 'asymptotic', 'risk', 'is', 'minimax', 'a', 'result', 'resembling', 'steins', 'paradox', 'for', 'estimating', 'normal', 'means', 'by', 'the', 'maximum', 'likelihood', 'holds', 'for', 'the', 'uniform', 'prior', 'in', 'the', 'multivariate', 'location', 'family', 'case', 'when', 'the', 'dimensionality', 'of', 'the', 'model', 'is', 'at', 'least', 'three', 'the', 'jeffreys', 'prior', 'is', 'minimax', 'though', 'inadmissible', 'the', 'jeffreys', 'prior', 'is', 'both', 'admissible', 'and', 'minimax', 'for', 'one', 'and', 'twodimensional', 'location', 'problems']] | [-0.03598353672151481, 0.04915581495906005, -0.13082594236182252, 0.14115729293255747, -0.08154709899057057, -0.14094024545166398, 0.06724158690113874, 0.3767162273726324, -0.25602250028891066, -0.2763522893214177, 0.11558254364215986, -0.26733685174725785, -0.11635737366512092, 0.14655795406013128, -0.12580440803193046, 0.13598460869279003, -0.0037487911393553237, 0.08058266436857899, -0.11187169569830009, -0.2677710079587996, 0.3442961306363874, 0.07487375222581581, 0.34032581725504496, -0.060790742643816516, 0.11304764133830467, 0.059193196665685975, 0.0010411926871505533, -0.023952898286014497, -0.18756754237001322, 0.12533008666364068, 0.2558638184487711, 0.17126194866676644, 0.36740166603852686, -0.2968814738370868, -0.22681976757590136, 0.17020983661246233, 0.10074687465756832, 0.0543899556246321, 0.006919362544027721, -0.2281370654848343, 0.044797517904369366, -0.13571705545101614, -0.15768603456757255, -0.025385933155453098, -0.02402690719187695, 0.034661433861733676, -0.38207692512902464, 0.1546371009058054, 0.046419456886657835, 0.03386305706289998, -0.05004681286871107, -0.1972475738101469, 0.005745374171328212, 0.08440983303534513, 0.10262849476497729, 0.01597996540435583, 0.12375136862239583, -0.1484216199779924, -0.05106221979320811, 0.2690819202570489, -0.05660416605630821, -0.244265867709896, 0.12627806317360296, -0.17350392989528768, -0.10408955013947085, 0.0908157287019366, 0.15020422373701187, 0.15099177924562654, -0.17503202947786667, 0.08003395795737168, -0.04612102771703031, 0.11307982220076514, 0.08122694497523544, -0.02408540005163446, 0.17423045499943687, 0.14830402465516795, 0.14524041844810612, 0.12745767816167025, -0.137863079247398, -0.10028604377336446, -0.3298972030000312, -0.10912808644743364, -0.2580316377341421, 0.02488891631500782, -0.19146737864178973, -0.19280233364008423, 0.3552544200181091, 0.13177733026601265, 0.19994449702152697, 0.12194637451269902, 0.24982351494314026, 0.1564785225820782, -0.027176010007732107, 0.11677643842315369, 0.21476340280160866, 0.10592847161443673, -0.03929719875097601, -0.16989091915302795, 0.2103915257535766, 0.04596917961391002] |
708.0178 | Theoretical gravitational lensing. Beyond the weak-field small-angle
approximation | An overview is given on those theoretical gravitational lensing results that
can be formulated in a spacetime setting, without assuming that the
gravitational fields are weak and that the bending angles are small. The first
part is devoted to analytical methods considering spacetimes in which the
equations for light rays (lightlike geodesics) is completely integrable. This
includes spherically symmetric static spacetimes, the Kerr spacetime and plane
gravitational waves. The second part is devoted to qualitative methods which
give some information on lensing properties without actually solving the
equation for lightlike geodesics. This includes Morse theory, methods from
differential topology and bifurcation theory.
| gr-qc | an overview is given on those theoretical gravitational lensing results that can be formulated in a spacetime setting without assuming that the gravitational fields are weak and that the bending angles are small the first part is devoted to analytical methods considering spacetimes in which the equations for light rays lightlike geodesics is completely integrable this includes spherically symmetric static spacetimes the kerr spacetime and plane gravitational waves the second part is devoted to qualitative methods which give some information on lensing properties without actually solving the equation for lightlike geodesics this includes morse theory methods from differential topology and bifurcation theory | [['an', 'overview', 'is', 'given', 'on', 'those', 'theoretical', 'gravitational', 'lensing', 'results', 'that', 'can', 'be', 'formulated', 'in', 'a', 'spacetime', 'setting', 'without', 'assuming', 'that', 'the', 'gravitational', 'fields', 'are', 'weak', 'and', 'that', 'the', 'bending', 'angles', 'are', 'small', 'the', 'first', 'part', 'is', 'devoted', 'to', 'analytical', 'methods', 'considering', 'spacetimes', 'in', 'which', 'the', 'equations', 'for', 'light', 'rays', 'lightlike', 'geodesics', 'is', 'completely', 'integrable', 'this', 'includes', 'spherically', 'symmetric', 'static', 'spacetimes', 'the', 'kerr', 'spacetime', 'and', 'plane', 'gravitational', 'waves', 'the', 'second', 'part', 'is', 'devoted', 'to', 'qualitative', 'methods', 'which', 'give', 'some', 'information', 'on', 'lensing', 'properties', 'without', 'actually', 'solving', 'the', 'equation', 'for', 'lightlike', 'geodesics', 'this', 'includes', 'morse', 'theory', 'methods', 'from', 'differential', 'topology', 'and', 'bifurcation', 'theory']] | [-0.18606475676300333, 0.0713960830427252, -0.10032065874239539, 0.12737767295409724, -0.15752871810257726, -0.10688567004056976, -0.09083546572775744, 0.3394840958473437, -0.21041941611717144, -0.21245355035780983, 0.06775679351424105, -0.30821520533850966, -0.17132989896516151, 0.22559109472614877, -0.050968871656211785, 0.056817922380515466, 0.054177585596620455, 0.028688235391004412, -0.08186493471365276, -0.23328061113773169, 0.402284575014503, 0.04458894485644266, 0.22643382423648648, 0.02874295178837344, 0.0918890553773107, 0.019459182675014817, -0.04588046029904017, 0.06910860454481021, -0.16707567912496468, 0.0750811807628648, 0.24030687383321278, 0.10615715735669558, 0.19244418356238918, -0.41241443428375263, -0.2412632821611695, 0.08032086557325195, 0.12687734897275837, 0.1925806742704784, -0.06396771051838775, -0.3618460286993022, 0.05971228422633573, -0.09854492651956047, -0.19246360057891876, -0.05516906959169051, 0.01652069642738092, 0.01138464266242569, -0.1980166987095978, 0.08818196731747366, 0.08274424981494781, 0.0344193009066158, -0.1150164468186524, -0.026038113858222085, -0.0026885943907294786, 0.063681649742648, 0.11866590149435854, 0.029101088436493904, 0.09114341853373666, -0.0843627327623978, -0.10109429729773718, 0.4162048500615592, -0.05629557698700285, -0.29624079671624465, 0.11216068420303511, -0.1697241904250547, -0.12455052352400825, 0.16250348166224785, 0.16739954478016086, 0.1874677760197836, -0.1868840442404297, 0.1713500567055627, 0.004125305214056782, 0.13003176308634198, 0.12061580811974172, -0.0017614367865391221, 0.27269793613174675, 0.0652185714000142, 0.0791959557180092, 0.11523707559464645, -0.010596783717582915, -0.11719653490067952, -0.3792035715544925, -0.09014898153962385, -0.12742052146110355, 0.09625103225128032, -0.13397861338250783, -0.19111643129886657, 0.35296055658117814, 0.08510821520387396, 0.10006125691785094, 0.04819289092933211, 0.3143264268748645, 0.0918723521856865, -0.009726226233932026, 0.09327513888003487, 0.3501267639943513, 0.18866576947381392, 0.1314105722966476, -0.15238797203574886, -0.020197774279022626, 0.14980135743926262] |
708.0179 | Crystal Structure and Physical Properties of Mg6Cu16Si7-type M6Ni16Si7,
for M = Mg, Sc, Ti, Nb, and Ta | Five compounds were investigated for magnetic character and
superconductivity, all with non-magnetic nickel and band structures containing
flat bands and steep bands. The syntheses and crystal structures, refined by
powder X-ray diffraction, are reported for M6Ni16Si7, where M = Mg, Sc, Ti, Nb,
and Ta. All compounds form in the Mg6Cu16Si7 structure type. Resistance
measurements are also reported on M6Ni16Si7 (M = Mg, Sc, Ti, and Nb) down to
0.3 K, with all four showing metallic conductivity. No superconductivity is
observed. Magnetization measurements for all compounds reveal essentially
temperature independent paramagnetism, with a tendency toward more enhanced low
temperature paramagnetism for the cases of Mg6Ni16Si7 and Sc6Ni16Si7.
| cond-mat.supr-con cond-mat.mtrl-sci | five compounds were investigated for magnetic character and superconductivity all with nonmagnetic nickel and band structures containing flat bands and steep bands the syntheses and crystal structures refined by powder xray diffraction are reported for m6ni16si7 where m mg sc ti nb and ta all compounds form in the mg6cu16si7 structure type resistance measurements are also reported on m6ni16si7 m mg sc ti and nb down to 03 k with all four showing metallic conductivity no superconductivity is observed magnetization measurements for all compounds reveal essentially temperature independent paramagnetism with a tendency toward more enhanced low temperature paramagnetism for the cases of mg6ni16si7 and sc6ni16si7 | [['five', 'compounds', 'were', 'investigated', 'for', 'magnetic', 'character', 'and', 'superconductivity', 'all', 'with', 'nonmagnetic', 'nickel', 'and', 'band', 'structures', 'containing', 'flat', 'bands', 'and', 'steep', 'bands', 'the', 'syntheses', 'and', 'crystal', 'structures', 'refined', 'by', 'powder', 'xray', 'diffraction', 'are', 'reported', 'for', 'm6ni16si7', 'where', 'm', 'mg', 'sc', 'ti', 'nb', 'and', 'ta', 'all', 'compounds', 'form', 'in', 'the', 'mg6cu16si7', 'structure', 'type', 'resistance', 'measurements', 'are', 'also', 'reported', 'on', 'm6ni16si7', 'm', 'mg', 'sc', 'ti', 'and', 'nb', 'down', 'to', '03', 'k', 'with', 'all', 'four', 'showing', 'metallic', 'conductivity', 'no', 'superconductivity', 'is', 'observed', 'magnetization', 'measurements', 'for', 'all', 'compounds', 'reveal', 'essentially', 'temperature', 'independent', 'paramagnetism', 'with', 'a', 'tendency', 'toward', 'more', 'enhanced', 'low', 'temperature', 'paramagnetism', 'for', 'the', 'cases', 'of', 'mg6ni16si7', 'and', 'sc6ni16si7']] | [-0.1182017582503613, 0.22281601779395716, 0.07061707257293165, 0.010983068357454613, -0.021723804825451224, -0.21031666442286223, 0.13654825390782208, 0.4586762779019773, -0.18305786351207642, -0.3339411505160388, -0.013965566857950761, -0.4293134580552578, -0.05944629087112844, 0.1890933170588687, 0.08986596555449068, -0.03512132871685026, -0.0332981915876735, -0.08765036242781207, -0.15358967212494462, -0.2545456175729487, 0.28666684416588395, -0.0005453995964489878, 0.31631325602997096, 0.033085388275794686, -0.031725541539490226, -0.05092896217945963, 0.11085007142275571, 0.11716352024011939, -0.13226525080390275, 0.014576737044844777, 0.2982922308333218, -0.11487920086547092, 0.08956228261115029, -0.40464985533617437, -0.23663955984637142, -0.039988782168366016, 0.08910205212421715, 0.07259321686811745, -0.0787237223512784, -0.23225613600574435, 0.1286985652614385, -0.045795379073824735, -0.09398631096351892, -0.08824999648379162, 0.034259907365776596, -0.03100606072694063, -0.23387669353571255, 0.08315916541701882, 0.0724158431775868, 0.1664697321690619, -0.17075379956979306, -0.25355628761230037, -0.13407921397127212, -0.019063606699346564, 0.015519685873296113, 0.023285833192057907, 0.11736076681409031, -0.020832323608919977, -0.06790564050665125, 0.34460624685976654, -0.049809609894873576, 0.0112608228251338, 0.16682835697662085, -0.2212347373366356, -0.09719390113372356, 0.21901947014033796, 0.04205046175222378, 0.07316786391951609, -0.1267521146783838, 0.06508136910240864, 0.01909561900421977, 0.19880176542326808, 0.0688956165779382, 0.1001046845538076, 0.22525808952748774, 0.1761106513265986, -0.0009292440593708307, 0.058233632538467646, -0.16587112351553515, 0.07413397373631597, -0.16547666705213487, -0.22101496233604848, -0.1517336261062883, 0.0667421342106536, -0.09334598378176452, -0.21928851862903684, 0.30830353463301435, 0.039584929714910684, 0.19061594664584847, -0.07528333288850263, 0.17449624560773372, 0.03434770360821858, 0.07277399663813412, 0.10827304260339587, 0.2101499028224498, 0.23102824300527572, 0.15625295957317575, -0.2446378870960325, 0.10707045742776244, -0.020275191296823324] |
708.018 | A Factorization Law for Entanglement Decay | We present a simple and general factorization law for quantum systems shared
by two parties, which describes the time evolution of entanglement upon passage
of either component through an arbitrary noisy channel. The robustness of
entanglement-based quantum information processing protocols is thus easily and
fully characterized by a single quantity.
| quant-ph | we present a simple and general factorization law for quantum systems shared by two parties which describes the time evolution of entanglement upon passage of either component through an arbitrary noisy channel the robustness of entanglementbased quantum information processing protocols is thus easily and fully characterized by a single quantity | [['we', 'present', 'a', 'simple', 'and', 'general', 'factorization', 'law', 'for', 'quantum', 'systems', 'shared', 'by', 'two', 'parties', 'which', 'describes', 'the', 'time', 'evolution', 'of', 'entanglement', 'upon', 'passage', 'of', 'either', 'component', 'through', 'an', 'arbitrary', 'noisy', 'channel', 'the', 'robustness', 'of', 'entanglementbased', 'quantum', 'information', 'processing', 'protocols', 'is', 'thus', 'easily', 'and', 'fully', 'characterized', 'by', 'a', 'single', 'quantity']] | [-0.1865129255503416, 0.16232338210364106, -0.11970487078651786, -0.0011153293563984335, 0.012619006959721447, -0.2572671211510897, 0.06027214678004384, 0.3605117575824261, -0.31278363917022944, -0.2653727010264993, 0.11082390679977834, -0.21870035097002982, -0.11433590571396053, 0.17996979597955942, -0.06116662723943591, 0.1319333131588064, 0.05401935461908579, 0.027648726888000966, -0.013930707117542624, -0.2322889006510377, 0.34879440609365703, 0.03779483719728887, 0.2992104043997824, 0.021259254589676858, 0.12417554661631584, 0.08259564658626914, -0.040377771481871605, -0.009326333906501531, -0.07383023452013732, 0.11505052147433162, 0.24894082279875873, 0.16308702487498522, 0.2593977359635755, -0.4320732307806611, -0.24173298578709365, 0.05406607208773494, 0.1489936076104641, 0.15891453318996354, -0.050184593424201014, -0.334299736097455, 0.0148188223131001, -0.22584993563126773, -0.06537148896604776, -0.09699782859534026, 0.005627117082476616, -0.05233315367251635, -0.26895597580820324, 0.11345736565068364, 0.07877456236630678, 0.0579956279695034, 0.03981820925138891, 0.0314529667631723, 0.07695963457226754, 0.1666046929359436, -0.09546952293254435, -0.02878852335968986, 0.1438683888502419, -0.1204439901560545, -0.1964847874082625, 0.3427778030652553, -0.04446017674170435, -0.20735839944332837, 0.15526273986441083, -0.07356914971489459, -0.11661033894866706, 0.0686495284549892, 0.1289147466327995, 0.09105288512379048, -0.21516790211200715, 0.041937994004692884, 0.01691435519605875, 0.21804016408044846, 0.0003564179071690887, 0.10599727326654829, 0.21226235737558455, 0.08799362244084477, 0.06223107538186014, 0.18191874764859675, -0.013287955336272717, -0.18748864381108432, -0.2834082033485174, -0.21930825895164163, -0.27121777620166543, 0.07990181280300021, -0.11274570866429713, -0.1054120242735371, 0.3999265665560961, 0.0790348156541586, 0.18901946789585053, 0.06010050518205389, 0.37689597211778164, 0.11862220291048288, 0.0362382984533906, 0.10557878728024661, 0.18190138712525367, 0.13149699431844056, 0.10318779666908086, -0.19914160796441138, 0.146752346502617, 0.02181069410406053] |
708.0181 | Post-ischaemic treatment with the cyclooxygenase-2 inhibitor nimesulide
reduces blood-brain barrier disruption and leukocyte infiltration following
transient focal cerebral ischaemia in rats | Several studies suggest that cyclooxygenase (COX)-2 plays a pivotal role in
the progression of ischaemic brain damage. In the present study, we
investigated the effects of selective inhibition of COX-2 with nimesulide (12
mg/kg) and selective inhibition of COX-1 with valeryl salicylate (VAS, 12-120
mg/kg) on prostaglandin E2 (PGE2) levels, myeloperoxidase (MPO) activity, Evans
blue (EB) extravasation and infarct volume in a standardized model of transient
focal cerebral ischaemia in the rat. Post-ischaemic treatment with nimesulide
markedly reduced the increase in PGE2 levels in the ischaemic cerebral cortex
24 h after stroke and diminished infarct size by 48% with respect to
vehicle-treated animals after 3 days of reperfusion. Furthermore, nimesulide
significantly attenuated the blood-brain barrier (BBB) damage and leukocyte
infiltration (as measured by EB leakage and MPO activity, respectively) seen at
48 h after the initial ischaemic episode. These studies provide the first
experimental evidence that COX-2 inhibition with nimesulide is able to limit
BBB disruption and leukocyte infiltration following transient focal cerebral
ischaemia. Neuroprotection afforded by nimesulide is observed even when the
treatment is delayed until 6 h after the onset of ischaemia, confirming a wide
therapeutic window of COX-2 inhibitors in experimental stroke. On the contrary,
selective inhibition of COX-1 with VAS had no significant effect on the
evaluated parameters. These data suggest that COX-2 activity, but not COX-1
activity, contributes to the progression of focal ischaemic brain injury, and
that the beneficial effects observed with non-selective COX inhibitors are
probably associated to COX-2 rather than to COX-1 inhibition.
| q-bio.NC q-bio.TO | several studies suggest that cyclooxygenase cox2 plays a pivotal role in the progression of ischaemic brain damage in the present study we investigated the effects of selective inhibition of cox2 with nimesulide 12 mgkg and selective inhibition of cox1 with valeryl salicylate vas 12120 mgkg on prostaglandin e2 pge2 levels myeloperoxidase mpo activity evans blue eb extravasation and infarct volume in a standardized model of transient focal cerebral ischaemia in the rat postischaemic treatment with nimesulide markedly reduced the increase in pge2 levels in the ischaemic cerebral cortex 24 h after stroke and diminished infarct size by 48 with respect to vehicletreated animals after 3 days of reperfusion furthermore nimesulide significantly attenuated the bloodbrain barrier bbb damage and leukocyte infiltration as measured by eb leakage and mpo activity respectively seen at 48 h after the initial ischaemic episode these studies provide the first experimental evidence that cox2 inhibition with nimesulide is able to limit bbb disruption and leukocyte infiltration following transient focal cerebral ischaemia neuroprotection afforded by nimesulide is observed even when the treatment is delayed until 6 h after the onset of ischaemia confirming a wide therapeutic window of cox2 inhibitors in experimental stroke on the contrary selective inhibition of cox1 with vas had no significant effect on the evaluated parameters these data suggest that cox2 activity but not cox1 activity contributes to the progression of focal ischaemic brain injury and that the beneficial effects observed with nonselective cox inhibitors are probably associated to cox2 rather than to cox1 inhibition | [['several', 'studies', 'suggest', 'that', 'cyclooxygenase', 'cox2', 'plays', 'a', 'pivotal', 'role', 'in', 'the', 'progression', 'of', 'ischaemic', 'brain', 'damage', 'in', 'the', 'present', 'study', 'we', 'investigated', 'the', 'effects', 'of', 'selective', 'inhibition', 'of', 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'beneficial', 'effects', 'observed', 'with', 'nonselective', 'cox', 'inhibitors', 'are', 'probably', 'associated', 'to', 'cox2', 'rather', 'than', 'to', 'cox1', 'inhibition']] | [-0.07626525720539937, 0.16128464663393705, 0.02021423904583431, 0.037601244322454125, 0.03244604712578625, -0.15837322687164612, 0.0831371380510148, 0.39471655678350914, -0.15727519919824323, -0.25096156843395917, 0.09782397678651684, -0.27558202041607155, -0.21393147057397405, 0.16351919720347155, -0.14154662037723573, -0.05812349603304014, 0.0632138754797794, -0.0010597561790064913, 0.08029283966910591, -0.22048231371704805, 0.1949202650790348, 0.11229502896190081, 0.2523616512668006, 0.08234299398083919, 0.04806030486655697, -0.010362216850237445, -0.01730965862714267, -0.03071360467642787, -0.12724328987328204, 0.05727057512811864, 0.26251216630945323, 0.1156038904566363, 0.3241465244280091, -0.46612073678659044, -0.24360574749091013, 0.09083417985637329, 0.12009879853764949, 0.02549696639783469, 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708.0182 | Search for b--> u transitions in B- -> [K+pi-pi0]_D K- | We search for decays of a B meson into a neutral D meson and a kaon, with the
D meson decaying into K+pi-pi0. This final state can be reached through the b
--> c transition B- -> D0K- followed by the doubly Cabibbo-suppressed D0 -->
K+pi-pi0, or the b --> u transition B- --> D0bar K- followed by the
Cabibbo-favored D0bar --> K+ pi-pi 0. The interference of these two amplitudes
is sensitive to the angle gamma of the unitarity triangle. We present
preliminary results based on 226 10^{6} e+e- --> Y(4s) --> BBbar events
collected with the BABAR detector at SLAC. We find no significant evidence for
these decays and we set a limit R_ADS =(BR(B- -->[K+pi-pi0]_D K-)+ BR(B+ -->
[K-pi+pi0]_D K+))/(BR(B- -->[K-p i+pi0]_D K-)+ BR(B+ --> [K+pi-pi0]_D
K+))<0.039 at 95% confidence level, which we translate with a Bayesian approach
into r_B = |A(B- --> D0bar K-)|/|A(B- --> D0bar K-)| < 0.185 at 95% confidence
level.
| hep-ex | we search for decays of a b meson into a neutral d meson and a kaon with the d meson decaying into kpipi0 this final state can be reached through the b c transition b d0k followed by the doubly cabibbosuppressed d0 kpipi0 or the b u transition b d0bar k followed by the cabibbofavored d0bar k pipi 0 the interference of these two amplitudes is sensitive to the angle gamma of the unitarity triangle we present preliminary results based on 226 106 ee y4s bbbar events collected with the babar detector at slac we find no significant evidence for these decays and we set a limit r_ads brb kpipi0_d k brb kpipi0_d kbrb kp ipi0_d k brb kpipi0_d k0039 at 95 confidence level which we translate with a bayesian approach into r_b ab d0bar kab d0bar k 0185 at 95 confidence level | [['we', 'search', 'for', 'decays', 'of', 'a', 'b', 'meson', 'into', 'a', 'neutral', 'd', 'meson', 'and', 'a', 'kaon', 'with', 'the', 'd', 'meson', 'decaying', 'into', 'kpipi0', 'this', 'final', 'state', 'can', 'be', 'reached', 'through', 'the', 'b', 'c', 'transition', 'b', 'd0k', 'followed', 'by', 'the', 'doubly', 'cabibbosuppressed', 'd0', 'kpipi0', 'or', 'the', 'b', 'u', 'transition', 'b', 'd0bar', 'k', 'followed', 'by', 'the', 'cabibbofavored', 'd0bar', 'k', 'pipi', '0', 'the', 'interference', 'of', 'these', 'two', 'amplitudes', 'is', 'sensitive', 'to', 'the', 'angle', 'gamma', 'of', 'the', 'unitarity', 'triangle', 'we', 'present', 'preliminary', 'results', 'based', 'on', '226', '106', 'ee', 'y4s', 'bbbar', 'events', 'collected', 'with', 'the', 'babar', 'detector', 'at', 'slac', 'we', 'find', 'no', 'significant', 'evidence', 'for', 'these', 'decays', 'and', 'we', 'set', 'a', 'limit', 'r_ads', 'brb', 'kpipi0_d', 'k', 'brb', 'kpipi0_d', 'kbrb', 'kp', 'ipi0_d', 'k', 'brb', 'kpipi0_d', 'k0039', 'at', '95', 'confidence', 'level', 'which', 'we', 'translate', 'with', 'a', 'bayesian', 'approach', 'into', 'r_b', 'ab', 'd0bar', 'kab', 'd0bar', 'k', '0185', 'at', '95', 'confidence', 'level']] | [-0.12972029250979955, 0.23968986758762703, -0.06306775367619204, 0.06307530890917405, -0.01641695259271988, -0.1940454622032121, 0.24956451493074253, 0.26216738948132845, -0.1790188629512808, -0.22694200442305634, -0.06804666618949601, -0.4225872837007046, 0.04613978594508288, 0.06987397025971274, 0.13814000845554153, 0.11797885076874601, 0.14342600096216693, 0.04493660711117887, -0.03547847734298557, -0.16850894377400566, 0.1789970774336585, -0.04051579347412501, 0.16238394430173295, 0.0929102914574157, -0.052161259157583115, 0.002219253928134484, -0.04504890950878949, -0.08102378600410053, -0.21302598738776787, 0.01277679879567586, 0.2413928029260465, 0.16407445631754983, 0.12545423119861102, -0.27883863608336207, 0.035104475878844306, 0.15040842126556006, 0.15826816441757338, -0.00799319706607743, 0.041495840924160025, -0.470169234847916, 0.19374576121169543, -0.14088247929466888, 0.02198352956412626, -0.048782172439885994, 0.07328533569109692, -0.16952240821639342, -0.4102407126221806, 0.10795729515541877, -0.022552186986597788, 0.09151390110658082, 0.033652062855461344, -0.335740395702721, -0.03677214178190168, -0.05030291158722581, 0.029598748515958766, 0.17592745103881627, 0.1572182487230748, -0.038979343602633366, -0.14206069373592203, 0.351246623001394, -0.1267117714309799, -0.10810869699011423, 0.12939498047344386, -0.24637336492471928, -0.12404100890936597, 0.23649758008042618, 0.233211003589843, 0.019605477259028704, -0.1861012002519731, 0.14781784301074888, -0.03957766349028264, 0.1977834277403807, 0.12685981548524328, 0.03163477721308092, 0.19352939516039833, 0.18877832197052027, -0.042679591423698836, 0.043826603038801946, -0.15816379452756207, 0.027538970159366728, -0.41460797045978587, -0.10572748121090367, -0.014167383988387882, 0.12110776788218312, -0.04690267927923872, -0.03571391402677234, 0.3098278139584831, 0.004791849309445492, 0.3538681921815234, 0.0264969897015752, 0.2580880096514842, 0.08632593508238122, -0.013727196678935018, 0.09533572904432991, 0.2716758152935654, 0.18801434446192747, 0.08964720292216433, -0.2860400015430059, -0.003046676145666944, 0.020092866157314607] |
708.0183 | First-principles thermal equation of state and thermoelasticity for hcp
Fe under high pressures | We investigate the equation of state and elastic properties of nonmagnetic
hcp iron at high pressures and high temperatures using the first principles
linear response linear-muffin-tin-orbital method in the generalized-gradient
approximation. We calculate the Helmholtz free energy as a function of volume,
temperature, and volume-constrained strain, including the electronic excitation
contributions from band structures and lattice vibrational contributions from
quasi-harmonic lattice dynamics. We perform detailed investigations on the
behavior of elastic moduli and equation of state properties as a function of
temperature and pressure, including the pressure-volume equation of state, bulk
modulus, the thermal expansion coefficient, the Gruneisen ratio, and the shock
Hugoniots. A detailed comparison has been made with available experimental
measurements and theoretical predictions.
| cond-mat.other | we investigate the equation of state and elastic properties of nonmagnetic hcp iron at high pressures and high temperatures using the first principles linear response linearmuffintinorbital method in the generalizedgradient approximation we calculate the helmholtz free energy as a function of volume temperature and volumeconstrained strain including the electronic excitation contributions from band structures and lattice vibrational contributions from quasiharmonic lattice dynamics we perform detailed investigations on the behavior of elastic moduli and equation of state properties as a function of temperature and pressure including the pressurevolume equation of state bulk modulus the thermal expansion coefficient the gruneisen ratio and the shock hugoniots a detailed comparison has been made with available experimental measurements and theoretical predictions | [['we', 'investigate', 'the', 'equation', 'of', 'state', 'and', 'elastic', 'properties', 'of', 'nonmagnetic', 'hcp', 'iron', 'at', 'high', 'pressures', 'and', 'high', 'temperatures', 'using', 'the', 'first', 'principles', 'linear', 'response', 'linearmuffintinorbital', 'method', 'in', 'the', 'generalizedgradient', 'approximation', 'we', 'calculate', 'the', 'helmholtz', 'free', 'energy', 'as', 'a', 'function', 'of', 'volume', 'temperature', 'and', 'volumeconstrained', 'strain', 'including', 'the', 'electronic', 'excitation', 'contributions', 'from', 'band', 'structures', 'and', 'lattice', 'vibrational', 'contributions', 'from', 'quasiharmonic', 'lattice', 'dynamics', 'we', 'perform', 'detailed', 'investigations', 'on', 'the', 'behavior', 'of', 'elastic', 'moduli', 'and', 'equation', 'of', 'state', 'properties', 'as', 'a', 'function', 'of', 'temperature', 'and', 'pressure', 'including', 'the', 'pressurevolume', 'equation', 'of', 'state', 'bulk', 'modulus', 'the', 'thermal', 'expansion', 'coefficient', 'the', 'gruneisen', 'ratio', 'and', 'the', 'shock', 'hugoniots', 'a', 'detailed', 'comparison', 'has', 'been', 'made', 'with', 'available', 'experimental', 'measurements', 'and', 'theoretical', 'predictions']] | [-0.09392843169063844, 0.13058058298514064, -0.11040666584599891, -0.007974273252204574, -0.04718316696455766, -0.04540649366741679, 0.0902397411490052, 0.37548463342004806, -0.2877785724362937, -0.2669761400119851, 0.055529718093598135, -0.3567725811956515, -0.08890067591083012, 0.14929567428771406, 0.11788631318104935, 0.11005089643154421, 0.018497921986071843, -0.01653054979447163, -0.11784629803953757, -0.1482845945464415, 0.2769053695193524, 0.0742220841870033, 0.32947423935321896, 0.11315025239861731, 0.0780647921271558, -0.0061427411670467395, 0.059507302739175746, 0.05243830543396802, -0.2384618443139861, 0.05420196880935817, 0.2166311721506143, -0.04544333393227887, 0.18440909635532518, -0.4612123574740414, -0.25447144468539745, -0.006553560744264516, 0.03699014456300386, 0.13079095138076308, -0.01236423389717198, -0.19323036579640004, -0.0011963664367393558, -0.14904494292969847, -0.15864641286015255, -0.14360756964567278, -0.022942723477548308, 0.034731901497660395, -0.21389034324614653, 0.182505026414031, -0.03596495825130942, 0.09694408250426681, -0.19771973400151935, -0.20805224498476962, -0.06486084593805196, 0.05891890558093015, 0.04394149713635702, 0.003009482830811035, 0.166275667925847, -0.1320643853356034, -0.04677323243131155, 0.42461134030901154, -0.10377263401209473, -0.10457222268049574, 0.1645451000056647, -0.1427877238421733, -0.07675835918454485, 0.1752019928977022, 0.1572470484092703, 0.09494371082009506, -0.13245631739143923, 0.08602638994664724, 0.0538957427026993, 0.17017726874549005, 0.04766576567761086, 0.025914943965697854, 0.14647250264433437, 0.17332076211961725, -0.04633900613507962, 0.16410905394877773, -0.08593804225855475, -0.05537207767262991, -0.2897301159221037, -0.1545996366205208, -0.2000579809406692, 0.0632547616219983, -0.10237259583061978, -0.21339217951453035, 0.37778114171795035, 0.08532615426269456, 0.1652730748876287, -0.00034720375973345906, 0.2830839897104507, 0.12515015398043786, 0.0011721391367308538, 0.05839080624041501, 0.27374817419732955, 0.23254233371498512, 0.11733068890291555, -0.30179472653002576, 0.05300219274920829, 0.06607884948005385] |
708.0184 | Non-stationary quantum walks on the cycle | We consider quantum walks on the cycle in the non-stationary case where the
`coin' operation is allowed to change at each time step. We characterize, in
algebraic terms, the set of possible state transfers and prove that, as opposed
to the stationary case, it is possible to asymnptotically reach a uniform
distribution among the nodes of the associated graph.
| quant-ph | we consider quantum walks on the cycle in the nonstationary case where the coin operation is allowed to change at each time step we characterize in algebraic terms the set of possible state transfers and prove that as opposed to the stationary case it is possible to asymnptotically reach a uniform distribution among the nodes of the associated graph | [['we', 'consider', 'quantum', 'walks', 'on', 'the', 'cycle', 'in', 'the', 'nonstationary', 'case', 'where', 'the', 'coin', 'operation', 'is', 'allowed', 'to', 'change', 'at', 'each', 'time', 'step', 'we', 'characterize', 'in', 'algebraic', 'terms', 'the', 'set', 'of', 'possible', 'state', 'transfers', 'and', 'prove', 'that', 'as', 'opposed', 'to', 'the', 'stationary', 'case', 'it', 'is', 'possible', 'to', 'asymnptotically', 'reach', 'a', 'uniform', 'distribution', 'among', 'the', 'nodes', 'of', 'the', 'associated', 'graph']] | [-0.14054509406459742, 0.12640678327016788, -0.028390687737806605, 0.031974740426762606, -0.038517581034002116, -0.12423249461752331, 0.10993697209653028, 0.36367743982580203, -0.3097253440526025, -0.23910702238710405, 0.11197295915415703, -0.2626628476869443, -0.09626496536255782, 0.15650846873377933, -0.0730730068773545, 0.04217908801189784, 0.045242570677836394, 0.13971191198276034, -0.011990927864299637, -0.23643171125551252, 0.3279221110880889, 0.021162318489273434, 0.25637037313446914, -0.012355774665122917, 0.12373453972796941, 0.029875482617203016, -0.009629057878869232, 0.0077026051726063775, -0.12055080337914065, 0.027466749547627466, 0.2490632402678502, 0.08801195629599408, 0.2520546758033592, -0.42707573802306736, -0.164765859552627, 0.19115029502427205, 0.11693111245102923, 0.11241535195310054, 0.05819256038702061, -0.22213781765533674, 0.09182555903279191, -0.14833963681654683, -0.14016238958895977, -0.03658625139886963, 0.044099315647678126, 0.001801217408401185, -0.2714263718125635, 0.02160686249684157, 0.06263068079514879, -0.014098612093848401, -0.01172589516299295, -0.04898214438761552, -0.0074319914344633965, 0.1801350265661062, 0.010135335412181529, 0.027297004904790687, 0.09177902252573905, -0.09843900753586585, -0.14246794555721612, 0.40624164924796285, -0.02031123715228048, -0.1991250606751519, 0.1748500497096443, -0.1701811799811649, -0.1465842099218019, 0.06284711297986836, 0.1667131015324387, 0.1259573838063355, -0.08674496935744738, 0.08846068114006153, -0.04890967436648648, 0.09832294590385823, 0.08714308430729754, 0.06219624940723438, 0.14659193604542264, 0.1378299555709136, 0.1832279977549253, 0.2028666877284132, -0.0778186902421896, -0.1661224001556924, -0.3432481151098257, -0.16469047980479382, -0.22720274816524108, 0.07908534207220735, -0.08634640428148298, -0.17007535329923548, 0.44989433762585296, 0.14600127646378402, 0.21129892782532964, 0.07465705929067114, 0.24638801515865108, 0.14546239714500503, 0.011455894626500407, 0.10164649732378793, 0.17313964377510652, 0.12145909117855902, 0.08607593878846743, -0.20008672300148114, 0.11761573028293085, 0.04343033387678964] |
708.0185 | Semiparametric estimation of fractional cointegrating subspaces | We consider a common-components model for multivariate fractional
cointegration, in which the $s\geq1$ components have different memory
parameters. The cointegrating rank may exceed 1. We decompose the true
cointegrating vectors into orthogonal fractional cointegrating subspaces such
that vectors from distinct subspaces yield cointegrating errors with distinct
memory parameters. We estimate each cointegrating subspace separately, using
appropriate sets of eigenvectors of an averaged periodogram matrix of tapered,
differenced observations, based on the first $m$ Fourier frequencies, with $m$
fixed. The angle between the true and estimated cointegrating subspaces is
$o_p(1)$. We use the cointegrating residuals corresponding to an estimated
cointegrating vector to obtain a consistent and asymptotically normal estimate
of the memory parameter for the given cointegrating subspace, using a
univariate Gaussian semiparametric estimator with a bandwidth that tends to
$\infty$ more slowly than $n$. We use these estimates to test for fractional
cointegration and to consistently identify the cointegrating subspaces.
| math.ST stat.TH | we consider a commoncomponents model for multivariate fractional cointegration in which the sgeq1 components have different memory parameters the cointegrating rank may exceed 1 we decompose the true cointegrating vectors into orthogonal fractional cointegrating subspaces such that vectors from distinct subspaces yield cointegrating errors with distinct memory parameters we estimate each cointegrating subspace separately using appropriate sets of eigenvectors of an averaged periodogram matrix of tapered differenced observations based on the first m fourier frequencies with m fixed the angle between the true and estimated cointegrating subspaces is o_p1 we use the cointegrating residuals corresponding to an estimated cointegrating vector to obtain a consistent and asymptotically normal estimate of the memory parameter for the given cointegrating subspace using a univariate gaussian semiparametric estimator with a bandwidth that tends to infty more slowly than n we use these estimates to test for fractional cointegration and to consistently identify the cointegrating subspaces | [['we', 'consider', 'a', 'commoncomponents', 'model', 'for', 'multivariate', 'fractional', 'cointegration', 'in', 'which', 'the', 'sgeq1', 'components', 'have', 'different', 'memory', 'parameters', 'the', 'cointegrating', 'rank', 'may', 'exceed', '1', 'we', 'decompose', 'the', 'true', 'cointegrating', 'vectors', 'into', 'orthogonal', 'fractional', 'cointegrating', 'subspaces', 'such', 'that', 'vectors', 'from', 'distinct', 'subspaces', 'yield', 'cointegrating', 'errors', 'with', 'distinct', 'memory', 'parameters', 'we', 'estimate', 'each', 'cointegrating', 'subspace', 'separately', 'using', 'appropriate', 'sets', 'of', 'eigenvectors', 'of', 'an', 'averaged', 'periodogram', 'matrix', 'of', 'tapered', 'differenced', 'observations', 'based', 'on', 'the', 'first', 'm', 'fourier', 'frequencies', 'with', 'm', 'fixed', 'the', 'angle', 'between', 'the', 'true', 'and', 'estimated', 'cointegrating', 'subspaces', 'is', 'o_p1', 'we', 'use', 'the', 'cointegrating', 'residuals', 'corresponding', 'to', 'an', 'estimated', 'cointegrating', 'vector', 'to', 'obtain', 'a', 'consistent', 'and', 'asymptotically', 'normal', 'estimate', 'of', 'the', 'memory', 'parameter', 'for', 'the', 'given', 'cointegrating', 'subspace', 'using', 'a', 'univariate', 'gaussian', 'semiparametric', 'estimator', 'with', 'a', 'bandwidth', 'that', 'tends', 'to', 'infty', 'more', 'slowly', 'than', 'n', 'we', 'use', 'these', 'estimates', 'to', 'test', 'for', 'fractional', 'cointegration', 'and', 'to', 'consistently', 'identify', 'the', 'cointegrating', 'subspaces']] | [-0.0787068419865545, 0.08811659313173459, -0.07121379713484105, 0.09639640380050236, -0.05890842608876226, -0.16598392125522254, 0.04653536418027826, 0.39125272284118123, -0.29128231401336474, -0.19933731737390362, 0.13381641999515237, -0.2608153427257234, -0.10386048645115514, 0.16599483445603963, -0.086046062181735, 0.08159821024539586, 0.026684070646687843, 0.012018107330964116, -0.13687362934223646, -0.25158804080811575, 0.29385527582751625, 0.01919858803935099, 0.25606940270420286, -0.1811361480254255, 0.16720977377446505, 0.008673333506656174, -0.061006894469536194, -0.01688719684908154, -0.15193035092953697, 0.12978950294278463, 0.26760064398294825, 0.12179279700234133, 0.2960358252248808, -0.3730871001471009, -0.16960417778674988, 0.1910846019601262, 0.13924716649289498, 0.017697540376704162, 0.07630160839276173, -0.2750064339144968, 0.06629832657897883, -0.11933504735219648, -0.09282832509594276, -0.12220482847453314, 0.05145804965931097, 0.007830090080106619, -0.37477922522081625, 0.12215996801778174, 0.06570802026447034, 0.01743991375156997, -0.09289643376825014, -0.23264428421904976, -0.0032188617483706484, 0.0840557690666076, 0.043916619726575463, -0.004956657773246301, 0.06430250474766691, -0.016834245044613044, -0.09340383996874493, 0.26464830086122726, -0.1078412970689152, -0.2848857031406947, 0.1270390980448824, -0.16012273574460473, -0.10157738316135369, 0.07702499447115416, 0.21239838077711728, 0.01483675262257113, -0.11054187307709315, 0.0557717535158013, -0.05538569889562642, 0.18359477693002496, 0.06439637470421625, 0.051738818288599484, 0.14531347172447298, 0.0842518208910955, 0.11380442099808051, 0.11561874719180366, -0.1607014437740506, -0.022603825553501614, -0.30054337261307157, -0.14535190588200853, -0.22853205697735984, 0.030623352967652697, -0.22363587133494603, -0.1672882711727347, 0.3992230671789222, 0.1499321624963238, 0.24019618483647803, 0.13683798375473852, 0.25531156743320343, 0.16932271002173024, 0.020543277463656945, 0.1256252599711336, 0.16673766101566737, 0.1703288597586071, -0.0351340181581776, -0.1770529784027787, 0.0627711517908204, 0.07899360520602673] |
708.0186 | Regional distribution of the prostaglandin E2 receptor EP1 in the rat
brain: accumulation in Purkinje cells of the cerebellum | Prostaglandin E2 (PGE2), is a major prostanoid produced by the activity of
cyclooxygenases (COX) in response to various physiological and pathological
stimuli. PGE2 exerts its effects by activating four specific E-type prostanoid
receptors (EP1, EP2, EP3, and EP4). In the present study, we analyzed the
expression of the PGE2 receptor EP1 (mRNA and protein) in different regions of
the adult rat brain (hippocampus, hypothalamus, striatum, prefrontal cerebral
cortex, parietal cortex, brain stem, and cerebellum) using reverse
transcription- polymerase chain reaction, Western blotting, and
immunohistochemical methods. On a regional basis, levels of EP1 mRNA were the
highest in parietal cortex and cerebellum. At the protein level, we found very
strong expression of EP1 in cerebellum, as revealed by Western blotting
experiments. Furthermore, the present study provides for the first time
evidence that the EP1 receptor is highly expressed in the cerebellum, where the
Purkinje cells displayed very high immunolabeling of their perikaryon and
dendrites, as observed in the immunohistochemical analysis. Results from the
present study indicate that the EP1 prostanoid receptor is expressed in
specific neuronal populations, which possibly determine the region-specific
response to PGE2.
| q-bio.TO | prostaglandin e2 pge2 is a major prostanoid produced by the activity of cyclooxygenases cox in response to various physiological and pathological stimuli pge2 exerts its effects by activating four specific etype prostanoid receptors ep1 ep2 ep3 and ep4 in the present study we analyzed the expression of the pge2 receptor ep1 mrna and protein in different regions of the adult rat brain hippocampus hypothalamus striatum prefrontal cerebral cortex parietal cortex brain stem and cerebellum using reverse transcription polymerase chain reaction western blotting and immunohistochemical methods on a regional basis levels of ep1 mrna were the highest in parietal cortex and cerebellum at the protein level we found very strong expression of ep1 in cerebellum as revealed by western blotting experiments furthermore the present study provides for the first time evidence that the ep1 receptor is highly expressed in the cerebellum where the purkinje cells displayed very high immunolabeling of their perikaryon and dendrites as observed in the immunohistochemical analysis results from the present study indicate that the ep1 prostanoid receptor is expressed in specific neuronal populations which possibly determine the regionspecific response to pge2 | [['prostaglandin', 'e2', 'pge2', 'is', 'a', 'major', 'prostanoid', 'produced', 'by', 'the', 'activity', 'of', 'cyclooxygenases', 'cox', 'in', 'response', 'to', 'various', 'physiological', 'and', 'pathological', 'stimuli', 'pge2', 'exerts', 'its', 'effects', 'by', 'activating', 'four', 'specific', 'etype', 'prostanoid', 'receptors', 'ep1', 'ep2', 'ep3', 'and', 'ep4', 'in', 'the', 'present', 'study', 'we', 'analyzed', 'the', 'expression', 'of', 'the', 'pge2', 'receptor', 'ep1', 'mrna', 'and', 'protein', 'in', 'different', 'regions', 'of', 'the', 'adult', 'rat', 'brain', 'hippocampus', 'hypothalamus', 'striatum', 'prefrontal', 'cerebral', 'cortex', 'parietal', 'cortex', 'brain', 'stem', 'and', 'cerebellum', 'using', 'reverse', 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708.0187 | Wide therapeutic time window for nimesulide neuroprotection in a model
of transient focal cerebral ischemia in the rat | Results from several studies indicate that cyclooxygenase-2 (COX-2) is
involved in ischemic brain injury. The purpose of this study was to evaluate
the neuroprotective effects of the selective COX-2 inhibitor nimesulide on
cerebral infarction and neurological deficits in a standardized model of
transient focal cerebral ischemia in rats. Three doses of nimesulide (3, 6 and
12 mg/kg; i.p.) or vehicle were administered immediately after stroke and
additional doses were given at 6, 12, 24, 36 and 48 h after ischemia. In other
set of experiments, the effect of nimesulide was studied in a situation in
which its first administration was delayed for 3-24 h after ischemia. Total,
cortical and subcortical infarct volumes and functional outcome (assessed by
neurological deficit score and rotarod performance) were determined 3 days
after ischemia. The effect of nimesulide on prostaglandin E(2) (PGE(2)) levels
in the injured brain was also investigated. Nimesulide dose-dependently reduced
infarct volume and improved functional recovery when compared to vehicle. Of
interest is the finding that neuroprotection conferred by nimesulide (reduction
of infarct size and neurological deficits and improvement of rotarod
performance) was also observed when treatment was delayed until 24 h after
ischemia. Further, administration of nimesulide in a delayed treatment paradigm
completely abolished PGE(2) accumulation in the postischemic brain, suggesting
that COX-2 inhibition is a promising therapeutic strategy for cerebral ischemia
to target the late-occurring inflammatory events which amplify initial damage.
| q-bio.NC q-bio.TO | results from several studies indicate that cyclooxygenase2 cox2 is involved in ischemic brain injury the purpose of this study was to evaluate the neuroprotective effects of the selective cox2 inhibitor nimesulide on cerebral infarction and neurological deficits in a standardized model of transient focal cerebral ischemia in rats three doses of nimesulide 3 6 and 12 mgkg ip or vehicle were administered immediately after stroke and additional doses were given at 6 12 24 36 and 48 h after ischemia in other set of experiments the effect of nimesulide was studied in a situation in which its first administration was delayed for 324 h after ischemia total cortical and subcortical infarct volumes and functional outcome assessed by neurological deficit score and rotarod performance were determined 3 days after ischemia the effect of nimesulide on prostaglandin e2 pge2 levels in the injured brain was also investigated nimesulide dosedependently reduced infarct volume and improved functional recovery when compared to vehicle of interest is the finding that neuroprotection conferred by nimesulide reduction of infarct size and neurological deficits and improvement of rotarod performance was also observed when treatment was delayed until 24 h after ischemia further administration of nimesulide in a delayed treatment paradigm completely abolished pge2 accumulation in the postischemic brain suggesting that cox2 inhibition is a promising therapeutic strategy for cerebral ischemia to target the lateoccurring inflammatory events which amplify initial damage | [['results', 'from', 'several', 'studies', 'indicate', 'that', 'cyclooxygenase2', 'cox2', 'is', 'involved', 'in', 'ischemic', 'brain', 'injury', 'the', 'purpose', 'of', 'this', 'study', 'was', 'to', 'evaluate', 'the', 'neuroprotective', 'effects', 'of', 'the', 'selective', 'cox2', 'inhibitor', 'nimesulide', 'on', 'cerebral', 'infarction', 'and', 'neurological', 'deficits', 'in', 'a', 'standardized', 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708.0188 | First principles investigations of the electronic, magnetic and chemical
bonding properties of CeTSn (T=Rh,Ru) | The electronic structures of CeRhSn and CeRuSn are self-consistently
calculated within density functional theory using the local spin density
approximation for exchange and correlation. In agreement with experimental
findings, the analyses of the electronic structures and of the chemical bonding
properties point to the absence of magnetization within the mixed valent Rh
based system while a finite magnetic moment is observed for trivalent cerium
within the Ru-based stannide, which contains both trivalent and intermediate
valent Ce.
| cond-mat.str-el cond-mat.mtrl-sci | the electronic structures of cerhsn and cerusn are selfconsistently calculated within density functional theory using the local spin density approximation for exchange and correlation in agreement with experimental findings the analyses of the electronic structures and of the chemical bonding properties point to the absence of magnetization within the mixed valent rh based system while a finite magnetic moment is observed for trivalent cerium within the rubased stannide which contains both trivalent and intermediate valent ce | [['the', 'electronic', 'structures', 'of', 'cerhsn', 'and', 'cerusn', 'are', 'selfconsistently', 'calculated', 'within', 'density', 'functional', 'theory', 'using', 'the', 'local', 'spin', 'density', 'approximation', 'for', 'exchange', 'and', 'correlation', 'in', 'agreement', 'with', 'experimental', 'findings', 'the', 'analyses', 'of', 'the', 'electronic', 'structures', 'and', 'of', 'the', 'chemical', 'bonding', 'properties', 'point', 'to', 'the', 'absence', 'of', 'magnetization', 'within', 'the', 'mixed', 'valent', 'rh', 'based', 'system', 'while', 'a', 'finite', 'magnetic', 'moment', 'is', 'observed', 'for', 'trivalent', 'cerium', 'within', 'the', 'rubased', 'stannide', 'which', 'contains', 'both', 'trivalent', 'and', 'intermediate', 'valent', 'ce']] | [-0.1386535655413019, 0.1814664521792254, -0.0521175069979539, 0.055084562721037254, 0.058158132027050384, -0.06693981195138277, 0.0897819780167131, 0.3559374710741012, -0.25117340085929946, -0.31548160388085406, -0.014205246472939555, -0.3483097438798531, -0.0895894978955192, 0.09396753706019617, 0.13680441812673388, -0.01982201786564761, -0.0244830152001477, 0.02357590129586721, -0.1380643416196108, -0.18502560184386216, 0.2864596103134222, 0.037650078289995066, 0.28816810497818024, 0.08591327277673899, 0.0248795999815277, 0.05100735076274233, 0.10331315962034032, 0.08080243466323928, -0.10649231899113051, 0.1426322065955518, 0.2739804757262678, -0.0427270239145544, 0.15517965272853249, -0.4620777001163285, -0.20351047397860766, -0.035690242222412245, 0.05096497224325216, 0.10874445545395199, -0.09902380320157758, -0.24446269119844624, 0.10252873984312541, -0.13351463682116255, -0.1118171344462194, -0.11093860280111824, -0.04005783150511745, 0.0681901478735534, -0.26385363514878246, 0.138751802181727, 0.014926633791458843, 0.11683758170540004, -0.16528555207983836, -0.19264049942476527, -0.15100202692280473, 0.06781493905490558, -0.012931932569603975, 0.018497514895371797, 0.1273474263970887, -0.08265926640773327, -0.0699166394333588, 0.3665138829107347, -0.06766137551504041, -0.0768164647651199, 0.167535774737572, -0.18712694570422173, -0.16557543501135355, 0.14782653944444304, 0.06426592954238386, 0.10412429570906649, -0.12694225911247103, 0.12797212225421772, 0.004877359934126664, 0.17733555285782418, 0.019540641711117995, 0.06919583028684428, 0.20326473617828206, 0.1595239592532284, -0.00038135797398066834, 0.10826858117147103, -0.12024709121569206, -0.1489708940314717, -0.22871790366786482, -0.15803233915204673, -0.18735632822407702, 0.020016627539390403, -0.0931443589253927, -0.2262708330526948, 0.3916688399315861, 0.08189332102866549, 0.1535727327756927, -0.07462043658444217, 0.20532070434235625, 0.07067941598545172, 0.04595966178825811, 0.048203986364808916, 0.19475164659027205, 0.24186969868299601, 0.09282036600818269, -0.31353616619507146, 0.1452833569522849, 0.058524859131706] |
708.0189 | Pulsar model of the high energy phenomenology of LS 5039 | Under the assumption that LS 5039 is a system composed by a pulsar rotating
around an O6.5V star in a $\sim 3.9$ day orbit, we present the results of a
theoretical modeling of the high energy phenomenology observed by the High
Energy Stereoscopy Array (H.E.S.S.). This model (including detailed account of
the system geometry, Klein-Nishina inverse Compton, $\gamma$-$\gamma$
absorption, and cascading) is able to describe well the rich observed
phenomenology found in the system at all timescales, both flux and
spectrum-wise.
| astro-ph | under the assumption that ls 5039 is a system composed by a pulsar rotating around an o65v star in a sim 39 day orbit we present the results of a theoretical modeling of the high energy phenomenology observed by the high energy stereoscopy array hess this model including detailed account of the system geometry kleinnishina inverse compton gammagamma absorption and cascading is able to describe well the rich observed phenomenology found in the system at all timescales both flux and spectrumwise | [['under', 'the', 'assumption', 'that', 'ls', '5039', 'is', 'a', 'system', 'composed', 'by', 'a', 'pulsar', 'rotating', 'around', 'an', 'o65v', 'star', 'in', 'a', 'sim', '39', 'day', 'orbit', 'we', 'present', 'the', 'results', 'of', 'a', 'theoretical', 'modeling', 'of', 'the', 'high', 'energy', 'phenomenology', 'observed', 'by', 'the', 'high', 'energy', 'stereoscopy', 'array', 'hess', 'this', 'model', 'including', 'detailed', 'account', 'of', 'the', 'system', 'geometry', 'kleinnishina', 'inverse', 'compton', 'gammagamma', 'absorption', 'and', 'cascading', 'is', 'able', 'to', 'describe', 'well', 'the', 'rich', 'observed', 'phenomenology', 'found', 'in', 'the', 'system', 'at', 'all', 'timescales', 'both', 'flux', 'and', 'spectrumwise']] | [-0.11982845659949817, 0.11826282540732791, -0.05068969446583651, 0.12896743047313067, -0.048982762097148226, -0.11363947454374283, 0.0039708047261228785, 0.35958915956362036, -0.22292566930409521, -0.3557780442526564, 0.055581148833152835, -0.2856834164587781, -0.06401659809635021, 0.21372744948312175, 0.0037627569407050034, -0.0070552917779423295, 0.09926923072634963, -0.028097446550964376, -0.03669968288450036, -0.15982993243360397, 0.25740000726655127, 0.1465799679135671, 0.21162281912984326, 0.03764901037720847, 0.10493094556295546, -0.015382368411519565, 0.004213279078248889, -0.01621846341295168, -0.10907818545574628, 0.04431510993745178, 0.2037418903550133, 0.08111596638336778, 0.1697422686673235, -0.38146856053499506, -0.2261522333137691, 0.042684581503272055, 0.12381446357321693, 0.01985233880695887, -0.03871543066343293, -0.28169485164107755, 0.04932598746818258, -0.24363274161005394, -0.17002518698573113, 0.02853946320246905, 0.03433658844442107, 0.01119999549118802, -0.21686565056443213, 0.05363745426293463, 0.07504436886665644, 0.05726276104105636, -0.13017326293047518, -0.07370114913937868, 0.0006836320069851353, -0.0008486180217005312, 0.06588148702139733, 0.008591783134033904, 0.1164230040711118, -0.13674897070450243, -0.0760885155039432, 0.4057612261734903, -0.07405147495737766, -0.06919507237616926, 0.20063512361957692, -0.2080717319797259, -0.1664102423877921, 0.24083999146241694, 0.17650593636208214, 0.07959218372125179, -0.17773248360026628, 0.06226325651368825, -0.03410055295971688, 0.21727134838001802, -0.014477835179422981, 0.016786581312771887, 0.30101402001455424, 0.22350789116535452, -0.01931111260782927, 0.1360355749638984, -0.21510277886409312, -0.03350459804642014, -0.2929041659925133, -0.055271890363655984, -0.11924202209193027, 0.08909655206371099, -0.08116151078102121, -0.09977343609789387, 0.3983117706724443, 0.12259616679511964, 0.21502571067539974, -0.014660271693719551, 0.30029000736540185, 0.14662696262821556, 0.014319228241220117, 0.11215046446304769, 0.3127329258597456, 0.12521895729587412, 0.156933935044799, -0.24910500387195497, 0.037884510203730314, -0.01742533887736499] |
708.019 | GD 99 - an unusual, rarely observed DAV white dwarf | New observations of GD 99 are analysed. The unusual pulsation behaviour,
showing both long and short periods, has been confirmed. All the available
periods show a grouping of short and long period modes with roughly regular
spacing. If we interpret the groups separately, a binary nature can be a
possible explanation as in the similar cases of WD 2350-0054 and G29-38.
| astro-ph | new observations of gd 99 are analysed the unusual pulsation behaviour showing both long and short periods has been confirmed all the available periods show a grouping of short and long period modes with roughly regular spacing if we interpret the groups separately a binary nature can be a possible explanation as in the similar cases of wd 23500054 and g2938 | [['new', 'observations', 'of', 'gd', '99', 'are', 'analysed', 'the', 'unusual', 'pulsation', 'behaviour', 'showing', 'both', 'long', 'and', 'short', 'periods', 'has', 'been', 'confirmed', 'all', 'the', 'available', 'periods', 'show', 'a', 'grouping', 'of', 'short', 'and', 'long', 'period', 'modes', 'with', 'roughly', 'regular', 'spacing', 'if', 'we', 'interpret', 'the', 'groups', 'separately', 'a', 'binary', 'nature', 'can', 'be', 'a', 'possible', 'explanation', 'as', 'in', 'the', 'similar', 'cases', 'of', 'wd', '23500054', 'and', 'g2938']] | [-0.1706551175409307, 0.1665826563257724, -0.10475973218368988, 0.13307343111373485, -0.09734072973175595, -0.14088519140301894, 0.06322036387088398, 0.43392668968687453, -0.23412227069493383, -0.31089020759488145, 0.13515107060666195, -0.24383224258684397, -0.11640354940512528, 0.22377379353468616, -0.05758745603573819, -0.017546234481657545, 0.13288274787676832, 0.04338814138124387, -0.05050898368062917, -0.29298023028920095, 0.16426507050249103, 0.0313309287535958, 0.1811843547038734, -0.04135876496826919, 0.03651571839582175, -0.035789569032688935, -0.05465734084379316, 0.0016383327216014246, -0.09209458737944563, 0.00804214774010082, 0.23215486407279967, 0.06869649169578528, 0.2090685503402104, -0.36958951186388733, -0.22687418676602344, 0.061759166264285646, 0.15730826127692127, 0.08682516608387232, 0.002729642391204834, -0.23141400785922694, 0.09591705362933377, -0.1947279400502642, -0.13844588712478678, -0.03732808600179851, 0.1459370769560337, 0.08887386817174653, -0.21047900140595932, 0.09180006157063568, 0.08642128273689499, 0.10103340142692711, -0.11302624413898836, -0.13563199273000162, -0.04378513929744562, 0.14039952389430255, 0.11758109625079669, -0.012064296302075188, -0.02482215848285705, -0.0078109983510027325, -0.10808937674931561, 0.370245152960221, -0.1223095750863043, -0.03376714804908261, 0.26024300732145395, -0.1821908669391026, -0.13324402776391556, 0.14436411866918206, 0.10209138843541345, 0.1360180284672727, -0.16697286657678584, -0.0032544444266629094, -0.04103854674419078, 0.23245311794647325, 0.11351780272865047, 0.07798748115698496, 0.32662929861495893, 0.18719370822849063, -0.052162012106661375, 0.09557267878941882, -0.15809274154404798, -0.03409159049333539, -0.2368636911463303, -0.10953063811854614, -0.13632147947209888, 0.056341298312569656, -0.05724019691430537, -0.1113451763560685, 0.4067917569540441, 0.05538682023373743, 0.2379270234145224, 0.04550129012204707, 0.2067513832822442, 0.0932131434926608, 0.09461935616491246, 0.11090834957237045, 0.26184913658847414, 0.1388418528561791, 0.05218735868111253, -0.19079276889873048, 0.08506604383389155, -0.02784724854088078] |
708.0191 | Engineering exotic phases for topologically-protected quantum
computation by emulating quantum dimer models | We use a nonperturbative extended contractor renormalization (ENCORE) method
for engineering quantum devices for the implementation of topologically
protected quantum bits described by an effective quantum dimer model on the
triangular lattice. By tuning the couplings of the device, topological
protection might be achieved if the ratio between effective two-dimer
interactions and flip amplitudes lies in the liquid phase of the phase diagram
of the quantum dimer model. For a proposal based on a quantum Josephson
junction array [L. B. Ioffe {\it et al.}, Nature (London) {\bf 415}, 503
(2002)] our results show that optimal operational temperatures below 1 mK can
only be obtained if extra interactions and dimer flips, which are not present
in the standard quantum dimer model and involve three or four dimers, are
included. It is unclear if these extra terms in the quantum dimer Hamiltonian
destroy the liquid phase needed for quantum computation. Minimizing the effects
of multi-dimer terms would require energy scales in the nano-Kelvin regime. An
alternative implementation based on cold atomic or molecular gases loaded into
optical lattices is also discussed, and it is shown that the small energy
scales involved--implying long operational times--make such a device
impractical. Given the many orders of magnitude between bare couplings in
devices, and the topological gap, the realization of topological phases in
quantum devices requires careful engineering and large bare interaction scales.
| cond-mat.other cond-mat.str-el | we use a nonperturbative extended contractor renormalization encore method for engineering quantum devices for the implementation of topologically protected quantum bits described by an effective quantum dimer model on the triangular lattice by tuning the couplings of the device topological protection might be achieved if the ratio between effective twodimer interactions and flip amplitudes lies in the liquid phase of the phase diagram of the quantum dimer model for a proposal based on a quantum josephson junction array l b ioffe it et al nature london bf 415 503 2002 our results show that optimal operational temperatures below 1 mk can only be obtained if extra interactions and dimer flips which are not present in the standard quantum dimer model and involve three or four dimers are included it is unclear if these extra terms in the quantum dimer hamiltonian destroy the liquid phase needed for quantum computation minimizing the effects of multidimer terms would require energy scales in the nanokelvin regime an alternative implementation based on cold atomic or molecular gases loaded into optical lattices is also discussed and it is shown that the small energy scales involvedimplying long operational timesmake such a device impractical given the many orders of magnitude between bare couplings in devices and the topological gap the realization of topological phases in quantum devices requires careful engineering and large bare interaction scales | [['we', 'use', 'a', 'nonperturbative', 'extended', 'contractor', 'renormalization', 'encore', 'method', 'for', 'engineering', 'quantum', 'devices', 'for', 'the', 'implementation', 'of', 'topologically', 'protected', 'quantum', 'bits', 'described', 'by', 'an', 'effective', 'quantum', 'dimer', 'model', 'on', 'the', 'triangular', 'lattice', 'by', 'tuning', 'the', 'couplings', 'of', 'the', 'device', 'topological', 'protection', 'might', 'be', 'achieved', 'if', 'the', 'ratio', 'between', 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708.0192 | Motion by Stopping: Rectifying Brownian Motion of Non-spherical
Particles | We show that Brownian motion is spatially not symmetric for mesoscopic
particles embedded in a fluid if the particle is not in thermal equilibrium and
its shape is not spherical. In view of applications on molecular motors in
biological cells, we sustain non-equilibrium by stopping a non-spherical
particle at periodic sites along a filament. Molecular dynamics simulations in
a Lennard-Jones fluid demonstrate that directed motion is possible without a
ratchet potential or temperature gradients if the asymmetric non-equilibrium
relaxation process is hindered by external stopping. Analytic calculations in
the ideal gas limit show that motion even against a fluid drift is possible and
that the direction of motion can be controlled by the shape of the particle,
which is completely characterized by tensorial Minkowski functionals.
| cond-mat.soft | we show that brownian motion is spatially not symmetric for mesoscopic particles embedded in a fluid if the particle is not in thermal equilibrium and its shape is not spherical in view of applications on molecular motors in biological cells we sustain nonequilibrium by stopping a nonspherical particle at periodic sites along a filament molecular dynamics simulations in a lennardjones fluid demonstrate that directed motion is possible without a ratchet potential or temperature gradients if the asymmetric nonequilibrium relaxation process is hindered by external stopping analytic calculations in the ideal gas limit show that motion even against a fluid drift is possible and that the direction of motion can be controlled by the shape of the particle which is completely characterized by tensorial minkowski functionals | [['we', 'show', 'that', 'brownian', 'motion', 'is', 'spatially', 'not', 'symmetric', 'for', 'mesoscopic', 'particles', 'embedded', 'in', 'a', 'fluid', 'if', 'the', 'particle', 'is', 'not', 'in', 'thermal', 'equilibrium', 'and', 'its', 'shape', 'is', 'not', 'spherical', 'in', 'view', 'of', 'applications', 'on', 'molecular', 'motors', 'in', 'biological', 'cells', 'we', 'sustain', 'nonequilibrium', 'by', 'stopping', 'a', 'nonspherical', 'particle', 'at', 'periodic', 'sites', 'along', 'a', 'filament', 'molecular', 'dynamics', 'simulations', 'in', 'a', 'lennardjones', 'fluid', 'demonstrate', 'that', 'directed', 'motion', 'is', 'possible', 'without', 'a', 'ratchet', 'potential', 'or', 'temperature', 'gradients', 'if', 'the', 'asymmetric', 'nonequilibrium', 'relaxation', 'process', 'is', 'hindered', 'by', 'external', 'stopping', 'analytic', 'calculations', 'in', 'the', 'ideal', 'gas', 'limit', 'show', 'that', 'motion', 'even', 'against', 'a', 'fluid', 'drift', 'is', 'possible', 'and', 'that', 'the', 'direction', 'of', 'motion', 'can', 'be', 'controlled', 'by', 'the', 'shape', 'of', 'the', 'particle', 'which', 'is', 'completely', 'characterized', 'by', 'tensorial', 'minkowski', 'functionals']] | [-0.11209933652775363, 0.22301279416680336, -0.1094422219581902, 0.009585158655027045, -0.02572273188084364, -0.11855662321671843, -0.011844355560839176, 0.4165697598159313, -0.29420658788084986, -0.23202317387610674, 0.05124934069626033, -0.22321902050822973, -0.13827155192382634, 0.15260582587029786, -0.03725589022459462, 0.013644639029633254, 0.0610488667935133, -0.0019374443609267472, 0.027941106718964874, -0.15826625901833177, 0.2373893707692623, 0.04144300918281078, 0.23001891748048364, 0.048714195135980846, 0.12645122419670224, -0.01608136663585901, 0.03547077701613307, 0.11174266958236695, -0.1470754857447464, 0.03232432808435988, 0.16860345453023912, 0.0020215517543256283, 0.23478890063427388, -0.4835815384835005, -0.25572033469378946, 0.1010844412073493, 0.17355986274406313, 0.13769321000110357, -0.08620666357968003, -0.24545799118280412, 0.04882494654599577, -0.1360288671143353, -0.19374550627171994, -0.0777647595219314, 0.08607530798949302, 0.08649090163782239, -0.2459835547618568, 0.1473529345523566, 0.09551882318314164, 0.04897346152499085, -0.08782932624127716, -0.03312407422065735, -0.03680847612395883, 0.053091704729013145, -0.00281920169130899, 0.013495404195040464, 0.2989756492190063, -0.17435404866933824, -0.10806428541615605, 0.4306536922603846, -0.05902521878760308, -0.29748403138667345, 0.22345796216279268, -0.17120428770408033, -0.06872114303335547, 0.2003776008486748, 0.12123993961326777, 0.10906075542792677, -0.20435780360177158, 0.0946702701477334, -0.0312047677077353, 0.14056087296176703, 0.07610496121644973, -0.06807058617472649, 0.2801076651662588, 0.15575652331858875, 0.09288782737404108, 0.1482999693066813, -0.09027397990785539, -0.17478347384277731, -0.2784645473137498, -0.16880223006755113, -0.24644829070568083, 0.07478037915786262, -0.08128164010657929, -0.1693884385563433, 0.3293862256146967, 0.0969442650526762, 0.1425522535443306, -0.002304494323208928, 0.2813181043229997, 0.07617682099342346, 0.004436291571706533, 0.08975535153783858, 0.2366688889954239, 0.11748893842939287, 0.09105507554486394, -0.26747633958049116, 0.07816325303167104, 0.045104757472872736] |
708.0193 | UV excess and AGB evolution in elliptical-galaxy stellar populations | The puzzling origin of the ``UV-upturn'' phenomenon, observed in some
elliptical galaxies, has recently been settled by identifying hot HB stars as
main contributors to galaxy ultraviolet luminosity excess. While a blue HB
morphology seems a natural characteristic of metal-poor stellar populations,
its appearence in metal-rich systems, often coupled with a poorer rate of
planetary nebulae per unit galaxy luminosity, might be calling for an intimate
connection between UV excess and AGB properties in early-type galaxies. In this
work, we want to briefly assess this issue, relying on infrared surface
brightness fluctuations as a powerful tool to trace AGB properties in external
galaxies with unresolved stellar populations.
| astro-ph | the puzzling origin of the uvupturn phenomenon observed in some elliptical galaxies has recently been settled by identifying hot hb stars as main contributors to galaxy ultraviolet luminosity excess while a blue hb morphology seems a natural characteristic of metalpoor stellar populations its appearence in metalrich systems often coupled with a poorer rate of planetary nebulae per unit galaxy luminosity might be calling for an intimate connection between uv excess and agb properties in earlytype galaxies in this work we want to briefly assess this issue relying on infrared surface brightness fluctuations as a powerful tool to trace agb properties in external galaxies with unresolved stellar populations | [['the', 'puzzling', 'origin', 'of', 'the', 'uvupturn', 'phenomenon', 'observed', 'in', 'some', 'elliptical', 'galaxies', 'has', 'recently', 'been', 'settled', 'by', 'identifying', 'hot', 'hb', 'stars', 'as', 'main', 'contributors', 'to', 'galaxy', 'ultraviolet', 'luminosity', 'excess', 'while', 'a', 'blue', 'hb', 'morphology', 'seems', 'a', 'natural', 'characteristic', 'of', 'metalpoor', 'stellar', 'populations', 'its', 'appearence', 'in', 'metalrich', 'systems', 'often', 'coupled', 'with', 'a', 'poorer', 'rate', 'of', 'planetary', 'nebulae', 'per', 'unit', 'galaxy', 'luminosity', 'might', 'be', 'calling', 'for', 'an', 'intimate', 'connection', 'between', 'uv', 'excess', 'and', 'agb', 'properties', 'in', 'earlytype', 'galaxies', 'in', 'this', 'work', 'we', 'want', 'to', 'briefly', 'assess', 'this', 'issue', 'relying', 'on', 'infrared', 'surface', 'brightness', 'fluctuations', 'as', 'a', 'powerful', 'tool', 'to', 'trace', 'agb', 'properties', 'in', 'external', 'galaxies', 'with', 'unresolved', 'stellar', 'populations']] | [-0.028931214743964026, 0.09139848612458336, -0.11024710620105023, 0.1837528728745077, -0.1594625199735861, -0.052200084839399176, 0.04435380940786868, 0.480521667513683, -0.10001891955437366, -0.3472647262893826, -0.006020680723807592, -0.2928968094611349, -0.06881102483075495, 0.16056154785616863, -0.12655105129336922, -0.055608181548892376, 0.03933708841812353, -0.11788342423545563, 0.007560878317524618, -0.2929855388650131, 0.3014195727828507, 0.08694399350511006, 0.12959716400505852, -0.0679086971697267, 0.008337879649180676, -0.1475053601376016, -0.07051654501217548, -0.05800551388882727, -0.1374846819873081, 0.034819819103049494, 0.2910277730846238, 0.12703516206564816, 0.26577286674558387, -0.3535705721615074, -0.22621208747901092, 0.10931878339359972, 0.2828395163649084, -0.009873466655420505, -0.14653033984359354, -0.21863717253311216, 0.030732995856588133, -0.14928548063682479, -0.2600079758014425, 0.11632691474770691, 0.07108940078798577, 0.00280873945894625, -0.15310808545344065, 0.15812707699891876, 0.06422777173640294, 0.17313460426875085, -0.07367202483425482, -0.09231838648573051, -0.09221146619356065, 0.0688843191427257, 0.06559546521612417, 0.05464183131372121, 0.1855124835508101, -0.15653745001007882, 0.0002827706777220853, 0.396494454887008, -0.0771058973743119, 0.03857374178187456, 0.2934156387226186, -0.2052951155918015, -0.21386983567657314, 0.06767875721643322, 0.1504941156556151, 0.0954797724610038, -0.24543027991481195, 0.025004777824336164, -0.004634394619404991, 0.19669568829812875, 0.04927580567102914, 0.14243574126946704, 0.39903238048411416, 0.11617307568613057, -0.0059524193432216885, 0.11308904414861594, -0.1790146031351673, -0.029965513825925747, -0.17656193166170445, -0.09935973026728798, -0.09808624622240122, 0.12795038419671217, -0.12568863657089363, -0.14700183539572997, 0.31756173703976187, 0.0904273458486684, 0.24114132493464538, -0.005125788323337508, 0.3229486816758551, 0.07664352973757713, 0.13921295660417352, 0.11990310001039059, 0.2819652020570574, 0.25006327371844134, 0.06412668445008311, -0.29684146323946314, 0.1280396265177944, -0.01644448610893059] |
708.0194 | Isomer triggering via nuclear excitation by electron capture | Triggering of long-lived nuclear isomeric states via coupling to the atomic
shells in the process of nuclear excitation by electron capture (NEEC) is
studied. NEEC occurring in highly-charged ions can excite the isomeric state to
a triggering level that subsequently decays to the ground state. We present
total cross sections for NEEC isomer triggering considering experimentally
confirmed low-lying triggering levels and reaction rates based on realistic
experimental parameters in ion storage rings. A comparison with other isomer
triggering mechanisms shows that, among these, NEEC is the most efficient.
| nucl-th physics.atom-ph | triggering of longlived nuclear isomeric states via coupling to the atomic shells in the process of nuclear excitation by electron capture neec is studied neec occurring in highlycharged ions can excite the isomeric state to a triggering level that subsequently decays to the ground state we present total cross sections for neec isomer triggering considering experimentally confirmed lowlying triggering levels and reaction rates based on realistic experimental parameters in ion storage rings a comparison with other isomer triggering mechanisms shows that among these neec is the most efficient | [['triggering', 'of', 'longlived', 'nuclear', 'isomeric', 'states', 'via', 'coupling', 'to', 'the', 'atomic', 'shells', 'in', 'the', 'process', 'of', 'nuclear', 'excitation', 'by', 'electron', 'capture', 'neec', 'is', 'studied', 'neec', 'occurring', 'in', 'highlycharged', 'ions', 'can', 'excite', 'the', 'isomeric', 'state', 'to', 'a', 'triggering', 'level', 'that', 'subsequently', 'decays', 'to', 'the', 'ground', 'state', 'we', 'present', 'total', 'cross', 'sections', 'for', 'neec', 'isomer', 'triggering', 'considering', 'experimentally', 'confirmed', 'lowlying', 'triggering', 'levels', 'and', 'reaction', 'rates', 'based', 'on', 'realistic', 'experimental', 'parameters', 'in', 'ion', 'storage', 'rings', 'a', 'comparison', 'with', 'other', 'isomer', 'triggering', 'mechanisms', 'shows', 'that', 'among', 'these', 'neec', 'is', 'the', 'most', 'efficient']] | [-0.08788221862050705, 0.2325179123806513, -0.005005073043403999, 0.12159118699303856, 0.06059773852625354, -0.12661699114621364, 0.0702594086747426, 0.401100856421346, -0.1786959231368118, -0.2976396182467314, -0.014962388066289184, -0.27695224253164435, 0.01963498856110329, 0.16556463966315443, 0.09901668009644543, 0.03150062525607857, 0.07730104428959418, 0.018471604329533875, 0.004755090789827095, -0.14219840758861127, 0.274876193524423, 0.17086772685235535, 0.2524283798887733, 0.11703411837383597, 0.050560977923768485, -0.04102823692995695, 0.07016122003022413, -0.11604442609876225, -0.1172319310778469, 0.08837259953129846, 0.3191316572103295, 0.05513928122871386, 0.16872986596585673, -0.5034553593193943, -0.1776260720137295, 0.07977992325587283, 0.15590714034624398, 0.16606435014083135, -0.12775130564180223, -0.2979294531370132, 0.048494186682298525, -0.20557593696602536, -0.0883371603241275, -0.12232694602359763, 0.07249219020013697, 0.031289544041183864, -0.2826067390216684, 0.08579349293392045, -0.019454075303987007, 0.018297931909645824, -0.1719763614687095, -0.1379829450637441, -0.06566183282252909, 0.0510140655784529, 0.04123911061767351, -0.031047156677893574, 0.26576984460486774, -0.07855305644493042, -0.16469746923857284, 0.34678388307326136, -0.007252345295538279, -0.07214785536581819, 0.18603191005372952, -0.17114147483185993, -0.1277619803215864, 0.23543304327706044, 0.11980918210677126, 0.12191588507795875, -0.1269080184759911, -0.03307906831998315, 0.025063160816816064, 0.19692765593229275, 0.07479225961353884, 0.09208747641903094, 0.14978204988239502, 0.20008481983942064, 0.00916798921852288, 0.10519648610898003, -0.16747519183131357, -0.12220807719859295, -0.23247516446281224, -0.12066729613368145, -0.09272393779247068, 0.039670502229868856, 0.05591525280843515, -0.0507066115969792, 0.39371897075960244, 0.04010188393030231, 0.19670025417475367, -0.14088923154949126, 0.27610997428101575, 0.07597233112689784, 0.06253558815329928, 0.04354124576969876, 0.32565051124071365, 0.18362842517936687, 0.026478677241935988, -0.3205921253115362, 0.13756998121971264, 0.059605085788379336] |
708.0195 | Accurate seeing measurements with MASS and DIMM | Astronomical seeing is quantified by a single parameter, turbulence integral,
in the framework of the Kolmogorov turbulence model. This parameter can be
routinely measured by a Differential Image Motion Monitor, DIMM. A new
instrument, Multi-Aperture Scintillation Sensor (MASS), permits to measure the
seeing in the free atmosphere above ~0.5km and, together with a DIMM, to
estimate the ground-layer seeing. The absolute accuracy of both methods is
studied here using analytical theory, numerical simulation, and experiments. A
modification of the MASS data processing to compensate for partially saturated
scintillation is developed. We find that the DIMM can be severely biased by
optical aberrations (e.g. defocus) and propagation. Seeing measurements with
DIMM and MASS can reach absolute accuracy of ~10% when their biases are
carefully controlled. Pushing this limit to 1% appears unrealistic because the
seeing itself is just a model-dependent parameter of a non-stationary random
process.
| astro-ph | astronomical seeing is quantified by a single parameter turbulence integral in the framework of the kolmogorov turbulence model this parameter can be routinely measured by a differential image motion monitor dimm a new instrument multiaperture scintillation sensor mass permits to measure the seeing in the free atmosphere above 05km and together with a dimm to estimate the groundlayer seeing the absolute accuracy of both methods is studied here using analytical theory numerical simulation and experiments a modification of the mass data processing to compensate for partially saturated scintillation is developed we find that the dimm can be severely biased by optical aberrations eg defocus and propagation seeing measurements with dimm and mass can reach absolute accuracy of 10 when their biases are carefully controlled pushing this limit to 1 appears unrealistic because the seeing itself is just a modeldependent parameter of a nonstationary random process | [['astronomical', 'seeing', 'is', 'quantified', 'by', 'a', 'single', 'parameter', 'turbulence', 'integral', 'in', 'the', 'framework', 'of', 'the', 'kolmogorov', 'turbulence', 'model', 'this', 'parameter', 'can', 'be', 'routinely', 'measured', 'by', 'a', 'differential', 'image', 'motion', 'monitor', 'dimm', 'a', 'new', 'instrument', 'multiaperture', 'scintillation', 'sensor', 'mass', 'permits', 'to', 'measure', 'the', 'seeing', 'in', 'the', 'free', 'atmosphere', 'above', '05km', 'and', 'together', 'with', 'a', 'dimm', 'to', 'estimate', 'the', 'groundlayer', 'seeing', 'the', 'absolute', 'accuracy', 'of', 'both', 'methods', 'is', 'studied', 'here', 'using', 'analytical', 'theory', 'numerical', 'simulation', 'and', 'experiments', 'a', 'modification', 'of', 'the', 'mass', 'data', 'processing', 'to', 'compensate', 'for', 'partially', 'saturated', 'scintillation', 'is', 'developed', 'we', 'find', 'that', 'the', 'dimm', 'can', 'be', 'severely', 'biased', 'by', 'optical', 'aberrations', 'eg', 'defocus', 'and', 'propagation', 'seeing', 'measurements', 'with', 'dimm', 'and', 'mass', 'can', 'reach', 'absolute', 'accuracy', 'of', '10', 'when', 'their', 'biases', 'are', 'carefully', 'controlled', 'pushing', 'this', 'limit', 'to', '1', 'appears', 'unrealistic', 'because', 'the', 'seeing', 'itself', 'is', 'just', 'a', 'modeldependent', 'parameter', 'of', 'a', 'nonstationary', 'random', 'process']] | [-0.06994138940677254, 0.16706240454125995, -0.0956354459922295, 0.07019787853850327, -0.06770073606458027, -0.13076700153437237, 0.01591566520235372, 0.4100087487216418, -0.2861969917398205, -0.3788987572770566, 0.1478316702899368, -0.24444587977874713, -0.050900923833978595, 0.2220603144491583, -0.145171324049847, 0.08878647896199254, 0.09887625760165974, 0.006788494699220691, -0.051370957446705584, -0.20561109383318885, 0.24224015365729834, 0.12101801322811905, 0.21794288756468128, 0.016221343209811796, 0.1359939528574614, -0.019029829466793064, -0.0806985746700472, 0.05266531893155641, -0.11999344761579778, 0.05375944672818554, 0.21642165588208526, 0.06482729088101122, 0.2431556030092502, -0.3519888799960932, -0.23359214959459174, 0.07290119292964745, 0.12811377942560082, 0.05083254032716569, -0.03667162104425693, -0.32415429678399554, 0.06708494876834771, -0.1390797338163894, -0.13382713602428944, -0.041801984107931074, -0.024818155775493424, 0.026067489987743404, -0.327103436323038, 0.07713386684594702, -0.010327732447573604, 0.08390054346010503, -0.06143769929864599, -0.06929483660496771, -0.01723411097676338, 0.12776263173893515, -0.01197749498310764, 0.046494338881327875, 0.1874773236825907, -0.1618704929812035, -0.01753181466645199, 0.3814430269024645, -0.08728944206571516, -0.2067327149044205, 0.1284328342298977, -0.18260953664523388, -0.06782398015881579, 0.16823472327733827, 0.15525035951820124, 0.07014586883855777, -0.18351463339432586, 0.044928578862002015, -0.002595395455298583, 0.22745718243014482, 0.06106061811119111, -0.009782834091715308, 0.17717478452606075, 0.15468965440878593, 0.06307478454740097, 0.07441318557458645, -0.21879652259101728, -0.006510843419366413, -0.2635590093947637, -0.12389561125989228, -0.15327476421629804, 0.05391364011221514, -0.1032433575601317, -0.11476611735027593, 0.3339610634009457, 0.21361648801313196, 0.1667835888155322, 0.01897935948282894, 0.36826630139694316, 0.14636270312459804, 0.07049046153083004, 0.006651225144095305, 0.2989979899268494, 0.12172510256479857, 0.10654372748750676, -0.1854600347707876, 0.08722884612749719, 0.017681764138008777] |
708.0196 | More frequencies of KUV 02464+3239 | Preliminary results on KUV 02464+3239, a pulsating DA white dwarf are
presented. Located near the red edge of the DAV instability strip, KUV
02464+3239 shows large amplitude and long period pulsation modes. Up to now
only one mode was known from a 50-minute-long light curve. Our more extended
observations allowed the identification of three additional frequencies. The
presence of previously known harmonics were confirmed and weak subharmonics are
also noticeable at some parts of the light curve. This suggests the dominance
of nonlinear pulsation effects from time to time.
| astro-ph | preliminary results on kuv 024643239 a pulsating da white dwarf are presented located near the red edge of the dav instability strip kuv 024643239 shows large amplitude and long period pulsation modes up to now only one mode was known from a 50minutelong light curve our more extended observations allowed the identification of three additional frequencies the presence of previously known harmonics were confirmed and weak subharmonics are also noticeable at some parts of the light curve this suggests the dominance of nonlinear pulsation effects from time to time | [['preliminary', 'results', 'on', 'kuv', '024643239', 'a', 'pulsating', 'da', 'white', 'dwarf', 'are', 'presented', 'located', 'near', 'the', 'red', 'edge', 'of', 'the', 'dav', 'instability', 'strip', 'kuv', '024643239', 'shows', 'large', 'amplitude', 'and', 'long', 'period', 'pulsation', 'modes', 'up', 'to', 'now', 'only', 'one', 'mode', 'was', 'known', 'from', 'a', '50minutelong', 'light', 'curve', 'our', 'more', 'extended', 'observations', 'allowed', 'the', 'identification', 'of', 'three', 'additional', 'frequencies', 'the', 'presence', 'of', 'previously', 'known', 'harmonics', 'were', 'confirmed', 'and', 'weak', 'subharmonics', 'are', 'also', 'noticeable', 'at', 'some', 'parts', 'of', 'the', 'light', 'curve', 'this', 'suggests', 'the', 'dominance', 'of', 'nonlinear', 'pulsation', 'effects', 'from', 'time', 'to', 'time']] | [-0.14445065685140435, 0.15488834560330195, -0.10986256384057924, 0.054674734876078386, -0.14079491051167928, -0.12688664270734246, 0.10148446386764673, 0.3517622815614397, -0.18966226966585964, -0.28193051866467367, 0.13033280259961347, -0.2911341865017841, -0.10499560224045788, 0.259145893685689, -0.04475926893858493, 0.01032351800875569, 0.11487409203718099, 0.0033070604225610045, 0.02096547770832496, -0.22966436497782441, 0.24186838836282154, 0.013595637293871154, 0.1748678737626919, -0.057285610268908466, -0.004069941308857365, -0.06139228827404705, -0.09978336901093082, -0.0780773668560538, -0.11801156082021241, -0.02779856698841534, 0.204347481824119, 0.03188372101232579, 0.1846535576041788, -0.3413493336517025, -0.23494960577227175, 0.056628341143633326, 0.17055923331909897, 0.07009315660054033, -0.017798160361053306, -0.26185545444869524, 0.05391758326070637, -0.09045416350603443, -0.20717689931519667, 0.03965870928103951, 0.0775182406492108, 0.020276192416944963, -0.23055047074078835, 0.10466370227401388, 0.0897067134131, 0.0849602723240175, -0.06968190351141278, -0.18308157851094042, -0.06718411384711297, 0.06988813002614981, 0.07624381309671496, 0.05150461257752878, 0.04987443206747147, -0.06818668817603876, -0.05902034432140433, 0.32275945912922244, -0.12412881415167992, -0.01504091467226813, 0.23932815129360693, -0.21259749737906863, -0.12093979233230295, 0.20241978905290703, 0.14030283218546008, 0.12851320564302363, -0.1376438659181903, -0.012242265184547498, 0.012682994123844599, 0.2229740133281501, 0.1223489298506386, 0.05619884572330524, 0.2690387058114125, 0.15233475104270672, -0.03714847243232229, 0.1154525996402795, -0.2113908468004824, -0.036182313480160454, -0.28019845171365887, -0.051686034007368355, -0.0984404961170433, 0.0034366918658964673, -0.06537813898963081, -0.1374873086513782, 0.42292844730598683, 0.04865139132413209, 0.16205198619387706, -0.0017361364179206166, 0.26437189369144937, 0.09946878131619417, 0.11485228505973116, 0.11160739948338066, 0.3482705942551547, 0.17641630004932682, 0.10197536629857495, -0.2549850975840606, 0.00657472323986109, -0.014842683708676222] |
708.0197 | A frequency domain empirical likelihood for short- and long-range
dependence | This paper introduces a version of empirical likelihood based on the
periodogram and spectral estimating equations. This formulation handles
dependent data through a data transformation (i.e., a Fourier transform) and is
developed in terms of the spectral distribution rather than a time domain
probability distribution. The asymptotic properties of frequency domain
empirical likelihood are studied for linear time processes exhibiting both
short- and long-range dependence. The method results in likelihood ratios which
can be used to build nonparametric, asymptotically correct confidence regions
for a class of normalized (or ratio) spectral parameters, including
autocorrelations. Maximum empirical likelihood estimators are possible, as well
as tests of spectral moment conditions. The methodology can be applied to
several inference problems such as Whittle estimation and goodness-of-fit
testing.
| math.ST stat.TH | this paper introduces a version of empirical likelihood based on the periodogram and spectral estimating equations this formulation handles dependent data through a data transformation ie a fourier transform and is developed in terms of the spectral distribution rather than a time domain probability distribution the asymptotic properties of frequency domain empirical likelihood are studied for linear time processes exhibiting both short and longrange dependence the method results in likelihood ratios which can be used to build nonparametric asymptotically correct confidence regions for a class of normalized or ratio spectral parameters including autocorrelations maximum empirical likelihood estimators are possible as well as tests of spectral moment conditions the methodology can be applied to several inference problems such as whittle estimation and goodnessoffit testing | [['this', 'paper', 'introduces', 'a', 'version', 'of', 'empirical', 'likelihood', 'based', 'on', 'the', 'periodogram', 'and', 'spectral', 'estimating', 'equations', 'this', 'formulation', 'handles', 'dependent', 'data', 'through', 'a', 'data', 'transformation', 'ie', 'a', 'fourier', 'transform', 'and', 'is', 'developed', 'in', 'terms', 'of', 'the', 'spectral', 'distribution', 'rather', 'than', 'a', 'time', 'domain', 'probability', 'distribution', 'the', 'asymptotic', 'properties', 'of', 'frequency', 'domain', 'empirical', 'likelihood', 'are', 'studied', 'for', 'linear', 'time', 'processes', 'exhibiting', 'both', 'short', 'and', 'longrange', 'dependence', 'the', 'method', 'results', 'in', 'likelihood', 'ratios', 'which', 'can', 'be', 'used', 'to', 'build', 'nonparametric', 'asymptotically', 'correct', 'confidence', 'regions', 'for', 'a', 'class', 'of', 'normalized', 'or', 'ratio', 'spectral', 'parameters', 'including', 'autocorrelations', 'maximum', 'empirical', 'likelihood', 'estimators', 'are', 'possible', 'as', 'well', 'as', 'tests', 'of', 'spectral', 'moment', 'conditions', 'the', 'methodology', 'can', 'be', 'applied', 'to', 'several', 'inference', 'problems', 'such', 'as', 'whittle', 'estimation', 'and', 'goodnessoffit', 'testing']] | [-0.05215711286670067, 0.02049052699022298, -0.15911294466520592, 0.14278036363733312, -0.0989338247639286, -0.1243551770429604, 0.05025171204914937, 0.400316794440756, -0.23314989968534566, -0.3367911017674014, 0.1665577797476596, -0.22919528043215595, -0.11975415698176901, 0.20801355678217137, -0.06312202204802506, 0.14632283251853737, 0.049265590146168825, -0.021858383636406766, -0.11106587071927658, -0.20907538315012475, 0.2570596858556193, 0.08812541166335587, 0.3334090371608613, -0.01938842891571604, 0.07604253900661398, 0.024560452404818158, -0.06157186497532861, 0.041471791589950645, -0.12034053590936147, 0.10690677570315396, 0.24984381066226377, 0.1873717613601527, 0.2909842674143431, -0.3327624987625343, -0.21939326462343456, 0.13606593077737322, 0.171935247379446, 0.024294688263188716, -0.002385685503354099, -0.2559544435300963, 0.02953435112608642, -0.14569464808981109, -0.08357729365182208, -0.10606070505682288, -0.02543958132647402, 0.07042788928071779, -0.37888511624641535, 0.15380172025065322, 0.05944544420959958, 0.06866592225595945, -0.025862690473989983, -0.14963974577291467, 0.03327323961056527, 0.059746295964720135, 0.09890072211259748, -0.04475913853270978, 0.11460063354362075, -0.06590029256176053, -0.09867657616931369, 0.32424504189502174, -0.10221261584223153, -0.23955223293656983, 0.1408765641991352, -0.1015348195863085, -0.13865009651186203, 0.09393047096540894, 0.21336581770754684, 0.1532092296700107, -0.2035945743668779, 0.05901390321106022, 0.023320331987811298, 0.1707437403700731, 0.056728449006511916, 0.01423855933428901, 0.18431955406714867, 0.14849068216101183, 0.064431767880432, 0.14988739380416105, -0.16856098438840741, -0.07910481363779115, -0.29372404596003576, -0.11709233624027754, -0.2465919644005854, -0.021189653413082526, -0.1603233883970387, -0.2325139720129167, 0.42471623771664935, 0.1456091727046826, 0.200656428058609, 0.15302827110139244, 0.28058964121571883, 0.18588566968342426, 0.012078577338346863, 0.0665547818066628, 0.1609555997817618, 0.15309482453224377, 0.04441813544589814, -0.16445414937381458, 0.1304166842918328, 0.042353255774568374] |
708.0198 | The Chemical Composition of an Extrasolar Minor Planet | We report the relative abundances of 17 elements in the atmosphere of the
white dwarf star GD 362, material that, very probably, was contained previously
in a large asteroid or asteroids with composition similar to the Earth/Moon
system. The asteroid may have once been part of a larger parent body not unlike
one of the terrestrial planets of our solar system.
| astro-ph | we report the relative abundances of 17 elements in the atmosphere of the white dwarf star gd 362 material that very probably was contained previously in a large asteroid or asteroids with composition similar to the earthmoon system the asteroid may have once been part of a larger parent body not unlike one of the terrestrial planets of our solar system | [['we', 'report', 'the', 'relative', 'abundances', 'of', '17', 'elements', 'in', 'the', 'atmosphere', 'of', 'the', 'white', 'dwarf', 'star', 'gd', '362', 'material', 'that', 'very', 'probably', 'was', 'contained', 'previously', 'in', 'a', 'large', 'asteroid', 'or', 'asteroids', 'with', 'composition', 'similar', 'to', 'the', 'earthmoon', 'system', 'the', 'asteroid', 'may', 'have', 'once', 'been', 'part', 'of', 'a', 'larger', 'parent', 'body', 'not', 'unlike', 'one', 'of', 'the', 'terrestrial', 'planets', 'of', 'our', 'solar', 'system']] | [-0.07485468250500862, 0.18324330355590362, -0.08448189712266942, 0.006753681609254392, -0.0733158651006515, 0.00038351736901724926, 0.044063380537707295, 0.3033432694243603, -0.14961410561179528, -0.3816768138165601, 0.06271719968816662, -0.3375826636481969, -0.10225224796087161, 0.17912783747401517, -0.16959555381450986, 0.027534756109072658, 0.15980490826864224, 0.022133711541308183, -0.04188626185040463, -0.28703113196448227, 0.28958392702043056, 0.08174202524003435, 0.028584350137131623, -0.09335401096976682, 0.04513746754983898, -0.13038891756174262, 0.01644713862142602, -0.064734523276203, -0.11394077278809625, 0.08227510940375142, 0.22440752360710234, 0.10118466026729858, 0.17527981743705076, -0.3835298451060643, -0.24480195477849148, 0.056855353244320776, 0.12891687715777242, 0.04790638868132087, -0.08058919938525459, -0.24951158925035938, 0.10778742773672108, -0.24292705461505007, -0.1703019752396179, 0.10641487177888878, 0.10309763637478234, 0.030898422140200606, -0.19685130455668587, 0.02645148239174827, 0.14477021647600521, 0.16258860363617356, -0.18329466154921006, -0.22421319633493292, -0.06940611740039876, 0.12094088790739779, 0.04490880072727555, 0.015726696570083253, 0.18251319984584802, -0.009701733233132323, 0.033789769181462585, 0.4800988406059332, -0.11230960032391193, -0.02242618940625584, 0.2772650169972025, -0.27051967831297974, -0.1308039085115077, 0.1697286528031357, 0.17304019599420126, 0.14714043215298872, -0.23139817331780177, 0.019981813464374817, -0.07163203501745631, 0.20837865403441133, 0.05196826909592406, 0.038747433962330956, 0.31653159557551636, 0.1500626275560162, 0.06531448187650044, 0.06950580741691052, -0.21210751417627344, -0.04486490303619963, -0.14700953557621688, -0.19242437525850828, -0.1840906999165528, 0.040726216739190545, -0.0755752910779728, -0.16850300440106725, 0.36331781158681775, 0.11864838673023233, 0.18133664751028428, -0.08199406373047377, 0.2506941515097364, 0.015438583979123562, 0.16125296569261394, 0.09911250462755561, 0.38340595624119533, 0.12427050733297575, 0.1000051824452325, -0.22874074188427482, 0.17026709033115234, 0.01732733280046797] |
708.0199 | $\Lambda NN$ and $\Sigma NN$ systems at threshold: II. The effect of D
waves | Using the two-body interactions obtained from a chiral constituent quark
model we study all $\Lambda NN$ and $\Sigma NN$ states with I=0,1,2 and
J=1/2,3/2 at threshold, taking into account all three-body configurations with
S and D wave components. We constrain further the limits for the $\Lambda N$
spin-triplet scattering length a_{1/2,1}. Using the hypertriton binding energy
we find a narrow interval for the possible values of the $\Lambda N$
spin-singlet scattering length a_{1/2,0}. We found that the $\Sigma NN$ system
has a quasibound state in the (I,J) = (1,1/2) channel very near threshold with
a width of about 2.1 MeV.
| hep-ph nucl-th | using the twobody interactions obtained from a chiral constituent quark model we study all lambda nn and sigma nn states with i012 and j1232 at threshold taking into account all threebody configurations with s and d wave components we constrain further the limits for the lambda n spintriplet scattering length a_121 using the hypertriton binding energy we find a narrow interval for the possible values of the lambda n spinsinglet scattering length a_120 we found that the sigma nn system has a quasibound state in the ij 112 channel very near threshold with a width of about 21 mev | [['using', 'the', 'twobody', 'interactions', 'obtained', 'from', 'a', 'chiral', 'constituent', 'quark', 'model', 'we', 'study', 'all', 'lambda', 'nn', 'and', 'sigma', 'nn', 'states', 'with', 'i012', 'and', 'j1232', 'at', 'threshold', 'taking', 'into', 'account', 'all', 'threebody', 'configurations', 'with', 's', 'and', 'd', 'wave', 'components', 'we', 'constrain', 'further', 'the', 'limits', 'for', 'the', 'lambda', 'n', 'spintriplet', 'scattering', 'length', 'a_121', 'using', 'the', 'hypertriton', 'binding', 'energy', 'we', 'find', 'a', 'narrow', 'interval', 'for', 'the', 'possible', 'values', 'of', 'the', 'lambda', 'n', 'spinsinglet', 'scattering', 'length', 'a_120', 'we', 'found', 'that', 'the', 'sigma', 'nn', 'system', 'has', 'a', 'quasibound', 'state', 'in', 'the', 'ij', '112', 'channel', 'very', 'near', 'threshold', 'with', 'a', 'width', 'of', 'about', '21', 'mev']] | [-0.16899317315750823, 0.20567669470304834, -0.049490814045018795, 0.0787475450329252, 0.026187423579142784, -0.17800401828069354, 0.08158759348641735, 0.3519567547692466, -0.19975345395505428, -0.2481643712608931, -0.05803027693014208, -0.34715283231944155, -0.015198237403084706, 0.08036597037073417, 0.19371688139346457, 0.06243541189028339, 0.07574817042356145, 0.10408249591265988, -0.05338736403956721, -0.17440672890888048, 0.3226921350128718, -0.02026299256639382, 0.15367714655537582, 0.14799338536932297, 0.03638230236343194, 0.07550108182656858, 0.07756237437967788, -0.036359556067312504, -0.2137517099075659, 0.05280548052684663, 0.2230595906964772, 0.021628975628193506, 0.14503885605900557, -0.35593750531372337, -0.1781169650668144, 0.11695963959929716, 0.1663069260287454, 0.11901179202304212, 0.05948580289739616, -0.3198564527076237, 0.11778674654022925, -0.18902903797162562, -0.14410647416736969, -0.006574796723950769, 0.13851879758414687, -0.017689285312596822, -0.31713955463438304, 0.058936850916709485, 0.03810003148055799, 0.015989047753595814, -0.08377620387707174, -0.25808536129182724, -0.04316980213637358, 0.049621423466380724, 0.014892573836835619, 0.06147909122903246, 0.09040790179638748, -0.13837366070195636, -0.07140461839351457, 0.3607430472470743, -0.08861837558899574, -0.1710998216624727, 0.10610158141935244, -0.14108766549142057, -0.09818350518429556, 0.16561456549355819, 0.13925005778785526, 0.05744685130385855, -0.1128101948571881, 0.13189286836386976, -0.0407297039803864, 0.23763524077367038, 0.11897851722602992, 0.061061739463109485, 0.18901065804217895, 0.1933171127529181, -0.014044324059195975, 0.08642981465445045, -0.16507133886160463, -0.05515030592010289, -0.3509870006021151, -0.05610800225326081, -0.13719445461474514, 0.0741876633434266, -0.07939290036834397, -0.06911702481933783, 0.33692078944775705, 0.07967559356223215, 0.2874163292089151, 0.059155825400705804, 0.1918604429619214, 0.12028182275862116, 0.07336712390971706, 0.09322582711657681, 0.23567261568933112, 0.17203309120293514, 0.03399902564886304, -0.2690559955501026, -0.01602860618881958, 0.01906592897187496] |
708.02 | A Note on Shortest Developments | De Vrijer has presented a proof of the finite developments theorem which, in
addition to showing that all developments are finite, gives an effective
reduction strategy computing longest developments as well as a simple formula
computing their length.
We show that by applying a rather simple and intuitive principle of duality
to de Vrijer's approach one arrives at a proof that some developments are
finite which in addition yields an effective reduction strategy computing
shortest developments as well as a simple formula computing their length. The
duality fails for general beta-reduction.
Our results simplify previous work by Khasidashvili.
| cs.LO | de vrijer has presented a proof of the finite developments theorem which in addition to showing that all developments are finite gives an effective reduction strategy computing longest developments as well as a simple formula computing their length we show that by applying a rather simple and intuitive principle of duality to de vrijers approach one arrives at a proof that some developments are finite which in addition yields an effective reduction strategy computing shortest developments as well as a simple formula computing their length the duality fails for general betareduction our results simplify previous work by khasidashvili | [['de', 'vrijer', 'has', 'presented', 'a', 'proof', 'of', 'the', 'finite', 'developments', 'theorem', 'which', 'in', 'addition', 'to', 'showing', 'that', 'all', 'developments', 'are', 'finite', 'gives', 'an', 'effective', 'reduction', 'strategy', 'computing', 'longest', 'developments', 'as', 'well', 'as', 'a', 'simple', 'formula', 'computing', 'their', 'length', 'we', 'show', 'that', 'by', 'applying', 'a', 'rather', 'simple', 'and', 'intuitive', 'principle', 'of', 'duality', 'to', 'de', 'vrijers', 'approach', 'one', 'arrives', 'at', 'a', 'proof', 'that', 'some', 'developments', 'are', 'finite', 'which', 'in', 'addition', 'yields', 'an', 'effective', 'reduction', 'strategy', 'computing', 'shortest', 'developments', 'as', 'well', 'as', 'a', 'simple', 'formula', 'computing', 'their', 'length', 'the', 'duality', 'fails', 'for', 'general', 'betareduction', 'our', 'results', 'simplify', 'previous', 'work', 'by', 'khasidashvili']] | [-0.10378579878791545, 0.10626159023164898, -0.16003540793220358, 0.07444537041495398, -0.13626856090559158, -0.15266625012251703, 0.041358833293391704, 0.3255683418440943, -0.24246761652466375, -0.2826522617057587, 0.1073534861667819, -0.21604085861084363, -0.1987772945431061, 0.2712483585322237, -0.10093987734095815, 0.004175709541110943, 0.060380688300938345, 0.014350767383196702, -0.09557083996818012, -0.277879663122197, 0.22314101085066795, 0.0662207806405301, 0.31259000113156316, 0.12401295319129228, 0.1139364335637462, 0.09368935420449513, -0.042881449097573444, 0.05368710848658035, -0.1464737010136711, 0.18083549077467373, 0.2900055443072536, 0.1425498166742424, 0.27441032519952085, -0.406273919933786, -0.18641904354444705, 0.051773544041983165, 0.1619949787927908, 0.19135360843453478, -0.07316132271565341, -0.19329202704830095, 0.1119420713900278, -0.20204209747801846, -0.19362766276268908, -0.09625629977866386, 0.05324764840770513, -0.00872310202976223, -0.2150279474638713, -0.012410622580148356, 0.1381508202975965, 0.05411023807634289, -0.007098392277839594, -0.11827410963572522, 0.07359700764694328, 0.08609821450469705, 0.023630628197376307, 0.06604225428115267, 0.08685330667261344, -0.061968087936596326, -0.19218572052583718, 0.35253162022369605, -0.08518989551036309, -0.16225222897871086, 0.1738874090903361, -0.011610894706488276, -0.15776285838607387, 0.07852963067125529, 0.0683034354976068, 0.13405724964710922, -0.12461203471563446, 0.13175977910032088, -0.051550223268956565, 0.05744672432774678, 0.08719867891826046, 0.05987602971254091, 0.154532152635511, 0.13206155187799595, 0.10672792116019991, 0.11735910241501794, 0.027738423823999863, -0.12957620590168517, -0.3521929398411885, -0.16664042314126468, -0.18795898317209017, 0.036782210265907146, -0.0986526167324276, -0.17903302086051553, 0.3064765431918204, 0.09748229835046611, 0.22518996556755155, 0.1434303479739659, 0.3342420211217056, 0.16444527743078652, 0.05813448706855221, 0.06360813555268881, 0.1444050673420255, 0.1538361523586597, 0.09643016684761581, -0.1788458718704836, 0.02993055499003579, 0.15721664938610047] |
708.0201 | Four-wave mixing, quantum control and compensating losses in doped
negative-index photonic metamaterials | The possibility of compensating absorption in negative-index metatamterials
(NIMs) doped by resonant nonlinear-optical centers is shown. The role of
quantum interference and extraordinary properties of four-wave parametric
amplification of counter-propagating electromagnetic waves in NIMs are
discussed.
| quant-ph physics.optics | the possibility of compensating absorption in negativeindex metatamterials nims doped by resonant nonlinearoptical centers is shown the role of quantum interference and extraordinary properties of fourwave parametric amplification of counterpropagating electromagnetic waves in nims are discussed | [['the', 'possibility', 'of', 'compensating', 'absorption', 'in', 'negativeindex', 'metatamterials', 'nims', 'doped', 'by', 'resonant', 'nonlinearoptical', 'centers', 'is', 'shown', 'the', 'role', 'of', 'quantum', 'interference', 'and', 'extraordinary', 'properties', 'of', 'fourwave', 'parametric', 'amplification', 'of', 'counterpropagating', 'electromagnetic', 'waves', 'in', 'nims', 'are', 'discussed']] | [-0.21257971133038933, 0.2611707919410297, 0.030553354682134732, -0.003677319053427449, -0.08116540951388222, -0.14558291326143913, -0.008349844899826816, 0.471570203772613, -0.20835322769624845, -0.23211914731987884, -0.05295185981917062, -0.3343780023444976, -0.20482086432831628, 0.22172488902828524, 0.03702874460390636, 0.14487425690250738, -0.07175315396328058, -0.12850860894790717, 0.061385716630944186, -0.10087316066824964, 0.30036218678578736, 0.07698722364314432, 0.40342351623943873, 0.039727852999099665, 0.07392971462437085, 0.008129043903734003, -0.004178200289607048, -0.10976437681487629, -0.028710684606007168, 0.07407613276903119, 0.3145413269954068, -0.06033309541775712, 0.23389562219381332, -0.4535709115543536, -0.2727662096864411, 0.01604577608938728, 0.17000318633924638, 0.166853999878679, -0.18658565487712622, -0.3084111709679876, 0.008470169508031436, -0.06993719407224229, -0.1597495582619948, -0.013865451621157782, -0.0523233528648104, 0.04268375671069537, -0.2259210146431412, 0.01365316773631743, 0.11989951790975673, 0.050533108226954934, -0.001579461233424289, -0.005534878852111953, -0.07068740432815893, -0.05659261015909059, -0.006603434661935483, -0.14572593646922283, 0.1620720545628241, -0.17982656839137365, -0.17197249180504254, 0.41982606914326814, -0.09128632476287228, -0.07833137415083391, 0.09814241100102664, -0.18811970271968415, 0.018516372816104975, 0.22600161187084658, 0.16491154078394174, 0.0657198066157954, -0.11756261664309672, 0.04993197574513033, 0.033526483736932275, 0.13018950302419918, 0.25454568063308086, 0.25716799376532434, 0.28520656440939224, 0.1517245189951999, -0.03211645478648799, 0.16165479815432005, -0.058627080445044805, 0.0118153459392488, -0.23491250899221217, -0.1288418771965163, -0.13578472632382596, 0.07140562018113476, -0.045398015544716536, -0.15317417378121587, 0.4080275954944747, 0.10943022950419358, 0.05261523848665612, -0.20480160854224647, 0.32441946949277606, 0.1934131197365267, 0.0364006939211062, -0.04094728552071111, 0.4748720047197172, 0.2712933842159275, 0.0866879611076521, -0.33691381994368774, 0.007058924330132348, -0.04206629212213946] |
708.0202 | Regular spanning subgraphs of bipartite graphs of high minimum degree | Let G be a simple balanced bipartite graph on $2n$ vertices, $\delta =
\delta(G)/n$, and $\rho={\delta + \sqrt{2 \delta -1} \over 2}$. If $\delta >
1/2$ then it has a $\lfloor \rho n \rfloor$-regular spanning subgraph. The
statement is nearly tight.
| math.CO | let g be a simple balanced bipartite graph on 2n vertices delta deltagn and rhodelta sqrt2 delta 1 over 2 if delta 12 then it has a lfloor rho n rfloorregular spanning subgraph the statement is nearly tight | [['let', 'g', 'be', 'a', 'simple', 'balanced', 'bipartite', 'graph', 'on', '2n', 'vertices', 'delta', 'deltagn', 'and', 'rhodelta', 'sqrt2', 'delta', '1', 'over', '2', 'if', 'delta', '12', 'then', 'it', 'has', 'a', 'lfloor', 'rho', 'n', 'rfloorregular', 'spanning', 'subgraph', 'the', 'statement', 'is', 'nearly', 'tight']] | [-0.22954127671093577, 0.23461726031059194, -0.013039230863796547, 0.006057904531998146, -0.0453924899144719, -0.2959580124200632, 0.09729962661448452, 0.37378369458019733, -0.2514473359980103, -0.3270022934043987, 0.02325823163199756, -0.419563299872809, -0.10561043309927401, 0.0832113896548334, -0.035775860073044896, -0.06774140169727616, 0.10688534873123798, 0.19734444420060349, 0.012121613266774349, -0.28848360038197524, 0.207769644446671, -0.15088374224594897, 0.04677873423012594, 0.0954973343371724, 0.04938173662715902, 0.03884121051265134, 0.10797167874665724, 0.03318921556153024, -0.25835401771797073, -0.045785489595598645, 0.21908504932394457, 0.1665055265184492, 0.255270437647899, -0.28820923565783435, -0.0971769679939219, 0.33008972953798044, 0.18650373125759265, -0.10712583176791668, 0.13257197348543237, -0.1382276507275593, 0.1683730921354759, -0.11398146436032322, -0.10058027529157698, 0.036890285529403224, 0.22054884686238235, -0.11325802325478031, -0.3347929422226217, 0.020580338779836893, 0.10897461521542734, 0.005255021361841096, 0.14348966717564812, -0.26820187291337383, -0.05262540187686682, 0.026253216039751552, -0.18987362053788578, 0.2573210802834688, -0.024383605561322637, -0.06287223788806134, -0.09080301236826926, 0.3516705677741104, -0.04492506470220784, -0.16407337674819347, 0.01414856685571269, -0.19509628785049749, -0.17907553129932946, 0.12319335729504625, 0.02216116067332526, 0.17723871079377002, -0.059428704178167716, 0.19574345690812656, -0.16807852333618534, 0.21408339355710065, 0.1893190865456644, -0.03349433187395334, 0.059646853607975774, 0.16397000721836877, 0.23098154896352854, 0.06274978244457291, 0.04188436930093707, 0.12247551705998679, -0.28209448605775833, -0.04756143996362678, -0.2787450222401983, 0.2328861796348873, -0.30159498949029107, -0.11648635744738083, 0.35511577563981217, -0.051041949876687594, 0.20873825870350832, 0.15849784831516445, 0.2067873147574978, 0.06578864659079248, 0.0075994030501331305, 0.24401589926694417, 0.0479410877968702, 0.21279960617216098, -0.11019089923097959, -0.13032733923238185, -0.01349694225549077, 0.13553522537565893] |
708.0203 | The end of the Galactic spectrum | We use a diffusion galactic model to analyze the end of the Galactic cosmic
ray spectrum and its mixing with the extragalactic cosmic ray flux. We analyze
the transition between Galactic and extragalactic components using two
different extragalactic models. We compare the sum of the diffusive galactic
spectrum and extragalactic spectrum with the available experimental data.
| astro-ph | we use a diffusion galactic model to analyze the end of the galactic cosmic ray spectrum and its mixing with the extragalactic cosmic ray flux we analyze the transition between galactic and extragalactic components using two different extragalactic models we compare the sum of the diffusive galactic spectrum and extragalactic spectrum with the available experimental data | [['we', 'use', 'a', 'diffusion', 'galactic', 'model', 'to', 'analyze', 'the', 'end', 'of', 'the', 'galactic', 'cosmic', 'ray', 'spectrum', 'and', 'its', 'mixing', 'with', 'the', 'extragalactic', 'cosmic', 'ray', 'flux', 'we', 'analyze', 'the', 'transition', 'between', 'galactic', 'and', 'extragalactic', 'components', 'using', 'two', 'different', 'extragalactic', 'models', 'we', 'compare', 'the', 'sum', 'of', 'the', 'diffusive', 'galactic', 'spectrum', 'and', 'extragalactic', 'spectrum', 'with', 'the', 'available', 'experimental', 'data']] | [-0.0555348551798878, 0.14650251937564462, -0.030496303291459168, 0.16106671151023225, -0.11830255083207573, 0.010109997420970882, 0.027978999157702283, 0.436187637171575, -0.24812223043824946, -0.32743673831490533, -0.023897439449293807, -0.38998760203165667, -0.005625598980779094, 0.20104936746065505, 0.08610396803955414, -0.02995866251148982, -0.003402140989367451, -0.08751611135500882, 0.026485574614655758, -0.1980199505175863, 0.3261904451563688, 0.1859287317576153, 0.23353750769664267, 0.0026393703717206207, 0.13994930951698084, -0.10332698555430397, -0.1423458562099508, -0.07167898826966328, -0.14831099087937868, 0.11729029123671353, 0.1979622109614476, 0.1878631727636925, 0.060378054240053255, -0.3989615690328979, -0.2933160362133224, 0.17895776784696085, 0.18348899906102037, 0.031832942905436666, -0.07028228102717549, -0.25708995277195107, 0.011798271651579333, -0.161714098682361, -0.1379665440680193, 0.06230593624059111, -0.10174646682155851, 0.08443197331923459, -0.1400518396569948, 0.07090066300172891, -0.024825553808893477, 0.08519792037882976, -0.14223865644349384, -0.08399482559512503, 0.008977347702187086, 0.12814471297731092, 0.11171669928548258, 0.049904135754331946, 0.13383246026101656, -0.11857574473002128, -0.08348870294035546, 0.44441236262874945, -0.14559473676074827, -0.024635283409484794, 0.19246841062392508, -0.2174947024073585, -0.18176788016821124, 0.08677699840128687, 0.2141317592800728, 0.08583405848392951, -0.21286026087389992, 0.11181642763403943, 0.03506231329187618, 0.1126393924434004, -0.03012601617124996, 0.015366606223064341, 0.26488801358001574, 0.11587157660895693, 0.06494869500797254, 0.13200895401782223, -0.3090393332365368, -0.043771692152534215, -0.29274592119535164, -0.060239534924871156, -0.14368392238559732, 0.12809371467613215, -0.15776432960748416, -0.1377844902453944, 0.4192608625162393, 0.1390864810174597, 0.23743391816138423, 0.06125554666920964, 0.3695790952104809, 0.02436696636557047, -0.02641326833483098, 0.15572469807895167, 0.3407995164702048, 0.17670069455302187, 0.11617652877300445, -0.2464029218203255, 0.018849127726363286, -0.025201035430654883] |
708.0204 | Phase diagram and magnetocaloric effect of CoMnGe_{1-x}Sn_{x} alloys | We propose the phase diagram of a new pseudo-ternary compound,
CoMnGe_{1-x}Sn_{x}, in the range x less than or equal to 0.1. Our phase diagram
is a result of magnetic and calometric measurements. We demonstrate the
appearance of a hysteretic magnetostructural phase transition in the range
x=0.04 to x=0.055, similar to that observed in CoMnGe under hydrostatic
pressure. From magnetisation measurements, we show that the isothermal entropy
change associated with the magnetostructural transition can be as high as 4.5
J/(K kg) in a field of 1 Tesla. However, the large thermal hysteresis in this
transition (~20 K) will limit its straightforward use in a magnetocaloric
device.
| cond-mat.mtrl-sci cond-mat.str-el | we propose the phase diagram of a new pseudoternary compound comnge_1xsn_x in the range x less than or equal to 01 our phase diagram is a result of magnetic and calometric measurements we demonstrate the appearance of a hysteretic magnetostructural phase transition in the range x004 to x0055 similar to that observed in comnge under hydrostatic pressure from magnetisation measurements we show that the isothermal entropy change associated with the magnetostructural transition can be as high as 45 jk kg in a field of 1 tesla however the large thermal hysteresis in this transition 20 k will limit its straightforward use in a magnetocaloric device | [['we', 'propose', 'the', 'phase', 'diagram', 'of', 'a', 'new', 'pseudoternary', 'compound', 'comnge_1xsn_x', 'in', 'the', 'range', 'x', 'less', 'than', 'or', 'equal', 'to', '01', 'our', 'phase', 'diagram', 'is', 'a', 'result', 'of', 'magnetic', 'and', 'calometric', 'measurements', 'we', 'demonstrate', 'the', 'appearance', 'of', 'a', 'hysteretic', 'magnetostructural', 'phase', 'transition', 'in', 'the', 'range', 'x004', 'to', 'x0055', 'similar', 'to', 'that', 'observed', 'in', 'comnge', 'under', 'hydrostatic', 'pressure', 'from', 'magnetisation', 'measurements', 'we', 'show', 'that', 'the', 'isothermal', 'entropy', 'change', 'associated', 'with', 'the', 'magnetostructural', 'transition', 'can', 'be', 'as', 'high', 'as', '45', 'jk', 'kg', 'in', 'a', 'field', 'of', '1', 'tesla', 'however', 'the', 'large', 'thermal', 'hysteresis', 'in', 'this', 'transition', '20', 'k', 'will', 'limit', 'its', 'straightforward', 'use', 'in', 'a', 'magnetocaloric', 'device']] | [-0.1499768356177775, 0.2197406722630546, -0.05370584711548325, -0.012772096348112648, -0.047257248936130584, -0.08392272574049466, 0.1322249396505214, 0.3853741642268537, -0.23861004168041122, -0.33382284011944985, 0.06952600555666225, -0.2930342972965784, -0.11098545494272365, 0.17459564885769935, -0.01305220063179008, -0.002993412185302095, -0.0333473943264305, 0.041122239867442296, -0.15936391855204632, -0.17620934349783127, 0.2527103838375182, -0.01318322584141516, 0.2594196678803854, 0.05083088563400257, 0.05774434750393322, -0.07901625050846668, 0.13928967622985827, 0.06366080275818127, -0.16656024117111476, -0.02899481199717927, 0.25477223924713804, -0.015372947008587483, 0.17874336472115687, -0.3410722288908889, -0.2061692403123072, 0.08810413562584198, 0.10767184915834839, 0.08002417408002233, -0.05602560935144141, -0.23483821567491564, 0.11565737174914299, -0.15315146396135532, -0.0874098500053769, -0.09556488127637545, -0.01672338505922048, -0.022724470563314277, -0.25965768248927823, 0.11711021484264615, 0.08620343835644641, 0.13107047167615693, -0.0822799299782576, -0.12777611577105755, -0.02703000554245291, 0.05149585604260775, 0.01790428542739992, 0.11755461228369436, 0.1703488532277457, -0.10052769938348205, -0.07377570120332926, 0.37488049597850126, -0.11644600252962775, -0.025221719623552363, 0.1541168819480006, -0.25566086554628553, -0.1225534981541625, 0.2140570454010107, 0.13354634519443775, 0.10690174056488333, -0.12324283328088163, 0.025386243049864594, 0.025827344455552802, 0.20553555915322047, 0.016356275199903448, -0.007966338693010576, 0.2024149954391336, 0.1761093937285534, 0.033903232753730056, 0.20886286526118197, -0.15436103784996855, -0.0606942277591567, -0.26850161801128497, -0.19770663638499755, -0.16804920599199108, 0.0826135623286867, -0.12435054413291051, -0.18417742202347778, 0.3344402505464635, 0.21144374412059494, 0.22712651209779156, -0.02231157588709182, 0.23420913492157622, 0.10285853213083578, 0.07102575622842584, 0.03804696864421362, 0.26140609823587774, 0.17506676296549803, 0.1956360675937053, -0.2390914285234492, 0.07867808777893197, -0.03241908424127015] |
708.0205 | Proximity DC squids in the long junction limit | We report the design and measurement of
Superconducting/normal/superconducting (SNS) proximity DC squids in the long
junction limit, i.e. superconducting loops interrupted by two normal metal
wires roughly a micrometer long. Thanks to the clean interface between the
metals, at low temperature a large supercurrent flows through the device. The
dc squid-like geometry leads to an almost complete periodic modulation of the
critical current through the device by a magnetic flux, with a flux periodicity
of a flux quantum h/2e through the SNS loop. In addition, we examine the entire
field dependence, notably the low and high field dependence of the maximum
switching current. In contrast with the well-known Fraunhoffer-type
oscillations typical of short wide junctions, we find a monotonous gaussian
extinction of the critical current at high field. As shown in [15], this
monotonous dependence is typical of long and narrow diffusive junctions. We
also find in some cases a puzzling reentrance at low field. In contrast, the
temperature dependence of the critical current is well described by the
proximity effect theory, as found by Dubos {\it et al.} [16] on SNS wires in
the long junction limit. The switching current distributions and hysteretic IV
curves also suggest interesting dynamics of long SNS junctions with an
important role played by the diffusion time across the junction.
| cond-mat.mes-hall cond-mat.supr-con | we report the design and measurement of superconductingnormalsuperconducting sns proximity dc squids in the long junction limit ie superconducting loops interrupted by two normal metal wires roughly a micrometer long thanks to the clean interface between the metals at low temperature a large supercurrent flows through the device the dc squidlike geometry leads to an almost complete periodic modulation of the critical current through the device by a magnetic flux with a flux periodicity of a flux quantum h2e through the sns loop in addition we examine the entire field dependence notably the low and high field dependence of the maximum switching current in contrast with the wellknown fraunhoffertype oscillations typical of short wide junctions we find a monotonous gaussian extinction of the critical current at high field as shown in 15 this monotonous dependence is typical of long and narrow diffusive junctions we also find in some cases a puzzling reentrance at low field in contrast the temperature dependence of the critical current is well described by the proximity effect theory as found by dubos it et al 16 on sns wires in the long junction limit the switching current distributions and hysteretic iv curves also suggest interesting dynamics of long sns junctions with an important role played by the diffusion time across the junction | [['we', 'report', 'the', 'design', 'and', 'measurement', 'of', 'superconductingnormalsuperconducting', 'sns', 'proximity', 'dc', 'squids', 'in', 'the', 'long', 'junction', 'limit', 'ie', 'superconducting', 'loops', 'interrupted', 'by', 'two', 'normal', 'metal', 'wires', 'roughly', 'a', 'micrometer', 'long', 'thanks', 'to', 'the', 'clean', 'interface', 'between', 'the', 'metals', 'at', 'low', 'temperature', 'a', 'large', 'supercurrent', 'flows', 'through', 'the', 'device', 'the', 'dc', 'squidlike', 'geometry', 'leads', 'to', 'an', 'almost', 'complete', 'periodic', 'modulation', 'of', 'the', 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708.0206 | Algebraic K-theory and abstract homotopy theory | We decompose the K-theory space of a Waldhausen category in terms of its
Dwyer-Kan simplicial localization. This leads to a criterion for functors to
induce equivalences of K-theory spectra that generalizes and explains many of
the criteria appearing in the literature. We show that under mild hypotheses, a
weakly exact functor that induces an equivalence of homotopy categories induces
an equivalence of K-theory spectra.
| math.KT math.AT | we decompose the ktheory space of a waldhausen category in terms of its dwyerkan simplicial localization this leads to a criterion for functors to induce equivalences of ktheory spectra that generalizes and explains many of the criteria appearing in the literature we show that under mild hypotheses a weakly exact functor that induces an equivalence of homotopy categories induces an equivalence of ktheory spectra | [['we', 'decompose', 'the', 'ktheory', 'space', 'of', 'a', 'waldhausen', 'category', 'in', 'terms', 'of', 'its', 'dwyerkan', 'simplicial', 'localization', 'this', 'leads', 'to', 'a', 'criterion', 'for', 'functors', 'to', 'induce', 'equivalences', 'of', 'ktheory', 'spectra', 'that', 'generalizes', 'and', 'explains', 'many', 'of', 'the', 'criteria', 'appearing', 'in', 'the', 'literature', 'we', 'show', 'that', 'under', 'mild', 'hypotheses', 'a', 'weakly', 'exact', 'functor', 'that', 'induces', 'an', 'equivalence', 'of', 'homotopy', 'categories', 'induces', 'an', 'equivalence', 'of', 'ktheory', 'spectra']] | [-0.18992066982900724, 0.018549936944054934, -0.14537018947885372, 0.12634306985091825, -0.055158892850158736, -0.10715991789766122, -0.02496301990140637, 0.3780019354016986, -0.4067868731144699, -0.20074493254651316, 0.009848172350757523, -0.1723909307147551, -0.1766850919375429, 0.17208206560462713, -0.26192082006309647, -0.12330157958876953, 0.09355705276539084, 0.06618690284813056, -0.09827853253591456, -0.21635886981675867, 0.4727426196623128, -9.546102592139505e-05, 0.2870789025462841, 0.07097201725537161, 0.11994486092578427, -0.018287701699591707, 0.012731497074128129, 0.016832711822189594, -0.14474216975565923, 0.14361214303062297, 0.3350221606087871, 0.09615972946630791, 0.17110976060575922, -0.35524605578393675, -0.0756878983520437, 0.1961603885720251, 0.0733940643403912, 0.05600282377417898, -0.010287531111316639, -0.3350881952646887, 0.1401477482431801, -0.20775961931212805, -0.06102495137020014, -0.1253049797960557, 0.055823520524427295, -0.01512431280571036, -0.2824431140907109, -0.022472417789686006, 0.1497216626739828, 0.11763173207873479, -0.17649343703124032, 0.020694192426162772, -0.08010953839402646, 0.12435083043965278, 0.034924311039503664, -0.03276766092676553, 0.12841855616716202, -0.12876426626098691, -0.15191250912903342, 0.3979704657540424, -0.08562759865890257, -0.14485800809052307, 0.18717914179433137, -0.0911606475347071, -0.2105363587033935, 0.18529489602224203, -0.039126509727793746, 0.14811627623566892, -0.02533918213157449, 0.21924601278351474, -0.1600221312546637, 0.09947161846866948, 0.0989851966733113, 0.07188624188711401, 0.09562080992327537, 0.06485727441031486, 0.08650741331712197, 0.17854740760230925, 0.0025691076298244298, -0.04827015749469865, -0.31977554166223854, -0.19603827159698994, -0.02928209674428217, 0.11745842182767774, -0.0868874960794983, -0.22691256257530767, 0.41606501937349094, 0.16633981540508103, 0.24127067323024676, 0.1900590333971195, 0.22911734617082402, 0.06127302310051164, 0.035107901797744034, -0.07735396979114739, 0.17117573475115933, 0.2727418129798025, -0.015113680325157475, -0.08925605766125955, -0.003089372876274865, 0.2792331106893471] |
708.0207 | Restless pions: orbifold boundary conditions and noise suppression in
lattice QCD | The study of one or more baryons in lattice QCD is severely hindered by the
exponential decay in time of the signal-to-noise ratio. The rate at which the
signal-to-noise decreases is a function of the the pion mass. More precisely,
it depends on the minimum allowed pion energy in the box, which, for periodic
boundary conditions, is equal to its mass. We propose a set of boundary
conditions, given by a "parity orbifold'' construction, which eliminates the
zero momentum pion modes, raising the minimum pion energy without altering the
QCD ground state, and thereby improving the signal-to-noise ratio of
(multi)-baryon correlation functions at long Euclidean times. We discuss
variations of these "restless pions" boundary conditions and focus on their
impact on the study of nuclear forces.
| hep-lat hep-ph hep-th nucl-th | the study of one or more baryons in lattice qcd is severely hindered by the exponential decay in time of the signaltonoise ratio the rate at which the signaltonoise decreases is a function of the the pion mass more precisely it depends on the minimum allowed pion energy in the box which for periodic boundary conditions is equal to its mass we propose a set of boundary conditions given by a parity orbifold construction which eliminates the zero momentum pion modes raising the minimum pion energy without altering the qcd ground state and thereby improving the signaltonoise ratio of multibaryon correlation functions at long euclidean times we discuss variations of these restless pions boundary conditions and focus on their impact on the study of nuclear forces | [['the', 'study', 'of', 'one', 'or', 'more', 'baryons', 'in', 'lattice', 'qcd', 'is', 'severely', 'hindered', 'by', 'the', 'exponential', 'decay', 'in', 'time', 'of', 'the', 'signaltonoise', 'ratio', 'the', 'rate', 'at', 'which', 'the', 'signaltonoise', 'decreases', 'is', 'a', 'function', 'of', 'the', 'the', 'pion', 'mass', 'more', 'precisely', 'it', 'depends', 'on', 'the', 'minimum', 'allowed', 'pion', 'energy', 'in', 'the', 'box', 'which', 'for', 'periodic', 'boundary', 'conditions', 'is', 'equal', 'to', 'its', 'mass', 'we', 'propose', 'a', 'set', 'of', 'boundary', 'conditions', 'given', 'by', 'a', 'parity', 'orbifold', 'construction', 'which', 'eliminates', 'the', 'zero', 'momentum', 'pion', 'modes', 'raising', 'the', 'minimum', 'pion', 'energy', 'without', 'altering', 'the', 'qcd', 'ground', 'state', 'and', 'thereby', 'improving', 'the', 'signaltonoise', 'ratio', 'of', 'multibaryon', 'correlation', 'functions', 'at', 'long', 'euclidean', 'times', 'we', 'discuss', 'variations', 'of', 'these', 'restless', 'pions', 'boundary', 'conditions', 'and', 'focus', 'on', 'their', 'impact', 'on', 'the', 'study', 'of', 'nuclear', 'forces']] | [-0.15719553139171608, 0.20798392142982236, -0.0610188784554512, 0.10058131272856531, -0.03244277528331926, -0.10256705914313595, 0.09512139901348818, 0.3233643966497824, -0.18334591214264195, -0.25654723391025547, 0.0845904742831379, -0.2571041966004977, -0.014999844259508545, 0.12145125289772829, -0.0012719455241624797, 0.09320230347368615, 0.06008705363741943, 0.07079975821432613, -0.11660340293088839, -0.22730757798888676, 0.3869862923664706, 0.09517872371592574, 0.2575220187695416, 0.1520320768172424, 0.07394875079349038, 0.0241474355423143, -0.03175375318997318, -0.04405688022130302, -0.15548001300720943, 0.03638890283256178, 0.15224339320723498, 0.07053298059303964, 0.218077589683826, -0.38393253376263947, -0.16643045964398576, 0.16261322753474353, 0.1251063199662086, 0.08564259993219157, 0.005996486393592527, -0.2485504214031001, 0.08081744312371555, -0.13235361602098222, -0.15995129127247584, -0.031619412114932424, 0.006257665554238926, -0.0009093759544489403, -0.2871081954134362, 0.09973600947128106, -0.00931748897687251, 0.0262264195452666, -0.08457161774507739, -0.17433650685208185, -0.03160129139931606, 0.09842485117186452, 0.10161772658050593, 0.05846165609176433, 0.14837510487256897, -0.2048462250210818, -0.055988555644280354, 0.397392412056289, -0.031692865482043656, -0.21910310427968702, 0.1458714731141097, -0.17198134551475208, -0.07570700406555146, 0.16851224634234632, 0.1751472028194084, 0.10882053350556702, -0.13435358118029342, 0.07998043535155289, -0.026397065108915464, 0.19374503712687227, 0.13676743381582793, 0.07936078990395698, 0.2227679572977303, 0.16315036844037148, 0.08236458533931346, 0.13361933114864524, -0.07939889916174468, -0.08097576486715485, -0.2966310939795914, -0.10493595297804051, -0.17445455976237084, 0.08410378960182979, -0.132706535462473, -0.14969640517134278, 0.39394985914732966, 0.09655757691149437, 0.24967577179805153, 0.0602450770416504, 0.31567568038146765, 0.1512771994458735, 0.07725877050007324, 0.06653627172861543, 0.25224136484469034, 0.1289292766106507, 0.11282374222979083, -0.32746199648162083, 0.01612479077459919, 0.08542485677614986] |
708.0208 | Collective oscillations in optical matter | Atom and nanoparticle arrays trapped in optical lattices are shown to be
capable of sustaining collective oscillations of frequency proportional to the
strength of the external light field. The spectrum of these oscillations
determines the mechanical stability of the arrays. This phenomenon is studied
for dimers, strings, and two-dimensional planar arrays. Laterally confined
particles free to move along an optical channel are also considered as an
example of collective motion in partially-confined systems. The fundamental
concepts of dynamical response in optical matter introduced here constitute the
basis for potential applications to quantum information technology and signal
processing. Experimental realizations of these systems are proposed.
| cond-mat.soft cond-mat.other | atom and nanoparticle arrays trapped in optical lattices are shown to be capable of sustaining collective oscillations of frequency proportional to the strength of the external light field the spectrum of these oscillations determines the mechanical stability of the arrays this phenomenon is studied for dimers strings and twodimensional planar arrays laterally confined particles free to move along an optical channel are also considered as an example of collective motion in partiallyconfined systems the fundamental concepts of dynamical response in optical matter introduced here constitute the basis for potential applications to quantum information technology and signal processing experimental realizations of these systems are proposed | [['atom', 'and', 'nanoparticle', 'arrays', 'trapped', 'in', 'optical', 'lattices', 'are', 'shown', 'to', 'be', 'capable', 'of', 'sustaining', 'collective', 'oscillations', 'of', 'frequency', 'proportional', 'to', 'the', 'strength', 'of', 'the', 'external', 'light', 'field', 'the', 'spectrum', 'of', 'these', 'oscillations', 'determines', 'the', 'mechanical', 'stability', 'of', 'the', 'arrays', 'this', 'phenomenon', 'is', 'studied', 'for', 'dimers', 'strings', 'and', 'twodimensional', 'planar', 'arrays', 'laterally', 'confined', 'particles', 'free', 'to', 'move', 'along', 'an', 'optical', 'channel', 'are', 'also', 'considered', 'as', 'an', 'example', 'of', 'collective', 'motion', 'in', 'partiallyconfined', 'systems', 'the', 'fundamental', 'concepts', 'of', 'dynamical', 'response', 'in', 'optical', 'matter', 'introduced', 'here', 'constitute', 'the', 'basis', 'for', 'potential', 'applications', 'to', 'quantum', 'information', 'technology', 'and', 'signal', 'processing', 'experimental', 'realizations', 'of', 'these', 'systems', 'are', 'proposed']] | [-0.19033659774196657, 0.2293062241473168, -0.010327339821602576, 0.006314800479091131, -0.022151245525142606, -0.1414819391357014, -0.01094991516527863, 0.40256715967104983, -0.27684785508944726, -0.2764870513123102, 0.07390221481574162, -0.2788508856812349, -0.1652284050763298, 0.23067569127306342, -0.007970594242439032, 0.07919042797080832, 0.015675903374078468, 0.027231676360735528, 0.029208555047471937, -0.184744562398499, 0.22889075220043126, 0.07711598637783587, 0.3199826515270755, 0.027631138290206973, 0.07105904968025592, 0.023185956385882143, 0.03093760353154861, 0.004980832687579095, -0.10967730500431991, 0.1289713985617989, 0.22546105309111925, 0.02702297085824494, 0.20453788107261062, -0.47693936994227654, -0.239560524153953, 0.09834693186880591, 0.1898750536112437, 0.15047034434974194, -0.07520359741129841, -0.2886546366767456, -0.006471543666870834, -0.11946330380697663, -0.18070247061908817, -0.07473426801152527, 0.05120537874776906, 0.07953022605327603, -0.22116710053076252, 0.046782398020765795, 0.06515405809169841, 0.06532655479475999, -0.08215563067754444, -0.054080668509973645, 0.017032005188341897, 0.11535225679668096, -0.03088451794330747, -0.03569588843450989, 0.1954905071761459, -0.1409977639789129, -0.13912731951299626, 0.41247734291335714, -0.03422973434946751, -0.18703610191271133, 0.19506482515414694, -0.1352824515354139, -0.04418456266508796, 0.12987074887272543, 0.20231527892890602, 0.04846763268757898, -0.15805780960923024, 0.036950097140036706, 0.003866100862908822, 0.17345840252192618, 0.07949609741067085, 0.13736269599758089, 0.30390192443827313, 0.18471609444196263, 0.03253486242969162, 0.17007826207799764, -0.07563367460925992, -0.10157032668268165, -0.2401157438647575, -0.13983785803429782, -0.20104817253573296, 0.007644554635939689, -0.02456368519345303, -0.1891113309771194, 0.38199591489347556, 0.12412889137899932, 0.12670526415772307, -0.056957273855984494, 0.2725501903623808, 0.09576989594699206, 0.06934302785129358, -0.005938478859696681, 0.2881798857303623, 0.20664027019385964, 0.09474028938879761, -0.2553352105661851, -0.05612180907673274, 0.0062038518260054] |
708.0209 | Models of Financial Markets with Extensive Participation Incentives | We consider models of financial markets in which all parties involved find
incentives to participate. Strategies are evaluated directly by their virtual
wealths. By tuning the price sensitivity and market impact, a phase diagram
with several attractor behaviors resembling those of real markets emerge,
reflecting the roles played by the arbitrageurs and trendsetters, and including
a phase with irregular price trends and positive sums. The positive-sumness of
the players' wealths provides participation incentives for them. Evolution and
the bid-ask spread provide mechanisms for the gain in wealth of both the
players and market-makers. New players survive in the market if the
evolutionary rate is sufficiently slow. We test the applicability of the model
on real Hang Seng Index data over 20 years. Comparisons with other models show
that our model has a superior average performance when applied to real
financial data.
| q-fin.TR physics.soc-ph | we consider models of financial markets in which all parties involved find incentives to participate strategies are evaluated directly by their virtual wealths by tuning the price sensitivity and market impact a phase diagram with several attractor behaviors resembling those of real markets emerge reflecting the roles played by the arbitrageurs and trendsetters and including a phase with irregular price trends and positive sums the positivesumness of the players wealths provides participation incentives for them evolution and the bidask spread provide mechanisms for the gain in wealth of both the players and marketmakers new players survive in the market if the evolutionary rate is sufficiently slow we test the applicability of the model on real hang seng index data over 20 years comparisons with other models show that our model has a superior average performance when applied to real financial data | [['we', 'consider', 'models', 'of', 'financial', 'markets', 'in', 'which', 'all', 'parties', 'involved', 'find', 'incentives', 'to', 'participate', 'strategies', 'are', 'evaluated', 'directly', 'by', 'their', 'virtual', 'wealths', 'by', 'tuning', 'the', 'price', 'sensitivity', 'and', 'market', 'impact', 'a', 'phase', 'diagram', 'with', 'several', 'attractor', 'behaviors', 'resembling', 'those', 'of', 'real', 'markets', 'emerge', 'reflecting', 'the', 'roles', 'played', 'by', 'the', 'arbitrageurs', 'and', 'trendsetters', 'and', 'including', 'a', 'phase', 'with', 'irregular', 'price', 'trends', 'and', 'positive', 'sums', 'the', 'positivesumness', 'of', 'the', 'players', 'wealths', 'provides', 'participation', 'incentives', 'for', 'them', 'evolution', 'and', 'the', 'bidask', 'spread', 'provide', 'mechanisms', 'for', 'the', 'gain', 'in', 'wealth', 'of', 'both', 'the', 'players', 'and', 'marketmakers', 'new', 'players', 'survive', 'in', 'the', 'market', 'if', 'the', 'evolutionary', 'rate', 'is', 'sufficiently', 'slow', 'we', 'test', 'the', 'applicability', 'of', 'the', 'model', 'on', 'real', 'hang', 'seng', 'index', 'data', 'over', '20', 'years', 'comparisons', 'with', 'other', 'models', 'show', 'that', 'our', 'model', 'has', 'a', 'superior', 'average', 'performance', 'when', 'applied', 'to', 'real', 'financial', 'data']] | [-0.10484319428156177, 0.09540154425789127, -0.11014706049141267, 0.11460636496935844, -0.04447044018679466, -0.15096392441983167, 0.11451040762108114, 0.4112865301184088, -0.2383837711782925, -0.30081898883100694, 0.13371930878170557, -0.3198363115783218, -0.16475255076485357, 0.1825791957734568, -0.0690047369914786, -0.020419708015095683, 0.05302947391873132, -0.011469523283182275, 0.06253838329073444, -0.33876676319364674, 0.30707552123198406, 0.026743408539600454, 0.28394881617646367, 0.02405832046743402, 0.0781021310023213, -0.010878846129710726, -0.046860275414886236, 0.010116917074477072, -0.12064805043813741, 0.11187725585865245, 0.26766151520273884, 0.13037020954296744, 0.3433559997134554, -0.43789063077822005, -0.17122696523668526, 0.15817814338081282, 0.06174219240561771, 0.0063855602404290284, -0.01818407372916586, -0.2702193971348109, 0.0194803422447562, -0.22977020629939604, -0.10047778502950887, -0.1031495665255331, 0.01989573813060285, 0.06208886326166714, -0.2946275048235954, 0.03075537221357997, 0.0002887528959206111, 0.07944466850700245, -0.05606812487771775, -0.1266343361905796, -0.06251229395882206, 0.2086989976888231, 0.11167265646571709, -0.07925492845117214, 0.12810038560465406, -0.16147375621048987, -0.1975445820097376, 0.38296801628035715, -0.056926193822128365, -0.13837576451168643, 0.1615831072629838, -0.15777542460843813, -0.0643192556177487, 0.10854060464614429, 0.20107215250969576, 0.038682043250891376, -0.11145608785627963, 0.04132207240256072, -0.013317680542471169, 0.15789029206042077, 0.05232055563975474, 0.01229235479313371, 0.18830347073217518, 0.16247068563804512, 0.06736594339390453, 0.09204450105325312, -0.024565374921117877, -0.20979509687573789, -0.21564232502065653, -0.10265471291034851, -0.10879884657647675, 0.026795559636444498, -0.16493466814997498, -0.12647170506638858, 0.40338479054810333, 0.13973584029448333, 0.16882555639511979, 0.08265821148705059, 0.2691614064555481, 0.07164578006197464, 0.018539951300992223, 0.08413140408664593, 0.19741556001198982, -0.008010771422037224, 0.17100477429264285, -0.18902970722997092, 0.1758823675043184, -0.022276875975863378] |
708.021 | Triangulated categories of matrix factorizations for regular systems of
weights with $\epsilon=-1$ | We construct a full strongly exceptional collection in the triangulated
category of graded matrix factorizations of a polynomial associated to a
non-degenerate regular system of weights whose smallest exponents are equal to
-1. In the associated Grothendieck group, the strongly exceptional collection
defines a root basis of a generalized root system of sign (l,0,2) and a Coxeter
element of finite order, whose primitive eigenvector is a regular element in
the expanded symmetric domain of type IV with respect to the Weyl group.
| math.AG math.RT | we construct a full strongly exceptional collection in the triangulated category of graded matrix factorizations of a polynomial associated to a nondegenerate regular system of weights whose smallest exponents are equal to 1 in the associated grothendieck group the strongly exceptional collection defines a root basis of a generalized root system of sign l02 and a coxeter element of finite order whose primitive eigenvector is a regular element in the expanded symmetric domain of type iv with respect to the weyl group | [['we', 'construct', 'a', 'full', 'strongly', 'exceptional', 'collection', 'in', 'the', 'triangulated', 'category', 'of', 'graded', 'matrix', 'factorizations', 'of', 'a', 'polynomial', 'associated', 'to', 'a', 'nondegenerate', 'regular', 'system', 'of', 'weights', 'whose', 'smallest', 'exponents', 'are', 'equal', 'to', '1', 'in', 'the', 'associated', 'grothendieck', 'group', 'the', 'strongly', 'exceptional', 'collection', 'defines', 'a', 'root', 'basis', 'of', 'a', 'generalized', 'root', 'system', 'of', 'sign', 'l02', 'and', 'a', 'coxeter', 'element', 'of', 'finite', 'order', 'whose', 'primitive', 'eigenvector', 'is', 'a', 'regular', 'element', 'in', 'the', 'expanded', 'symmetric', 'domain', 'of', 'type', 'iv', 'with', 'respect', 'to', 'the', 'weyl', 'group']] | [-0.20454960696898947, 0.09155458626450926, -0.0457642532816929, -0.007677252420008455, -0.11637118719972489, -0.15120523346718628, -0.00809512744805344, 0.31969490326605965, -0.37550598355691606, -0.15158006640949015, 0.1272433093002225, -0.27862829534427785, -0.13337825356823643, 0.12425379385808255, -0.08979663897941752, -0.014538210021649919, 0.05543893265606063, 0.17714613983294042, -0.12769000279921583, -0.2309726288133278, 0.39762970409923937, -0.03426451397997259, 0.23723682147882333, -0.04617689094483489, 0.11619731512384932, -0.027941363432058473, -0.039322233804297155, 0.06299505925669176, -0.07783097682219771, 0.1660776586987351, 0.2747624664590126, 0.04193050181493163, 0.20970549913429906, -0.3100570218762519, -0.06024490336592241, 0.19666945798004545, 0.15100195991988408, 0.012168279079515941, -0.021214276769414273, -0.23971365682962464, 0.16700999790848028, -0.24475479100989858, -0.23763819580625106, 0.03453216717362676, 0.07940923714465122, 0.0434726245088003, -0.28773637721315026, 0.00248029109135997, 0.054223878956513434, 0.11545491503642463, -0.03626598862976563, -0.11100547341913802, -0.04232224067900239, 0.0811525522106577, -0.09477803578157341, -0.004814835316387982, 0.057843540278376966, -0.07997039784450174, -0.10537031422107958, 0.42119140055303167, -0.02971758935515337, -0.2516562560255208, 0.13447128749656967, -0.2004962746031219, -0.09323670079636319, 0.1934990332030305, 0.11802875778705972, 0.10890785492843062, -0.04344862984584236, 0.1623192154227404, -0.10285924647639437, 0.11801658294067105, 0.044202061546057825, -0.010103019424937751, 0.15116105048076772, 0.09462431961636446, 0.05536936580135328, 0.11881203888688327, 0.03365593625192826, -0.06157831862432564, -0.3494697449865138, -0.20000335531843053, -0.20081420240514888, 0.12003004399877859, -0.15456814701060578, -0.3033737151815397, 0.4712937251641983, 0.03865509075907672, 0.1787293093029137, 0.06976777411679305, 0.13656443896953288, 0.08808316332401663, 0.10251683909900305, 0.006984924233132382, 0.08703837118100194, 0.212423907987569, -0.043776334125673534, -0.2097486748087515, 0.00701311185796995, 0.22931618559196953] |
708.0211 | The long-term evolution of the spin, pulse shape, and orbit of the
accretion-powered millisecond pulsar SAX J1808.4-3658 | We present a 7 yr timing study of the 2.5 ms X-ray pulsar SAX J1808.4-3658,
an X-ray transient with a recurrence time of ~2 yr, using data from the Rossi
X-ray Timing Explorer covering 4 transient outbursts (1998-2005). We verify
that the 401 Hz pulsation traces the spin frequency fundamental and not a
harmonic. Substantial pulse shape variability, both stochastic and systematic,
was observed during each outburst. Analysis of the systematic pulse shape
changes suggests that, as an outburst dims, the X-ray "hot spot" on the pulsar
surface drifts longitudinally and a second hot spot may appear. The overall
pulse shape variability limits the ability to measure spin frequency evolution
within a given X-ray outburst (and calls previous nudot measurements of this
source into question), with typical upper limits of |nudot| < 2.5x10^{-14} Hz/s
(2 sigma). However, combining data from all the outbursts shows with high (6
sigma) significance that the pulsar is undergoing long-term spin down at a rate
nudot = (-5.6+/-2.0)x10^{-16} Hz/s, with most of the spin evolution occurring
during X-ray quiescence. We discuss the possible contributions of magnetic
propeller torques, magnetic dipole radiation, and gravitational radiation to
the measured spin down, setting an upper limit of B < 1.5x10^8 G for the
pulsar's surface dipole magnetic field and and Q/I < 5x10^{-9} for the
fractional mass quadrupole moment. We also measured an orbital period
derivative of Pdot = (3.5+/-0.2)x10^{-12} s/s. This surprising large Pdot is
reminiscent of the large and quasi-cyclic orbital period variation observed in
the so-called "black widow" millisecond radio pulsars, supporting speculation
that SAX J1808.4-3658 may turn on as a radio pulsar during quiescence. In an
appendix we derive an improved (0.15 arcsec) source position from optical data.
| astro-ph | we present a 7 yr timing study of the 25 ms xray pulsar sax j180843658 an xray transient with a recurrence time of 2 yr using data from the rossi xray timing explorer covering 4 transient outbursts 19982005 we verify that the 401 hz pulsation traces the spin frequency fundamental and not a harmonic substantial pulse shape variability both stochastic and systematic was observed during each outburst analysis of the systematic pulse shape changes suggests that as an outburst dims the xray hot spot on the pulsar surface drifts longitudinally and a second hot spot may appear the overall pulse shape variability limits the ability to measure spin frequency evolution within a given xray outburst and calls previous nudot measurements of this source into question with typical upper limits of nudot 25x1014 hzs 2 sigma however combining data from all the outbursts shows with high 6 sigma significance that the pulsar is undergoing longterm spin down at a rate nudot 5620x1016 hzs with most of the spin evolution occurring during xray quiescence we discuss the possible contributions of magnetic propeller torques magnetic dipole radiation and gravitational radiation to the measured spin down setting an upper limit of b 15x108 g for the pulsars surface dipole magnetic field and and qi 5x109 for the fractional mass quadrupole moment we also measured an orbital period derivative of pdot 3502x1012 ss this surprising large pdot is reminiscent of the large and quasicyclic orbital period variation observed in the socalled black widow millisecond radio pulsars supporting speculation that sax j180843658 may turn on as a radio pulsar during quiescence in an appendix we derive an improved 015 arcsec source position from optical data | [['we', 'present', 'a', '7', 'yr', 'timing', 'study', 'of', 'the', '25', 'ms', 'xray', 'pulsar', 'sax', 'j180843658', 'an', 'xray', 'transient', 'with', 'a', 'recurrence', 'time', 'of', '2', 'yr', 'using', 'data', 'from', 'the', 'rossi', 'xray', 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708.0212 | Bosonization of strongly interacting electrons | Strong repulsive interactions in a one-dimensional electron system suppress
the exchange coupling J of electron spins to a value much smaller than the
Fermi energy E_F. The conventional theoretical description of such systems
based on the bosonization approach and the concept of Tomonaga-Luttinger liquid
is applicable only at energies below J. In this paper we develop a theoretical
approach valid at all energies below the Fermi energy, including a broad range
of energies between J and E_F. The method involves bosonization of the charge
degrees of freedom, while the spin excitations are treated exactly. We use this
technique to calculate the spectral functions of strongly interacting electron
systems at energies in the range J<<epsilon<< E_F$. We show that in addition to
the expected features at the wavevector k near the Fermi point k_F, the
spectral function has a strong peak centered at k=0. Our theory also provides
analytical description of the spectral function singularities near 3k_F (the
"shadow band" features).
| cond-mat.mes-hall cond-mat.str-el | strong repulsive interactions in a onedimensional electron system suppress the exchange coupling j of electron spins to a value much smaller than the fermi energy e_f the conventional theoretical description of such systems based on the bosonization approach and the concept of tomonagaluttinger liquid is applicable only at energies below j in this paper we develop a theoretical approach valid at all energies below the fermi energy including a broad range of energies between j and e_f the method involves bosonization of the charge degrees of freedom while the spin excitations are treated exactly we use this technique to calculate the spectral functions of strongly interacting electron systems at energies in the range jepsilon e_f we show that in addition to the expected features at the wavevector k near the fermi point k_f the spectral function has a strong peak centered at k0 our theory also provides analytical description of the spectral function singularities near 3k_f the shadow band features | [['strong', 'repulsive', 'interactions', 'in', 'a', 'onedimensional', 'electron', 'system', 'suppress', 'the', 'exchange', 'coupling', 'j', 'of', 'electron', 'spins', 'to', 'a', 'value', 'much', 'smaller', 'than', 'the', 'fermi', 'energy', 'e_f', 'the', 'conventional', 'theoretical', 'description', 'of', 'such', 'systems', 'based', 'on', 'the', 'bosonization', 'approach', 'and', 'the', 'concept', 'of', 'tomonagaluttinger', 'liquid', 'is', 'applicable', 'only', 'at', 'energies', 'below', 'j', 'in', 'this', 'paper', 'we', 'develop', 'a', 'theoretical', 'approach', 'valid', 'at', 'all', 'energies', 'below', 'the', 'fermi', 'energy', 'including', 'a', 'broad', 'range', 'of', 'energies', 'between', 'j', 'and', 'e_f', 'the', 'method', 'involves', 'bosonization', 'of', 'the', 'charge', 'degrees', 'of', 'freedom', 'while', 'the', 'spin', 'excitations', 'are', 'treated', 'exactly', 'we', 'use', 'this', 'technique', 'to', 'calculate', 'the', 'spectral', 'functions', 'of', 'strongly', 'interacting', 'electron', 'systems', 'at', 'energies', 'in', 'the', 'range', 'jepsilon', 'e_f', 'we', 'show', 'that', 'in', 'addition', 'to', 'the', 'expected', 'features', 'at', 'the', 'wavevector', 'k', 'near', 'the', 'fermi', 'point', 'k_f', 'the', 'spectral', 'function', 'has', 'a', 'strong', 'peak', 'centered', 'at', 'k0', 'our', 'theory', 'also', 'provides', 'analytical', 'description', 'of', 'the', 'spectral', 'function', 'singularities', 'near', '3k_f', 'the', 'shadow', 'band', 'features']] | [-0.14287566936492355, 0.15609928285312555, -0.06676022296283642, 0.08360942119741341, -0.003012566777134809, -0.1505875374290715, 0.08101657919344032, 0.3466971724889465, -0.24356268931628217, -0.2892217599798607, -0.04179046011848163, -0.34711436493487297, -0.06753333319196643, 0.17733610028554272, 0.0712236755356617, -0.007336371669640081, 0.00286583398185859, 0.025780743186927954, -0.1401792426410874, -0.14750821325895552, 0.31522740838639185, 0.08157157417257092, 0.27653587114230194, 0.1580094396832246, 0.06778295031789973, 0.07279467481170793, 0.08586030616130255, -0.010045213053073687, -0.16752858661709957, 0.08878462665561068, 0.28541514675628066, -0.06493154949437874, 0.2407939319784902, -0.36261617892740083, -0.2218510000553878, 0.03729181628249868, 0.1299734841649055, 0.11626822943946559, 0.020324319426435977, -0.241791271887531, 0.030055376317917923, -0.17014383214166318, -0.19127025824965602, -0.07884790678876982, -0.009613371119669438, 0.005961349127332303, -0.22451309492290317, 0.1294610416441139, 0.059193404117316196, 0.06553979755579671, -0.07393745099830948, -0.14889475938648905, -0.038527947835789264, 0.0200727124156171, 0.03855047579058977, 0.0583435382747056, 0.14189330355523602, -0.13692894499583902, -0.0661017466365961, 0.36113933258088704, -0.062209104191194305, -0.13157297639011206, 0.21993494517305465, -0.19889989161062277, -0.09415676119837532, 0.21796946224603284, 0.12264541149193928, 0.1130093393605674, -0.11104054582788597, 0.12585930507468013, -0.009594742751008347, 0.15782580548187106, 0.02928563524214433, 0.07716596491717367, 0.26367830442665496, 0.15433841208408622, 0.07764113960268942, 0.06909191906687957, -0.15020322640090472, -0.07241068986727844, -0.3068796013558543, -0.10094861101500596, -0.2609301083139144, 0.026448949131100803, -0.04298158245779356, -0.12575704992831319, 0.44270774852366573, 0.14411678992556645, 0.20439156411875842, 0.029267201390223506, 0.24676358828592243, 0.1686843811804016, 0.04955471278745917, 0.09139872659764052, 0.25610951267778165, 0.11317655805180062, 0.08314036496891346, -0.2638028648768882, -0.05387275690755135, 0.06335681473800936] |
708.0213 | Permutations of Strongly Self-Absorbing C*-algebras | Let G be a finite group acting on {1,...,n}. For any C*-algebra A, this
defines an action of \alpha of G on A^{\otimes n}. We show that if A
tensorially absorbs a UHF algebra of infinite type, the Jiang-Su algebra, or is
approximately divisible, then A \times_{\alpha} G has the corresponding
property as well.
| math.OA | let g be a finite group acting on 1n for any calgebra a this defines an action of alpha of g on aotimes n we show that if a tensorially absorbs a uhf algebra of infinite type the jiangsu algebra or is approximately divisible then a times_alpha g has the corresponding property as well | [['let', 'g', 'be', 'a', 'finite', 'group', 'acting', 'on', '1n', 'for', 'any', 'calgebra', 'a', 'this', 'defines', 'an', 'action', 'of', 'alpha', 'of', 'g', 'on', 'aotimes', 'n', 'we', 'show', 'that', 'if', 'a', 'tensorially', 'absorbs', 'a', 'uhf', 'algebra', 'of', 'infinite', 'type', 'the', 'jiangsu', 'algebra', 'or', 'is', 'approximately', 'divisible', 'then', 'a', 'times_alpha', 'g', 'has', 'the', 'corresponding', 'property', 'as', 'well']] | [-0.16926852611639467, 0.17965552519550934, -0.11424983531685064, -0.04785527273391684, -0.14027100300450843, -0.1523235594181137, -0.02665521573551275, 0.3974451935953564, -0.3428199444380071, -0.14175744332304155, 0.10994432403499053, -0.3022623149747098, -0.07614237189948282, 0.15486328769044053, -0.11188481715335338, -0.13730668801710838, 0.05187615930723647, 0.2539090033689583, -0.07470965888609903, -0.18761944465546143, 0.342477366414473, -0.048233091460402916, 0.1584037371514434, 0.01861714893365624, 0.1990355113779919, 0.024906337334767967, 0.05892440849156291, 0.020472444960399083, -0.10360707356920573, 0.014701735042897915, 0.23558759592749454, 0.09441346806232576, 0.3073139670132487, -0.3109833490517404, -0.13291251680089367, 0.2569860766848756, 0.14135181485606288, -0.09297138058011317, -0.03018806382789518, -0.23608649139189058, 0.1617920085684293, -0.32406190337820184, -0.12141377789278825, -0.0036215675063431263, 0.1664069848549035, -0.06910151637297261, -0.3616688408957863, -0.046364814732913616, 0.1170612489826184, 0.08428684609976632, -0.04231650604762965, -0.08949917911862333, -0.13367319274779962, 0.0954183799137051, -0.12521142050779113, 0.06207883739154096, 0.13350218649160256, -0.02844438071931816, -0.10262467564057766, 0.4228647600997377, -0.09266632890190792, -0.2085037828526563, 0.0887372045415557, -0.22668994161196881, -0.1727209097524691, 0.09038141723377285, 0.05223259866168654, 0.17146616829214273, 0.008009717316815147, 0.3072939310567798, -0.19502282315106304, 0.15648039318276225, 0.03217680731581317, -0.00962132499208329, 0.08828478035758491, 0.08971091705219199, 0.15294394950830825, 0.14008687849423881, 0.11958622483157173, 0.1657496423770984, -0.3807125808153715, -0.162565713920803, -0.18551865482219942, 0.2593739946131353, -0.0827216173272097, -0.1975791683071293, 0.33648674603965545, 0.03952620242273918, 0.15866910042758617, 0.10073887608531448, 0.18855836282104807, 0.14743928379956978, 0.1174672983966216, 0.1279417938914978, 0.044510246448529266, 0.235100898749402, -0.11181195252747447, -0.1631244491716778, -0.03481467429514008, 0.22581173724460382] |
708.0214 | Helioseismic Holography of Simulated Solar Convection and Prospects for
the Detection of Small-Scale Subsurface Flows | We perform helioseismic holography on realistic solar convection simulations
and compare the observed travel-time perturbations with the expected travel
times from the horizontal flows in the simulations computed from forward models
under the assumption of the Born approximation. We demonstrate reasonable
agreement between the observed and model travel times which reinforces the
validity of helioseismic holography in the detection of subsurface horizontal
flows. From the variation of the signal-to-noise ratio with depth, we conclude
that the helioseismic detection of individual flow structures with spatial
scales of supergranulation or smaller is not possible for depths below about 5
Mm below the surface over time scales less than a day. Approximately half of
the observed signal originates within the first 2 Mm below the surface. A
consequence of this is a rapid decrease (and reversal in some cases) of the
travel-time perturbations with depth due to the contribution to the
measurements of oppositely directed surface flows in neighboring convective
cells. This confirms an earlier interpretation of similar effects reported from
observations.
| astro-ph | we perform helioseismic holography on realistic solar convection simulations and compare the observed traveltime perturbations with the expected travel times from the horizontal flows in the simulations computed from forward models under the assumption of the born approximation we demonstrate reasonable agreement between the observed and model travel times which reinforces the validity of helioseismic holography in the detection of subsurface horizontal flows from the variation of the signaltonoise ratio with depth we conclude that the helioseismic detection of individual flow structures with spatial scales of supergranulation or smaller is not possible for depths below about 5 mm below the surface over time scales less than a day approximately half of the observed signal originates within the first 2 mm below the surface a consequence of this is a rapid decrease and reversal in some cases of the traveltime perturbations with depth due to the contribution to the measurements of oppositely directed surface flows in neighboring convective cells this confirms an earlier interpretation of similar effects reported from observations | [['we', 'perform', 'helioseismic', 'holography', 'on', 'realistic', 'solar', 'convection', 'simulations', 'and', 'compare', 'the', 'observed', 'traveltime', 'perturbations', 'with', 'the', 'expected', 'travel', 'times', 'from', 'the', 'horizontal', 'flows', 'in', 'the', 'simulations', 'computed', 'from', 'forward', 'models', 'under', 'the', 'assumption', 'of', 'the', 'born', 'approximation', 'we', 'demonstrate', 'reasonable', 'agreement', 'between', 'the', 'observed', 'and', 'model', 'travel', 'times', 'which', 'reinforces', 'the', 'validity', 'of', 'helioseismic', 'holography', 'in', 'the', 'detection', 'of', 'subsurface', 'horizontal', 'flows', 'from', 'the', 'variation', 'of', 'the', 'signaltonoise', 'ratio', 'with', 'depth', 'we', 'conclude', 'that', 'the', 'helioseismic', 'detection', 'of', 'individual', 'flow', 'structures', 'with', 'spatial', 'scales', 'of', 'supergranulation', 'or', 'smaller', 'is', 'not', 'possible', 'for', 'depths', 'below', 'about', '5', 'mm', 'below', 'the', 'surface', 'over', 'time', 'scales', 'less', 'than', 'a', 'day', 'approximately', 'half', 'of', 'the', 'observed', 'signal', 'originates', 'within', 'the', 'first', '2', 'mm', 'below', 'the', 'surface', 'a', 'consequence', 'of', 'this', 'is', 'a', 'rapid', 'decrease', 'and', 'reversal', 'in', 'some', 'cases', 'of', 'the', 'traveltime', 'perturbations', 'with', 'depth', 'due', 'to', 'the', 'contribution', 'to', 'the', 'measurements', 'of', 'oppositely', 'directed', 'surface', 'flows', 'in', 'neighboring', 'convective', 'cells', 'this', 'confirms', 'an', 'earlier', 'interpretation', 'of', 'similar', 'effects', 'reported', 'from', 'observations']] | [-0.10829657691182326, 0.17465112960462378, -0.03410113764893726, 0.07545686437136676, -0.005837185947588209, -0.033432721576416455, 0.037037826914714994, 0.3638319574109108, -0.2504877011352301, -0.34157400805304744, 0.0941735138626185, -0.28699804152521863, -0.11586998965585682, 0.2189189505215029, -0.029433019989660594, 0.0099771795095187, 0.07183993296675692, 0.013550983521448085, -0.09603153896199804, -0.1631817615221767, 0.23967825895803568, 0.08921715447998788, 0.2660527447150392, 0.026158316750782017, 0.061684531743842114, -0.06902828519149909, -0.0798084903411986, 0.04016544631780799, -0.13009813726217845, 0.08300219242014652, 0.16715743260044544, 0.08177811021850438, 0.20019664121626396, -0.4957159412749244, -0.2733622688087828, 0.06263271785071174, 0.12772773377068297, 0.09459483708852913, 0.0006625033555464191, -0.2604719207363104, 0.08210602284067438, -0.07353981101014734, -0.12178216326276403, 0.04834484772966106, 0.02351770083800223, -0.009841625082730895, -0.24136066284807697, 0.14577989570366648, 0.02966755273277987, 0.13045323660256913, -0.10926988325770613, -0.09678320576761953, -0.06396594809191908, 0.127088502598458, 0.10951519624148248, 0.040549842731685506, 0.12246902067952696, -0.1238799821833402, -0.06083908483569273, 0.3799609775577821, -0.10742434781065731, -0.1127415286768338, 0.1854666819900671, -0.22212426605794203, -0.06386164782469618, 0.1828011653810387, 0.16855905623555448, 0.11876958502544718, -0.0753464959120962, -0.017360314298021613, -0.05686246014211173, 0.20391132398343165, 0.09943299410870221, -0.02341688712050528, 0.22720399510512163, 0.18727050356831423, 0.08868774772448101, 0.08039897219856551, -0.21790594256692428, -0.08117698270244766, -0.2931800366340745, -0.09571547457430313, -0.12083823230467494, 0.06140508896062638, -0.11824938321471305, -0.12738114357898397, 0.3763318890264842, 0.20518858508157306, 0.2303558162402516, 0.08125532866585118, 0.3428167050274519, 0.09454303391769628, 0.11039348998514814, 0.10626984387636185, 0.3004732533620144, 0.1820082577254028, 0.1358995146948855, -0.22775008353492873, 0.07165353170171733, 0.01445226804298189] |
708.0215 | Comments on the Invariance of Physical Laws Under Particle
Re-Arrangement | Observationally and experimentally, physical laws express how particles
interact. Conversely, physical laws should be invariant under any
re-arrangement of those particles, e.g., the laws of gravity do not change if
one re-arranges the stars in the sky. To explore the physical meaning of these
assertions, arguments are presented that show how the freedom of particle
re-arrangement leads to an identical twin associated with any photon, i.e.,
nature sees double. These twins can become spatially separated for
astronomically distant objects and are special in that detection of the one
causes the disappearance of the other. A tilting detector then leads to
brightness variations across an image for twin separations on the order of the
detector size.
| gr-qc | observationally and experimentally physical laws express how particles interact conversely physical laws should be invariant under any rearrangement of those particles eg the laws of gravity do not change if one rearranges the stars in the sky to explore the physical meaning of these assertions arguments are presented that show how the freedom of particle rearrangement leads to an identical twin associated with any photon ie nature sees double these twins can become spatially separated for astronomically distant objects and are special in that detection of the one causes the disappearance of the other a tilting detector then leads to brightness variations across an image for twin separations on the order of the detector size | [['observationally', 'and', 'experimentally', 'physical', 'laws', 'express', 'how', 'particles', 'interact', 'conversely', 'physical', 'laws', 'should', 'be', 'invariant', 'under', 'any', 'rearrangement', 'of', 'those', 'particles', 'eg', 'the', 'laws', 'of', 'gravity', 'do', 'not', 'change', 'if', 'one', 'rearranges', 'the', 'stars', 'in', 'the', 'sky', 'to', 'explore', 'the', 'physical', 'meaning', 'of', 'these', 'assertions', 'arguments', 'are', 'presented', 'that', 'show', 'how', 'the', 'freedom', 'of', 'particle', 'rearrangement', 'leads', 'to', 'an', 'identical', 'twin', 'associated', 'with', 'any', 'photon', 'ie', 'nature', 'sees', 'double', 'these', 'twins', 'can', 'become', 'spatially', 'separated', 'for', 'astronomically', 'distant', 'objects', 'and', 'are', 'special', 'in', 'that', 'detection', 'of', 'the', 'one', 'causes', 'the', 'disappearance', 'of', 'the', 'other', 'a', 'tilting', 'detector', 'then', 'leads', 'to', 'brightness', 'variations', 'across', 'an', 'image', 'for', 'twin', 'separations', 'on', 'the', 'order', 'of', 'the', 'detector', 'size']] | [-0.11736617590422216, 0.22390799191400773, -0.10429382052110589, 0.09112537029280286, -0.08006670774649019, -0.13871152955714774, -0.0034905004315078257, 0.3512901035501905, -0.2705788639698016, -0.3450643594255266, 0.04116532907254346, -0.2879035455883359, -0.08260271738728751, 0.17078108471899253, -0.0865205484027367, -0.018286081415641565, 0.03332011929672697, 0.05279092044448075, -0.0627038550482172, -0.22108218650050138, 0.325910919911795, 0.028409711652151916, 0.220309031114954, 0.012697141859984107, 0.09449568188384823, -0.02040918429746576, -0.025942802834122078, 0.017773585054901956, -0.08742412180986518, 0.06746011369092308, 0.2201767381321153, 0.11017502967430198, 0.191490306927944, -0.4286116688147835, -0.18863271344453097, 0.11323436254068561, 0.15497461057548997, 0.0829523565409624, -0.028914175109694833, -0.25548399422601187, 0.07447763817870746, -0.12379854861646891, -0.17981052018054153, -0.03121848963201046, 0.03680102152587927, 0.036670142250216524, -0.21735664397154164, 0.061378366489003855, 0.08239707683071332, 0.03174979738162263, -0.07465398907003439, -0.03850819658407051, -0.04165603108299167, 0.137879336738716, 0.046169076429720485, -0.03570795101721002, 0.17063553628876157, -0.12366021954171036, -0.11943484377318427, 0.41046579953121104, 0.009132534587431861, -0.22002017373755656, 0.25757120375561976, -0.1863251242381723, -0.13184567541693865, 0.135112332801699, 0.13117744380851154, 0.09893294959733992, -0.14937118387416654, 0.020279435844808492, -0.015427847607972344, 0.18864067451744948, 0.1163973645509585, 0.10177970203955698, 0.29556130321453444, 0.07620739590214647, 0.05581973391463575, 0.10418263587888087, -0.13218574631483415, -0.09519585711152657, -0.3357687841129044, -0.15030315776719996, -0.14385687050045184, 0.04361726234517688, -0.0911406124089136, -0.16905482386684287, 0.3608782980206382, 0.15835265741055912, 0.19316476879479444, 0.011184088952343345, 0.2318260110023877, 0.06912167273542803, 0.12115919772616547, 0.025640085590598376, 0.30054580772538547, 0.10106471587458382, 0.06986844241821571, -0.20823280779118447, 0.09342482458071216, 0.018537693389731904] |
708.0216 | Modulation effects on Landau levels in a monolayer graphene | A monolayer graphene exists in an environment where a uniform magnetic field
interacts a spatially modulated magnetic field. The spatially modulated
magnetic field could affect Landau levels due to a uniform magnetic field. The
modulation effects on Landau levels are investigated through the Peierl's
tight-binding model. The magneto-electronic properties are dominated by the
period, the strength, and the direction of a spatially modulated magnetic
field. Such a field could induce the growth in dimensionality, the change of
energy dispersions, the destroy of state degeneracy, and the creation of
band-edge states. There are a robust Landau level at Fermi level and 1D
parabolic subbands located around the original Landau levels, which make
density of states exhibit a delta-function-like structure and many pairs of
asymmetric peak structure, respectively. The density of states and the energies
of band-edge states strongly depend on the strength, but not on the period and
the direction.
| cond-mat.mes-hall | a monolayer graphene exists in an environment where a uniform magnetic field interacts a spatially modulated magnetic field the spatially modulated magnetic field could affect landau levels due to a uniform magnetic field the modulation effects on landau levels are investigated through the peierls tightbinding model the magnetoelectronic properties are dominated by the period the strength and the direction of a spatially modulated magnetic field such a field could induce the growth in dimensionality the change of energy dispersions the destroy of state degeneracy and the creation of bandedge states there are a robust landau level at fermi level and 1d parabolic subbands located around the original landau levels which make density of states exhibit a deltafunctionlike structure and many pairs of asymmetric peak structure respectively the density of states and the energies of bandedge states strongly depend on the strength but not on the period and the direction | [['a', 'monolayer', 'graphene', 'exists', 'in', 'an', 'environment', 'where', 'a', 'uniform', 'magnetic', 'field', 'interacts', 'a', 'spatially', 'modulated', 'magnetic', 'field', 'the', 'spatially', 'modulated', 'magnetic', 'field', 'could', 'affect', 'landau', 'levels', 'due', 'to', 'a', 'uniform', 'magnetic', 'field', 'the', 'modulation', 'effects', 'on', 'landau', 'levels', 'are', 'investigated', 'through', 'the', 'peierls', 'tightbinding', 'model', 'the', 'magnetoelectronic', 'properties', 'are', 'dominated', 'by', 'the', 'period', 'the', 'strength', 'and', 'the', 'direction', 'of', 'a', 'spatially', 'modulated', 'magnetic', 'field', 'such', 'a', 'field', 'could', 'induce', 'the', 'growth', 'in', 'dimensionality', 'the', 'change', 'of', 'energy', 'dispersions', 'the', 'destroy', 'of', 'state', 'degeneracy', 'and', 'the', 'creation', 'of', 'bandedge', 'states', 'there', 'are', 'a', 'robust', 'landau', 'level', 'at', 'fermi', 'level', 'and', '1d', 'parabolic', 'subbands', 'located', 'around', 'the', 'original', 'landau', 'levels', 'which', 'make', 'density', 'of', 'states', 'exhibit', 'a', 'deltafunctionlike', 'structure', 'and', 'many', 'pairs', 'of', 'asymmetric', 'peak', 'structure', 'respectively', 'the', 'density', 'of', 'states', 'and', 'the', 'energies', 'of', 'bandedge', 'states', 'strongly', 'depend', 'on', 'the', 'strength', 'but', 'not', 'on', 'the', 'period', 'and', 'the', 'direction']] | [-0.22306558587775885, 0.23931624847606853, -0.034208940890939565, 0.06577032797535469, -0.009996308598217348, -0.10328387970342331, 0.054841732334395585, 0.38857890390197203, -0.28301602449180596, -0.30006307808857335, 0.008360632509305674, -0.22906957823633148, -0.09656515004950882, 0.1477245255998467, 0.045361963785159706, -0.06222201124983746, 0.007016594333014757, 0.026972635736651467, -0.05439890573588794, -0.18174725184107712, 0.33971715283473863, 0.06353202107793733, 0.34541719960948863, 0.06321644931156563, 0.04507996551004932, 0.0018706140170911415, 0.09901337586648, 0.03194279579333211, -0.09876429408026122, 0.05974899766022877, 0.17129068220059243, -0.08865961709666072, 0.2491153835619006, -0.4513611665508091, -0.21083117779359947, 0.016162315583569092, 0.12096902932159152, 0.14299575729067468, -0.05893347761046842, -0.3180483916349359, 0.011891945065217931, -0.09310818391058269, -0.1640323031937466, -0.04154694521012122, -0.022929998116267707, 0.02148356103149224, -0.2460493670046742, 0.1409589933769015, 0.03804485354066245, 0.07567387986803215, -0.13998597824552264, -0.1002191231842309, -0.1264815105894118, 0.07318113731445382, 0.02857427232220594, 0.06189219530354623, 0.17624094207527352, -0.1697366226733281, -0.09526206124355178, 0.3462901736340867, -0.08995958097785361, -0.15884562338008576, 0.18499118059361042, -0.19254392997405473, -0.06524892358481259, 0.19264588517218129, 0.14715214349929517, 0.055803703941129795, -0.05769164638121881, 0.11247506126020754, 0.016229630219781358, 0.2013476266066275, 0.07728036005837505, 0.08707336958297747, 0.29595146780746096, 0.10648949608486458, 0.06462037944330228, 0.09483018994093842, -0.16658669335911389, -0.07923476529876458, -0.22779142460942067, -0.11431886015722416, -0.17547365486459343, 0.03555239359816949, -0.016887801429983414, -0.23906769710061634, 0.49928276772742103, 0.09910612219738331, 0.2025000516281482, -0.06660261168222774, 0.22268370318542166, 0.19666670563461996, 0.0562856841694498, 0.07205840074140797, 0.25852015686702706, 0.1914227329672708, 0.07413018073405346, -0.25754070445901445, 0.03436685373206567, -0.02327741616586811] |
708.0217 | Impurity induced density of states and residual transport in nonunitary
superconductors | We obtain general expressions for the residual density of states, electrical
conductivity and thermal conductivity for non-unitary superconductors due to
impurity scattering. We apply the results to the so-called `B phase' of
PrOs4Sb12, which we describe using a non-unitary gap function derived from
symmetry considerations. The conductivity tensor has inequivalent diagonal
components due to off-axis nodal positions which may be detectable in
experiments.
| cond-mat.supr-con cond-mat.str-el | we obtain general expressions for the residual density of states electrical conductivity and thermal conductivity for nonunitary superconductors due to impurity scattering we apply the results to the socalled b phase of pros4sb12 which we describe using a nonunitary gap function derived from symmetry considerations the conductivity tensor has inequivalent diagonal components due to offaxis nodal positions which may be detectable in experiments | [['we', 'obtain', 'general', 'expressions', 'for', 'the', 'residual', 'density', 'of', 'states', 'electrical', 'conductivity', 'and', 'thermal', 'conductivity', 'for', 'nonunitary', 'superconductors', 'due', 'to', 'impurity', 'scattering', 'we', 'apply', 'the', 'results', 'to', 'the', 'socalled', 'b', 'phase', 'of', 'pros4sb12', 'which', 'we', 'describe', 'using', 'a', 'nonunitary', 'gap', 'function', 'derived', 'from', 'symmetry', 'considerations', 'the', 'conductivity', 'tensor', 'has', 'inequivalent', 'diagonal', 'components', 'due', 'to', 'offaxis', 'nodal', 'positions', 'which', 'may', 'be', 'detectable', 'in', 'experiments']] | [-0.13517913566015305, 0.18999731398209752, -0.07387385833712798, 0.027011352354690196, -0.0738366935106497, -0.15749308272516208, 0.07257013806393223, 0.3632701182209458, -0.254265390853915, -0.21780306987819217, 0.06678299799317583, -0.30240338793881827, -0.14681671274500707, 0.150661600605836, -0.009424802802857898, 0.03598957230883931, -0.0036912115275978094, -0.02807567097128384, -0.1700528777751421, -0.17760121560699882, 0.31565039563510155, 0.023198931145348718, 0.30824490617369377, 0.12135514845362022, 0.035907689955026384, 0.016613512639961546, 0.04419140877675206, 0.04516937605859268, -0.12469070330114355, 0.06737838561613378, 0.2917745380832385, -0.025071722056184496, 0.06978874255917848, -0.4686293686104436, -0.2022215858959253, 0.08619961630375612, 0.1050232688467654, 0.1821739665299122, -0.02668155024256853, -0.28559904343019876, 0.035889474645493524, -0.16513467427816184, -0.17109042145164002, -0.15128013767331602, 0.003828709176371968, -0.07095885512581657, -0.257376994471997, 0.14521501381710145, 0.04057529280405669, 0.020885285433559192, -0.11251311012292428, -0.16721423330812876, -0.03234075134738334, 0.08049379357890714, 0.06655692713453419, -0.018694512967375062, 0.12419113732083509, -0.12236666745905365, -0.08273648593338236, 0.3655057659165727, -0.08012560931300479, -0.13204041306698133, 0.14305823003237564, -0.1414849474649167, -0.0670824565643829, 0.14749053686798091, 0.15482560784689017, 0.07659754777208917, -0.15001343132277567, 0.08238706637140629, -0.03129552058794255, 0.10940967898978482, 0.04922127418427004, 0.07635342246679117, 0.23362064079218914, 0.062461798818456746, 0.04609487670931562, 0.17258174262297826, -0.12326932649519885, -0.030828344436096295, -0.28059875027882675, -0.14632571878887357, -0.22201482573568465, 0.10044402089561262, -0.05554033807707056, -0.18122851248416635, 0.4319324606349544, 0.16439739637823392, 0.2034506943115654, -0.004794759361723822, 0.2377403113133614, 0.1933119548189025, 0.11677727514659868, 0.07105053259828498, 0.23839699553828392, 0.22195471532361966, 0.07147456143820097, -0.2966372895032345, 0.03043857788933175, 0.06184465117708203] |
708.0218 | Spin measurements for 147Sm+n resonances: Further evidence for
non-statistical effects | We have determined the spins J of resonances in the 147Sm(n,gamma) reaction
by measuring multiplicities of gamma-ray cascades following neutron capture.
Using this technique, we were able to determine J values for all but 14 of the
140 known resonances below En = 1 keV, including 41 firm J assignments for
resonances whose spins previously were either unknown or tentative. These new
spin assignments, together with previously determined resonance parameters,
allowed us to extract separate level spacings and neutron strength functions
for J = 3 and 4 resonances. Furthermore, several statistical test of the data
indicate that very few resonances of either spin have been missed below En =
700eV. Because a non-statistical effect recently was reported near En = 350 eV
from an analysis of 147Sm(n,alpha) data, we divided the data into two regions;
0 < En < 350 eV and 350 < En < 700 eV. Using neutron widths from a previous
measurement and published techniques for correcting for missed resonances and
for testing whether data are consistent with a Porter-Thomas distribution, we
found that the reduced-neutron-width distribution for resonances below 350 eV
is consistent with the expected Porter-Thomas distribution. On the other hand,
we found that reduced-neutron-width data in the 350 < En < 700 eV region are
inconsistent with a Porter-Thomas distribution, but in good agreement with a
chi-squared distribution having two or more degrees of freedom. We discuss
possible explanations for these observed non-statistical effects and their
possible relation to similar effects previously observed in other nuclides.
| nucl-ex nucl-th | we have determined the spins j of resonances in the 147smngamma reaction by measuring multiplicities of gammaray cascades following neutron capture using this technique we were able to determine j values for all but 14 of the 140 known resonances below en 1 kev including 41 firm j assignments for resonances whose spins previously were either unknown or tentative these new spin assignments together with previously determined resonance parameters allowed us to extract separate level spacings and neutron strength functions for j 3 and 4 resonances furthermore several statistical test of the data indicate that very few resonances of either spin have been missed below en 700ev because a nonstatistical effect recently was reported near en 350 ev from an analysis of 147smnalpha data we divided the data into two regions 0 en 350 ev and 350 en 700 ev using neutron widths from a previous measurement and published techniques for correcting for missed resonances and for testing whether data are consistent with a porterthomas distribution we found that the reducedneutronwidth distribution for resonances below 350 ev is consistent with the expected porterthomas distribution on the other hand we found that reducedneutronwidth data in the 350 en 700 ev region are inconsistent with a porterthomas distribution but in good agreement with a chisquared distribution having two or more degrees of freedom we discuss possible explanations for these observed nonstatistical effects and their possible relation to similar effects previously observed in other nuclides | [['we', 'have', 'determined', 'the', 'spins', 'j', 'of', 'resonances', 'in', 'the', '147smngamma', 'reaction', 'by', 'measuring', 'multiplicities', 'of', 'gammaray', 'cascades', 'following', 'neutron', 'capture', 'using', 'this', 'technique', 'we', 'were', 'able', 'to', 'determine', 'j', 'values', 'for', 'all', 'but', '14', 'of', 'the', '140', 'known', 'resonances', 'below', 'en', '1', 'kev', 'including', '41', 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'missed', 'resonances', 'and', 'for', 'testing', 'whether', 'data', 'are', 'consistent', 'with', 'a', 'porterthomas', 'distribution', 'we', 'found', 'that', 'the', 'reducedneutronwidth', 'distribution', 'for', 'resonances', 'below', '350', 'ev', 'is', 'consistent', 'with', 'the', 'expected', 'porterthomas', 'distribution', 'on', 'the', 'other', 'hand', 'we', 'found', 'that', 'reducedneutronwidth', 'data', 'in', 'the', '350', 'en', '700', 'ev', 'region', 'are', 'inconsistent', 'with', 'a', 'porterthomas', 'distribution', 'but', 'in', 'good', 'agreement', 'with', 'a', 'chisquared', 'distribution', 'having', 'two', 'or', 'more', 'degrees', 'of', 'freedom', 'we', 'discuss', 'possible', 'explanations', 'for', 'these', 'observed', 'nonstatistical', 'effects', 'and', 'their', 'possible', 'relation', 'to', 'similar', 'effects', 'previously', 'observed', 'in', 'other', 'nuclides']] | [-0.052234248238285846, 0.17401029712691524, -0.05819406325632978, 0.10792976792436093, -0.05031765468302183, 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-0.1698838687632815, 0.04293370576924645, -0.07597820538212545] |
708.0219 | Sharp bounds on the critical stability radius for relativistic charged
spheres: I | This paper has been withdrawn since its content is included in the more
general version arXiv:0804.1882
| gr-qc | this paper has been withdrawn since its content is included in the more general version arxiv08041882 | [['this', 'paper', 'has', 'been', 'withdrawn', 'since', 'its', 'content', 'is', 'included', 'in', 'the', 'more', 'general', 'version', 'arxiv08041882']] | [-0.07450536237253497, -0.022132130774358907, -0.14982220381498337, 0.035120735069115956, -0.13302757119139036, -0.0996809747380515, -0.0818760450851793, 0.3696073258916537, -0.22717497001091638, -0.28135504896442093, 0.14612262909455845, -0.2994191266596317, -0.14198137931525706, 0.09189498921235402, -0.26526059905687965, -0.006731942920790364, 0.030320327977339426, 0.02080152208606402, -0.03601705941061179, -0.3821546584367752, 0.2699996759494146, 0.16840744415918987, 0.2564195340654502, 0.1884059672554334, -0.03180081242074569, -0.01619982225820422, -0.1263871759797136, 0.02249740113814672, -0.08914155469586452, 0.10477791335433721, 0.2077502359946569, 0.13420764361508192, 0.39845215777556103, -0.4051571131994327, -0.22347780813773474, 0.15331210419535637, 0.20448005168388286, 0.17938652491817872, -0.15944011207223716, -0.27817432284355165, 0.1914430359378457, -0.31673670013745625, -0.13541813396538296, 0.00027879408250252403, 0.1400645068536202, -0.19151858985424042, -0.1133422613143921, 0.054675191175192595, 0.13383821838845808, 0.1263177815824747, 0.04963638632713507, -0.14204097824015965, 0.006343019753694534, 0.13115216412891945, 0.13108881666945915, 0.11294791758991778, 0.0037102272113164266, -0.10543517506060501, -0.0014331597834825517, 0.48688051998615267, 0.039596312368909516, -0.27870350567003094, 0.11459674835205078, -0.05508748671660821, -0.20711790000398952, 0.10912163803974788, 0.165072020329535, 0.15881157281498115, -0.3210518171389898, 0.19933163803070783, -0.08624832226584354, 0.21215979605913163, 0.07917904419203599, 0.006803060435534765, 0.1148165709649523, 0.21102594224115212, 0.029202779568731786, 0.21047295009096464, -0.017654902674257754, -0.07679648498694101, -0.18784913197159767, -0.18313007491330305, -0.21842629926589627, 0.012739705915252367, 0.17762123346328734, -0.09864927182594935, 0.4172868549823761, 0.18656910285353662, 0.0798137774070104, -0.04840852196017901, 0.32037190248568853, 0.19434911800393215, 0.09422079036012292, 0.050968760966012876, 0.3049827714761098, 0.12517827327052752, 0.24194802846759558, -0.014977942127734423, 0.2355669589092334, 0.09640306799362103] |
708.022 | The Thermal Evolution of the Donors in AM CVn Binaries | (Abridged) We calculate the full stellar-structural evolution of donors in AM
CVn systems formed through the WD channel coupled to the binary's evolution.
Contrary to assumptions made in prior modelling, these donors are not fully
convective over much of the AM CVn phase and do not evolve adiabatically under
mass loss indefinitely. Instead, we identify three distinct phases of
evolution: a mass transfer turn-on phase (during which the orbital period
continues to decrease even after contact, the donor contracts, and the mass
transfer rate accelerates to its maximum), a phase in which the donor expands
adiabatically in response to mass loss, and a cooling phase beginning at
orbital periods of approximately 45--55 minutes during which the donor
contracts. The physics that determines the behaviour in the first and third
phases, both of which are new outcomes of this study, are discussed in some
detail. We find the overall duration of the turn-on phase to be between $\sim
10^4$-$10^6$ yrs, significantly longer than prior estimates. We predict the
donor's luminosity and effective temperature. During the adiabatic expansion
phase (ignoring irradiation effects), the luminosity is approximately
$10^{-6}$--$10^{-4} L_\odot$ and the effective temperature is approximately
1000--1800 K. However, the flux generated in the accretion flow dominates the
donor's intrinsic light at all times. The impact of irradiation on the donor
extends the phase of adiabatic expansion to longer orbital periods and alters
the donor's observational characteristics. Irradiated donors during the
adiabatic phase can attain a surface luminosity of up to $\approx10^{-2}
L_\odot$. We argue that the turn-on and cooling phases both will leave
significant imprints on the AM CVn population's orbital period distribution.
| astro-ph | abridged we calculate the full stellarstructural evolution of donors in am cvn systems formed through the wd channel coupled to the binarys evolution contrary to assumptions made in prior modelling these donors are not fully convective over much of the am cvn phase and do not evolve adiabatically under mass loss indefinitely instead we identify three distinct phases of evolution a mass transfer turnon phase during which the orbital period continues to decrease even after contact the donor contracts and the mass transfer rate accelerates to its maximum a phase in which the donor expands adiabatically in response to mass loss and a cooling phase beginning at orbital periods of approximately 4555 minutes during which the donor contracts the physics that determines the behaviour in the first and third phases both of which are new outcomes of this study are discussed in some detail we find the overall duration of the turnon phase to be between sim 104106 yrs significantly longer than prior estimates we predict the donors luminosity and effective temperature during the adiabatic expansion phase ignoring irradiation effects the luminosity is approximately 106104 l_odot and the effective temperature is approximately 10001800 k however the flux generated in the accretion flow dominates the donors intrinsic light at all times the impact of irradiation on the donor extends the phase of adiabatic expansion to longer orbital periods and alters the donors observational characteristics irradiated donors during the adiabatic phase can attain a surface luminosity of up to approx102 l_odot we argue that the turnon and cooling phases both will leave significant imprints on the am cvn populations orbital period distribution | [['abridged', 'we', 'calculate', 'the', 'full', 'stellarstructural', 'evolution', 'of', 'donors', 'in', 'am', 'cvn', 'systems', 'formed', 'through', 'the', 'wd', 'channel', 'coupled', 'to', 'the', 'binarys', 'evolution', 'contrary', 'to', 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708.0221 | Neutral hydrogen in galactic fountains | Simulations of an isolated Milky Way-like galaxy, in which supernovae power a
galactic fountain, reproduce the observed velocity and 21cm brightness
statistics of galactic neutral hydrogen (HI). The simulated galaxy consists of
a thin HI disk, similar in extent and brightness to that observed in the Milky
Way, and extra-planar neutral gas at a range of velocities due to the galactic
fountain. Mock observations of the neutral gas resemble the HI flux
measurements from the Leiden-Argentine-Bonn (LAB) HI, survey, including a
high-velocity tail which matches well with observations of high-velocity
clouds. The simulated high-velocity clouds are typically found close to the
galactic disk, with a typical line-of-sight distance of 13kpc from observers on
the solar circle. The fountain efficiently cycles matter from the centre of the
galaxy to its outskirts at a rate of around 0.5 M_sun/yr
| astro-ph | simulations of an isolated milky waylike galaxy in which supernovae power a galactic fountain reproduce the observed velocity and 21cm brightness statistics of galactic neutral hydrogen hi the simulated galaxy consists of a thin hi disk similar in extent and brightness to that observed in the milky way and extraplanar neutral gas at a range of velocities due to the galactic fountain mock observations of the neutral gas resemble the hi flux measurements from the leidenargentinebonn lab hi survey including a highvelocity tail which matches well with observations of highvelocity clouds the simulated highvelocity clouds are typically found close to the galactic disk with a typical lineofsight distance of 13kpc from observers on the solar circle the fountain efficiently cycles matter from the centre of the galaxy to its outskirts at a rate of around 05 m_sunyr | [['simulations', 'of', 'an', 'isolated', 'milky', 'waylike', 'galaxy', 'in', 'which', 'supernovae', 'power', 'a', 'galactic', 'fountain', 'reproduce', 'the', 'observed', 'velocity', 'and', '21cm', 'brightness', 'statistics', 'of', 'galactic', 'neutral', 'hydrogen', 'hi', 'the', 'simulated', 'galaxy', 'consists', 'of', 'a', 'thin', 'hi', 'disk', 'similar', 'in', 'extent', 'and', 'brightness', 'to', 'that', 'observed', 'in', 'the', 'milky', 'way', 'and', 'extraplanar', 'neutral', 'gas', 'at', 'a', 'range', 'of', 'velocities', 'due', 'to', 'the', 'galactic', 'fountain', 'mock', 'observations', 'of', 'the', 'neutral', 'gas', 'resemble', 'the', 'hi', 'flux', 'measurements', 'from', 'the', 'leidenargentinebonn', 'lab', 'hi', 'survey', 'including', 'a', 'highvelocity', 'tail', 'which', 'matches', 'well', 'with', 'observations', 'of', 'highvelocity', 'clouds', 'the', 'simulated', 'highvelocity', 'clouds', 'are', 'typically', 'found', 'close', 'to', 'the', 'galactic', 'disk', 'with', 'a', 'typical', 'lineofsight', 'distance', 'of', '13kpc', 'from', 'observers', 'on', 'the', 'solar', 'circle', 'the', 'fountain', 'efficiently', 'cycles', 'matter', 'from', 'the', 'centre', 'of', 'the', 'galaxy', 'to', 'its', 'outskirts', 'at', 'a', 'rate', 'of', 'around', '05', 'm_sunyr']] | [-0.04303570989821868, 0.03443485954328165, -0.026749943573381344, 0.0722847602438066, -0.06244229878142585, 0.006128277153755627, 0.025771492242432425, 0.4097137156955517, -0.1841086246358761, -0.3142004077914205, -0.01916841436500396, -0.31253720254358586, 0.04222464450671343, 0.22364467165575627, 0.007314479377842594, -0.013534795221393371, 0.01036631412477824, -0.11975272671135999, -0.03036774050301607, -0.2543839605892227, 0.2905109696545686, 0.15106931232922052, 0.1285530557519464, -0.09303011214972412, 0.12027912066542427, -0.21215565195715014, -0.09243824868293031, -0.04112574690528024, -0.15945028387764035, 0.03985743884364293, 0.22865529640502955, 0.12000778828999095, 0.17270463900844546, -0.38601400652206946, -0.2222099187274049, 0.07030169937392547, 0.21499229530144456, 0.0680737182834478, -0.09567435196665436, -0.32903309408779235, 0.02491618712249137, -0.202123890318194, -0.24793545804564318, 0.15402408427538444, 0.025380689443435765, 0.10146626275046354, -0.16478898289764682, 0.18004601624162092, -0.016474304335824058, 0.1390033232695661, -0.09411871732114033, -0.053939435121188636, -0.0741900512999617, 0.02052890972394061, -0.0003388877346241561, 0.09356550754381031, 0.31391581731855217, -0.14881711020338328, 0.05098938396757972, 0.4863073915705411, -0.10992676919125646, 0.08991544397656609, 0.2524868961029353, -0.27707939132721754, -0.17610349951747017, 0.16863639140246695, 0.18702850208012728, 0.02998026015991549, -0.1353062998884133, 0.001921175413571271, -0.1434352824814536, 0.19828804661213917, 0.07795063225742783, 0.015263419226470513, 0.39498255278126604, 0.017746256535233807, 0.08932533219837359, 0.08070901550954195, -0.30718847629818113, -0.06474273395894543, -0.20034369557796822, -0.07949484274280767, -0.11459047322154697, 0.09048088354459644, -0.1456326180488002, -0.09759882221637416, 0.3240045904671352, 0.10558739395635407, 0.30479970555514585, 0.04675851455536147, 0.39235537654183206, 0.014459482067006294, 0.12230229953195165, 0.17125550737217013, 0.29968628590505053, 0.21338873936448002, 0.09963417026551226, -0.25226983245985624, 0.07864178014544423, -0.02934254381557532] |
708.0222 | Ignition and Propagation of Magnetic Avalanches in Mn$_{12}$-Acetate:
the effect of quantum tunneling | Using a wire heater to ignite magnetic avalanches in fixed magnetic field
applied along the easy axis of single crystals of the molecular magnet
Mn$_{12}$-acetate, we report fast local measurements of the temperature and
time-resolved measurements of the local magnetization as a function of magnetic
field. In addition to confirming maxima in the velocity of propagation, we find
that avalanches trigger at a threshold temperature which exhibits pronounced
minima at resonant magnetic fields, demonstrating that thermally assisted
quantum tunneling plays an important role in the ignition as well as the
propagation of magnetic avalanches in molecular magnets.
| cond-mat.mes-hall cond-mat.mtrl-sci | using a wire heater to ignite magnetic avalanches in fixed magnetic field applied along the easy axis of single crystals of the molecular magnet mn_12acetate we report fast local measurements of the temperature and timeresolved measurements of the local magnetization as a function of magnetic field in addition to confirming maxima in the velocity of propagation we find that avalanches trigger at a threshold temperature which exhibits pronounced minima at resonant magnetic fields demonstrating that thermally assisted quantum tunneling plays an important role in the ignition as well as the propagation of magnetic avalanches in molecular magnets | [['using', 'a', 'wire', 'heater', 'to', 'ignite', 'magnetic', 'avalanches', 'in', 'fixed', 'magnetic', 'field', 'applied', 'along', 'the', 'easy', 'axis', 'of', 'single', 'crystals', 'of', 'the', 'molecular', 'magnet', 'mn_12acetate', 'we', 'report', 'fast', 'local', 'measurements', 'of', 'the', 'temperature', 'and', 'timeresolved', 'measurements', 'of', 'the', 'local', 'magnetization', 'as', 'a', 'function', 'of', 'magnetic', 'field', 'in', 'addition', 'to', 'confirming', 'maxima', 'in', 'the', 'velocity', 'of', 'propagation', 'we', 'find', 'that', 'avalanches', 'trigger', 'at', 'a', 'threshold', 'temperature', 'which', 'exhibits', 'pronounced', 'minima', 'at', 'resonant', 'magnetic', 'fields', 'demonstrating', 'that', 'thermally', 'assisted', 'quantum', 'tunneling', 'plays', 'an', 'important', 'role', 'in', 'the', 'ignition', 'as', 'well', 'as', 'the', 'propagation', 'of', 'magnetic', 'avalanches', 'in', 'molecular', 'magnets']] | [-0.1937390822802008, 0.2191387804445016, -0.04662867799670119, 0.008209991316819928, 0.0004367794062625425, -0.10217549649700906, 0.05316105667146441, 0.4041755360349552, -0.24833117882461891, -0.31875486230266464, 0.02008345613157684, -0.24314024433800854, -0.09523248165538631, 0.22694086748626582, 0.07534771557110026, 0.019449364566772254, -0.028264978905352428, 0.03408981058938602, -0.04393468459722461, -0.13262494142676137, 0.2253391411078652, 0.1036620819257073, 0.3176482235532753, 0.07228829035746683, 0.08839753179897353, 0.02092564484277337, 0.10340700882784638, 0.0432090162174757, -0.12486065220950081, -0.0258673039629825, 0.19850954782822622, -0.07924286408119441, 0.20892365207684407, -0.5247785331796586, -0.2019930410189266, 0.0407482327115674, 0.18890150964797772, 0.14620737832630074, -0.10945033911884446, -0.21964600383659305, 0.037577759560927286, -0.0610858220415017, -0.18369490991720988, -0.07387120789397009, -0.009531212089698492, 0.09501079323979997, -0.2804958868541361, 0.12935555095006665, 0.06632372844224968, 0.1748025730329076, -0.07359562601567697, -0.03774756761555819, -0.05883263698394996, 0.04741720890280666, 0.05891843710440336, 0.10593657564256609, 0.28764406772637646, -0.1570668406880547, -0.10817337737985186, 0.30784245790342424, -0.08070702191451852, -0.030520467709308278, 0.1479935214240296, -0.21220250541197866, -0.10592689090552404, 0.18035247457242504, 0.15138337297422677, 0.09943487178342245, -0.11195464182606678, -2.9318712738140958e-06, 0.020103875710868958, 0.13719012514812892, 0.049783795181489024, 0.03826073735721947, 0.28509107165845093, 0.19968376798344026, 0.04033076023375712, 0.1813554077639638, -0.21189292033980647, -0.050833723094967226, -0.28595956939166967, -0.18211623046249537, -0.2014242918182587, 0.05901363133524842, -0.06431827427247495, -0.21418440956430337, 0.4059192818714325, 0.16117582601715916, 0.19841493868758692, -0.07871274869845815, 0.2783456394909737, 0.09627091642541177, 0.09612744475820477, 0.0800826136675692, 0.2719241208465861, 0.23876363387782626, 0.17468091538271954, -0.29940783950625005, 0.07405144142313409, -0.030444746904228766] |
708.0223 | Primordial non-Gaussianity from two curvaton decays | We study a model where two scalar fields, that are subdominant during
inflation, decay into radiation some time after inflation has ended but before
primordial nucleosynthesis. Perturbations of these two curvaton fields can be
responsible for the primordial curvature perturbation. We write down the full
non-linear equations that relate the primordial perturbation to the curvaton
perturbations on large scales, calculate the power spectrum of the primordial
perturbation, and finally go to second order to find the non-linearity
parameter, fNL. We find large positive values of fNL if the energy densities of
the curvatons are sub-dominant when they decay, as in the single curvaton case.
But we also find a large fNL even if the curvatons dominate the total energy
density in the case when the inhomogeneous radiation produced by the first
curvaton decay is diluted by the decay of a second nearly homogeneous curvaton.
The minimum value min(fNL)=-5/4 which we find is the same as in the
single-curvaton case.
| hep-ph astro-ph | we study a model where two scalar fields that are subdominant during inflation decay into radiation some time after inflation has ended but before primordial nucleosynthesis perturbations of these two curvaton fields can be responsible for the primordial curvature perturbation we write down the full nonlinear equations that relate the primordial perturbation to the curvaton perturbations on large scales calculate the power spectrum of the primordial perturbation and finally go to second order to find the nonlinearity parameter fnl we find large positive values of fnl if the energy densities of the curvatons are subdominant when they decay as in the single curvaton case but we also find a large fnl even if the curvatons dominate the total energy density in the case when the inhomogeneous radiation produced by the first curvaton decay is diluted by the decay of a second nearly homogeneous curvaton the minimum value minfnl54 which we find is the same as in the singlecurvaton case | [['we', 'study', 'a', 'model', 'where', 'two', 'scalar', 'fields', 'that', 'are', 'subdominant', 'during', 'inflation', 'decay', 'into', 'radiation', 'some', 'time', 'after', 'inflation', 'has', 'ended', 'but', 'before', 'primordial', 'nucleosynthesis', 'perturbations', 'of', 'these', 'two', 'curvaton', 'fields', 'can', 'be', 'responsible', 'for', 'the', 'primordial', 'curvature', 'perturbation', 'we', 'write', 'down', 'the', 'full', 'nonlinear', 'equations', 'that', 'relate', 'the', 'primordial', 'perturbation', 'to', 'the', 'curvaton', 'perturbations', 'on', 'large', 'scales', 'calculate', 'the', 'power', 'spectrum', 'of', 'the', 'primordial', 'perturbation', 'and', 'finally', 'go', 'to', 'second', 'order', 'to', 'find', 'the', 'nonlinearity', 'parameter', 'fnl', 'we', 'find', 'large', 'positive', 'values', 'of', 'fnl', 'if', 'the', 'energy', 'densities', 'of', 'the', 'curvatons', 'are', 'subdominant', 'when', 'they', 'decay', 'as', 'in', 'the', 'single', 'curvaton', 'case', 'but', 'we', 'also', 'find', 'a', 'large', 'fnl', 'even', 'if', 'the', 'curvatons', 'dominate', 'the', 'total', 'energy', 'density', 'in', 'the', 'case', 'when', 'the', 'inhomogeneous', 'radiation', 'produced', 'by', 'the', 'first', 'curvaton', 'decay', 'is', 'diluted', 'by', 'the', 'decay', 'of', 'a', 'second', 'nearly', 'homogeneous', 'curvaton', 'the', 'minimum', 'value', 'minfnl54', 'which', 'we', 'find', 'is', 'the', 'same', 'as', 'in', 'the', 'singlecurvaton', 'case']] | [-0.1411569218424143, 0.2331776372305337, -0.06301890385699026, 0.14706347049006327, -0.051022935578611435, -0.113314158303936, -0.08312267463678008, 0.2645758007998596, -0.24946124685014698, -0.26396808674214944, 0.08699857653637719, -0.2701493692673316, -0.09473447260820562, 0.1509810608506179, 0.06019579577496999, -0.009652182906491617, 0.026922259826782594, 0.05641348856341118, -0.0012748888538035143, -0.31687306306639296, 0.3597146414255925, 0.08778875144969696, 0.17576766487471995, 0.010449097201133229, 0.0042921026395989735, -0.08873469672005647, 0.021516671430936475, -0.019934966151786457, -0.16429358446174583, 0.007630749561106134, 0.13108540227348253, 0.09862249822409194, 0.2794903474296354, -0.44614103101905744, -0.23865180734877184, 0.21950983472026078, 0.13472667444426162, 0.16806589979544923, -0.037092285990792145, -0.2310560235388838, 0.09403095181117867, -0.16151185690686343, -0.07181711256530753, -0.09371045095383361, 0.02301054434245749, -0.021986960476430454, -0.3185980243758138, 0.14961497956767505, 0.013204985206641233, -0.06856391251911735, -0.0701063860320504, -0.09001850506593324, -0.07283466714908884, 0.04266341451509518, 0.15751633780732585, -0.021358076013642466, 0.17351464211798398, -0.16362993110706853, -0.008809081295795834, 0.39031006235356447, -0.2104276239424855, -0.11162149763790666, 0.030893071753322888, -0.21773573893246947, -0.16076832547617756, 0.11551975771921218, 0.18543697900144726, 0.11386874559851494, -0.09208915273419427, 0.15151723449312707, 0.07122955574419729, 0.19926819532730017, 0.11079590144762948, 0.009533588501630694, 0.26955407714933916, 0.08092511117467241, 0.07450539070614584, 0.12625870050989968, -0.07453416943235715, -0.07513678401625555, -0.36887249628164964, -0.08014348749468803, -0.17993440355654736, 0.10477604842107079, -0.14819177359950234, -0.18394076611822957, 0.4397392594937686, 0.1303588449065188, 0.2183122249486245, 0.06263242250940151, 0.3144097394149774, 0.1533177009929019, 0.06454307548731424, 0.09025520319860594, 0.349328591260847, 0.13566538751730398, 0.10298920624480126, -0.2094362679973488, 0.009978138696354855, -0.03403561929934866] |
708.0224 | Multisource Bayesian sequential change detection | Suppose that local characteristics of several independent compound Poisson
and Wiener processes change suddenly and simultaneously at some unobservable
disorder time. The problem is to detect the disorder time as quickly as
possible after it happens and minimize the rate of false alarms at the same
time. These problems arise, for example, from managing product quality in
manufacturing systems and preventing the spread of infectious diseases. The
promptness and accuracy of detection rules improve greatly if multiple
independent information sources are available. Earlier work on sequential
change detection in continuous time does not provide optimal rules for
situations in which several marked count data and continuously changing signals
are simultaneously observable. In this paper, optimal Bayesian sequential
detection rules are developed for such problems when the marked count data is
in the form of independent compound Poisson processes, and the continuously
changing signals form a multi-dimensional Wiener process. An auxiliary optimal
stopping problem for a jump-diffusion process is solved by transforming it
first into a sequence of optimal stopping problems for a pure diffusion by
means of a jump operator. This method is new and can be very useful in other
applications as well, because it allows the use of the powerful optimal
stopping theory for diffusions.
| math.ST cs.IT math.IT math.PR stat.TH | suppose that local characteristics of several independent compound poisson and wiener processes change suddenly and simultaneously at some unobservable disorder time the problem is to detect the disorder time as quickly as possible after it happens and minimize the rate of false alarms at the same time these problems arise for example from managing product quality in manufacturing systems and preventing the spread of infectious diseases the promptness and accuracy of detection rules improve greatly if multiple independent information sources are available earlier work on sequential change detection in continuous time does not provide optimal rules for situations in which several marked count data and continuously changing signals are simultaneously observable in this paper optimal bayesian sequential detection rules are developed for such problems when the marked count data is in the form of independent compound poisson processes and the continuously changing signals form a multidimensional wiener process an auxiliary optimal stopping problem for a jumpdiffusion process is solved by transforming it first into a sequence of optimal stopping problems for a pure diffusion by means of a jump operator this method is new and can be very useful in other applications as well because it allows the use of the powerful optimal stopping theory for diffusions | [['suppose', 'that', 'local', 'characteristics', 'of', 'several', 'independent', 'compound', 'poisson', 'and', 'wiener', 'processes', 'change', 'suddenly', 'and', 'simultaneously', 'at', 'some', 'unobservable', 'disorder', 'time', 'the', 'problem', 'is', 'to', 'detect', 'the', 'disorder', 'time', 'as', 'quickly', 'as', 'possible', 'after', 'it', 'happens', 'and', 'minimize', 'the', 'rate', 'of', 'false', 'alarms', 'at', 'the', 'same', 'time', 'these', 'problems', 'arise', 'for', 'example', 'from', 'managing', 'product', 'quality', 'in', 'manufacturing', 'systems', 'and', 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708.0225 | Symmetric groups and conjugacy classes | Let S_n be the symmetric group on n-letters. Fix n>5. Given any nontrivial
$\alpha,\beta\in S_n$, we prove that the product $\alpha^{S_n}\beta^{S_n}$ of
the conjugacy classes $\alpha^{S_n}$ and $\beta^{S_n}$ is never a conjugacy
class. Furthermore, if n is not even and $n$ is not a multiple of three, then
$\alpha^{S_n}\beta^{S_n}$ is the union of at least three distinct conjugacy
classes. We also describe the elements $\alpha,\beta\in S_n$ in the case when
$\alpha^{S_n}\beta^{S_n}$ is the union of exactly two distinct conjugacy
classes.
| math.GR | let s_n be the symmetric group on nletters fix n5 given any nontrivial alphabetain s_n we prove that the product alphas_nbetas_n of the conjugacy classes alphas_n and betas_n is never a conjugacy class furthermore if n is not even and n is not a multiple of three then alphas_nbetas_n is the union of at least three distinct conjugacy classes we also describe the elements alphabetain s_n in the case when alphas_nbetas_n is the union of exactly two distinct conjugacy classes | [['let', 's_n', 'be', 'the', 'symmetric', 'group', 'on', 'nletters', 'fix', 'n5', 'given', 'any', 'nontrivial', 'alphabetain', 's_n', 'we', 'prove', 'that', 'the', 'product', 'alphas_nbetas_n', 'of', 'the', 'conjugacy', 'classes', 'alphas_n', 'and', 'betas_n', 'is', 'never', 'a', 'conjugacy', 'class', 'furthermore', 'if', 'n', 'is', 'not', 'even', 'and', 'n', 'is', 'not', 'a', 'multiple', 'of', 'three', 'then', 'alphas_nbetas_n', 'is', 'the', 'union', 'of', 'at', 'least', 'three', 'distinct', 'conjugacy', 'classes', 'we', 'also', 'describe', 'the', 'elements', 'alphabetain', 's_n', 'in', 'the', 'case', 'when', 'alphas_nbetas_n', 'is', 'the', 'union', 'of', 'exactly', 'two', 'distinct', 'conjugacy', 'classes']] | [-0.1912697729981178, 0.16579750772904267, -0.0339107935607143, 0.021048100409702723, -0.039453389183557654, -0.166875954632732, -0.00282180378237715, 0.34225586888852055, -0.30781761269000446, -0.21963225750180035, 0.12074202486138501, -0.3189926404844631, -0.08645020851671889, 0.17620567616994504, -0.07411874088083768, -0.07186880353959156, 0.04860168107628048, 0.15060882081652616, -0.1084515867004921, -0.30212647949236554, 0.38620500077868436, -0.17448777413939115, 0.21294081176014304, -0.0025311408129024817, 0.06733639422175172, -0.05174126367798293, 0.040025541707026685, 0.02681029786041321, -0.1037221667089374, 0.035038726180549956, 0.27923524592603954, 0.14259329186631486, 0.22277526296191402, -0.3148607877022647, -0.0903151183594744, 0.30516859535853585, 0.17133276180255336, 0.007763766937635161, 0.012176215722733601, -0.210736407568775, 0.160030312261653, -0.16602036959261862, -0.08980987747744112, -0.00416634888569643, 0.11479423785364473, -0.020443743131087197, -0.2674009143102721, -0.04685152195395551, 0.10823505388742144, 0.06188218094795555, -0.003842712857748394, -0.12608544752243664, -0.03762921124285498, 0.1505901012497851, 0.025610774655693343, -0.000642621944138369, 0.02546579079920208, -0.030222779309207744, -0.10391650494647683, 0.40476321806381277, 0.00312304776766664, -0.22201257586092144, 0.15691651251505723, -0.2231768797962116, -0.24061730202868, 0.11411328982658588, 0.08589873865682196, 0.17468928124804, -0.06599576989972704, 0.17729345491222506, -0.18742471832370797, 0.13405686496400165, 0.1076006658659498, -0.0597376923391281, 0.12310451417919491, 0.03911829735273374, 0.09182465409515304, 0.1673304063385933, 0.0296915517908267, 0.053764825203008466, -0.3710543545297129, -0.17162109127679429, -0.18752490173021405, 0.10236813903932895, -0.145964099626078, -0.17143458310611448, 0.4459509870351909, 0.029929819311220924, 0.15889286724419646, 0.11776101243283067, 0.1702042960307815, 0.06237963908775286, 0.047318429819175174, 0.14920819767859655, 0.07807967187715815, 0.1426512162116441, -0.16569835704134464, -0.18556267319416458, 0.03005551408927936, 0.19309085660142364] |
708.0226 | GRB070610 : A Curious Galactic Transient | GRB 070610 is a typical high-energy event with a duration of 5s.Yet within
the burst localization we detect a highly unusual X-ray and optical transient,
SwiftJ195509.6+261406. We see high amplitude X-ray and optical variability on
very short time scales even at late times. Using near-infrared imaging assisted
by a laser guide star and adaptive optics, we identified the counterpart of
SwiftJ195509.6+261406. Late-time optical and near-infrared imaging constrain
the spectral type of the counterpart to be fainter than a K-dwarf assuming it
is of Galactic origin. It is possible that GRB 070610 and Swift
J195509.6+261406 are unrelated sources. However, the absence of a typical X-ray
afterglow from GRB 070610 in conjunction with the spatial and temporal
coincidence of the two motivate us to suggest that the sources are related. The
closest (imperfect) analog to Swift J195509.6+261406 is V4641 Sgr, an unusual
black hole binary. We suggest that Swift J195509.6+261406 along with V4641 Sgr
define a sub-class of stellar black hole binaries -- the fast X-ray novae. We
further suggest that fast X-ray novae are associated with bursts of gamma-rays.
If so, GRB 070610 defines a new class of celestial gamma-ray bursts and these
bursts dominate the long-duration GRB demographics
| astro-ph | grb 070610 is a typical highenergy event with a duration of 5syet within the burst localization we detect a highly unusual xray and optical transient swiftj1955096261406 we see high amplitude xray and optical variability on very short time scales even at late times using nearinfrared imaging assisted by a laser guide star and adaptive optics we identified the counterpart of swiftj1955096261406 latetime optical and nearinfrared imaging constrain the spectral type of the counterpart to be fainter than a kdwarf assuming it is of galactic origin it is possible that grb 070610 and swift j1955096261406 are unrelated sources however the absence of a typical xray afterglow from grb 070610 in conjunction with the spatial and temporal coincidence of the two motivate us to suggest that the sources are related the closest imperfect analog to swift j1955096261406 is v4641 sgr an unusual black hole binary we suggest that swift j1955096261406 along with v4641 sgr define a subclass of stellar black hole binaries the fast xray novae we further suggest that fast xray novae are associated with bursts of gammarays if so grb 070610 defines a new class of celestial gammaray bursts and these bursts dominate the longduration grb demographics | [['grb', '070610', 'is', 'a', 'typical', 'highenergy', 'event', 'with', 'a', 'duration', 'of', '5syet', 'within', 'the', 'burst', 'localization', 'we', 'detect', 'a', 'highly', 'unusual', 'xray', 'and', 'optical', 'transient', 'swiftj1955096261406', 'we', 'see', 'high', 'amplitude', 'xray', 'and', 'optical', 'variability', 'on', 'very', 'short', 'time', 'scales', 'even', 'at', 'late', 'times', 'using', 'nearinfrared', 'imaging', 'assisted', 'by', 'a', 'laser', 'guide', 'star', 'and', 'adaptive', 'optics', 'we', 'identified', 'the', 'counterpart', 'of', 'swiftj1955096261406', 'latetime', 'optical', 'and', 'nearinfrared', 'imaging', 'constrain', 'the', 'spectral', 'type', 'of', 'the', 'counterpart', 'to', 'be', 'fainter', 'than', 'a', 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708.0227 | Lateral distribution and the energy determination of showers along the
ankle | The normalization constant of the lateral distribution function (LDF) of an
extensive air shower is a monotonous (almost linear) increasing function of the
energy of the primary. Therefore, the interpolated signal at some fixed
distance from the core can be calibrated to estimate the energy of the shower.
There is, somehow surprisingly, a reconstructed optimal distance, r_{opt}, at
which the effects on the inferred signal, S(r_{opt}), of the uncertainties on
true core location, LDF functional form and shower-to-shower fluctuations are
minimized. We calculate the value of r_{opt} as a function of surface detector
separation, energy and zenith angle and we demonstrate the advantage of using
the r_{opt} value of each individual shower instead of a same fixed distance
for every shower, specially in dealing with events with saturated stations. The
effects on the determined spectrum are also shown.
| astro-ph | the normalization constant of the lateral distribution function ldf of an extensive air shower is a monotonous almost linear increasing function of the energy of the primary therefore the interpolated signal at some fixed distance from the core can be calibrated to estimate the energy of the shower there is somehow surprisingly a reconstructed optimal distance r_opt at which the effects on the inferred signal sr_opt of the uncertainties on true core location ldf functional form and showertoshower fluctuations are minimized we calculate the value of r_opt as a function of surface detector separation energy and zenith angle and we demonstrate the advantage of using the r_opt value of each individual shower instead of a same fixed distance for every shower specially in dealing with events with saturated stations the effects on the determined spectrum are also shown | [['the', 'normalization', 'constant', 'of', 'the', 'lateral', 'distribution', 'function', 'ldf', 'of', 'an', 'extensive', 'air', 'shower', 'is', 'a', 'monotonous', 'almost', 'linear', 'increasing', 'function', 'of', 'the', 'energy', 'of', 'the', 'primary', 'therefore', 'the', 'interpolated', 'signal', 'at', 'some', 'fixed', 'distance', 'from', 'the', 'core', 'can', 'be', 'calibrated', 'to', 'estimate', 'the', 'energy', 'of', 'the', 'shower', 'there', 'is', 'somehow', 'surprisingly', 'a', 'reconstructed', 'optimal', 'distance', 'r_opt', 'at', 'which', 'the', 'effects', 'on', 'the', 'inferred', 'signal', 'sr_opt', 'of', 'the', 'uncertainties', 'on', 'true', 'core', 'location', 'ldf', 'functional', 'form', 'and', 'showertoshower', 'fluctuations', 'are', 'minimized', 'we', 'calculate', 'the', 'value', 'of', 'r_opt', 'as', 'a', 'function', 'of', 'surface', 'detector', 'separation', 'energy', 'and', 'zenith', 'angle', 'and', 'we', 'demonstrate', 'the', 'advantage', 'of', 'using', 'the', 'r_opt', 'value', 'of', 'each', 'individual', 'shower', 'instead', 'of', 'a', 'same', 'fixed', 'distance', 'for', 'every', 'shower', 'specially', 'in', 'dealing', 'with', 'events', 'with', 'saturated', 'stations', 'the', 'effects', 'on', 'the', 'determined', 'spectrum', 'are', 'also', 'shown']] | [-0.11270451859696802, 0.1443805421548972, -0.11989223842515889, 0.0930849768027636, 0.001982174006487875, -0.04841346069949468, 0.009110421085063993, 0.39263105444120666, -0.28049458941975, -0.34859801136827384, 0.07907593303213889, -0.31174732022748813, -0.05658064331106474, 0.1577528479396889, -0.002534291040777725, 0.07212998407355843, 0.08720435726415557, 0.07045867950162667, -0.10941574045025275, -0.14347470589457964, 0.2944489950110225, 0.14060741432612747, 0.2734144663941251, 0.08763561705399277, 0.1443383588326456, 0.0392703200489908, -0.04656569563943458, 0.04681241558694763, -0.11511407121438125, 0.0734790460797992, 0.19573254636012996, 0.12037217632330356, 0.21763995941048556, -0.36890980005022106, -0.1764373445176404, 0.10598903085900908, 0.09887465658550063, 0.03214451008184004, -0.010452132101891304, -0.23977281508056353, 0.09091353424579197, -0.1465053715841695, -0.1452611026891174, 0.07391610806875855, -0.00940427410137588, 0.05954178719082476, -0.2803602634664, 0.061052870039146626, -0.026175950081121637, 0.04899617773310764, -0.03769533199863168, -0.18197335940819695, -0.059877942790392866, 0.16533634014577217, 0.08059122522504333, 0.07468560627274161, 0.16493946995652436, -0.11661980596173854, -0.027570594819330604, 0.3486424181882265, -0.064816717445055, -0.17800725567265904, 0.10323080128521053, -0.17701515030578105, -0.05824268586937012, 0.1697449387054564, 0.18582875000476076, 0.08233693877003924, -0.13991674557192266, 0.042035598007462455, 0.0031417439025520845, 0.20396687173332176, 0.08654778811784909, 0.009959471582802162, 0.2046498180822517, 0.14106991153930987, 0.11891715492319016, 0.11690549826993858, -0.1595704247648182, -0.0284366904465604, -0.3280953503873226, -0.10054050668067958, -0.24957381163716968, 0.029002198381825304, -0.13324295575732628, -0.18445713559813953, 0.39922842423832655, 0.11348955782239128, 0.218461380863603, 0.08544136486339118, 0.3071618313445662, 0.14119651324853275, 0.06956055964832704, 0.0736932937925967, 0.2690185533853904, 0.10960333227574227, 0.05520081227427743, -0.23436226469913266, 0.11678184472010845, 0.015697546406941366] |
708.0228 | Optical Follow-up of New SMC Wing Be/X-ray Binaries | We investigate the optical counterparts of recently discovered Be/X-ray
binaries in the Small Magellanic Cloud. In total four sources, SXP101, SXP700,
SXP348 and SXP65.8 were detected during the Chandra Survey of the Wing of the
SMC. SXP700 and SXP65.8 were previously unknown. Many optical ground based
telescopes have been utilised in the optical follow-up, providing coverage in
both the red and blue bands. This has led to the classification of all of the
counterparts as Be stars and confirms that three lie within the Galactic
spectral distribution of known Be/X-ray binaries. SXP101 lies outside this
distribution becoming the latest spectral type known. Monitoring of the Halpha
emission line suggests that all the sources bar SXP700 have highly variable
circumstellar disks, possibly a result of their comparatively short orbital
periods. Phase resolved X-ray spectroscopy has also been performed on SXP65.8,
revealing that the emission is indeed harder during the passage of the X-ray
beam through the line of sight.
| astro-ph | we investigate the optical counterparts of recently discovered bexray binaries in the small magellanic cloud in total four sources sxp101 sxp700 sxp348 and sxp658 were detected during the chandra survey of the wing of the smc sxp700 and sxp658 were previously unknown many optical ground based telescopes have been utilised in the optical followup providing coverage in both the red and blue bands this has led to the classification of all of the counterparts as be stars and confirms that three lie within the galactic spectral distribution of known bexray binaries sxp101 lies outside this distribution becoming the latest spectral type known monitoring of the halpha emission line suggests that all the sources bar sxp700 have highly variable circumstellar disks possibly a result of their comparatively short orbital periods phase resolved xray spectroscopy has also been performed on sxp658 revealing that the emission is indeed harder during the passage of the xray beam through the line of sight | [['we', 'investigate', 'the', 'optical', 'counterparts', 'of', 'recently', 'discovered', 'bexray', 'binaries', 'in', 'the', 'small', 'magellanic', 'cloud', 'in', 'total', 'four', 'sources', 'sxp101', 'sxp700', 'sxp348', 'and', 'sxp658', 'were', 'detected', 'during', 'the', 'chandra', 'survey', 'of', 'the', 'wing', 'of', 'the', 'smc', 'sxp700', 'and', 'sxp658', 'were', 'previously', 'unknown', 'many', 'optical', 'ground', 'based', 'telescopes', 'have', 'been', 'utilised', 'in', 'the', 'optical', 'followup', 'providing', 'coverage', 'in', 'both', 'the', 'red', 'and', 'blue', 'bands', 'this', 'has', 'led', 'to', 'the', 'classification', 'of', 'all', 'of', 'the', 'counterparts', 'as', 'be', 'stars', 'and', 'confirms', 'that', 'three', 'lie', 'within', 'the', 'galactic', 'spectral', 'distribution', 'of', 'known', 'bexray', 'binaries', 'sxp101', 'lies', 'outside', 'this', 'distribution', 'becoming', 'the', 'latest', 'spectral', 'type', 'known', 'monitoring', 'of', 'the', 'halpha', 'emission', 'line', 'suggests', 'that', 'all', 'the', 'sources', 'bar', 'sxp700', 'have', 'highly', 'variable', 'circumstellar', 'disks', 'possibly', 'a', 'result', 'of', 'their', 'comparatively', 'short', 'orbital', 'periods', 'phase', 'resolved', 'xray', 'spectroscopy', 'has', 'also', 'been', 'performed', 'on', 'sxp658', 'revealing', 'that', 'the', 'emission', 'is', 'indeed', 'harder', 'during', 'the', 'passage', 'of', 'the', 'xray', 'beam', 'through', 'the', 'line', 'of', 'sight']] | [-0.1127644793521012, 0.07159442499565381, -0.07733372271421456, 0.06502966777676897, -0.1034409155768733, -0.06717851100970179, 0.07709066332468102, 0.48148786180442377, -0.16055450986530032, -0.3234446724726548, 0.11189638810652879, -0.30058898090689085, -0.055808667105532464, 0.2198682612217512, -0.03127176877704539, 0.018727954008406208, 0.08050322742051175, -0.09274627815391268, -0.011672828732539088, -0.25367165097155636, 0.28237561239079845, 0.05398683131338217, 0.15391153266593333, -0.03152184208494521, 0.03634867180258997, -0.04173664734097979, -0.10149483711969468, -0.034861548371132346, -0.06691789272191537, 0.06840762858459305, 0.23656357793558028, 0.11360198162616261, 0.2014145477795072, -0.3367171632862019, -0.24012071135859456, 0.0846365001097682, 0.21228649079792142, 0.010856115391417858, -0.03159166338117493, -0.294733679957778, 0.04650233226918405, -0.1763935080278785, -0.1862405614927411, 0.049303238868202655, 0.08018981341212507, 0.0793359270199172, -0.12071834229164749, 0.05902479174453014, 0.00458175656986573, 0.1099335515370307, -0.13767270398957113, -0.1157979842816149, -0.042579941097046096, 0.09368646195939472, 0.030905684556872134, 0.041456377629431024, 0.09712791708448242, -0.12044188697191496, -0.07593601072327263, 0.3790103060929405, -0.03794920415947995, 0.041184985968134094, 0.20605887244455517, -0.21127324381002013, -0.20709269698108396, 0.20120829106533838, 0.11830899987910544, 0.16417879420032183, -0.1707607212866987, 0.024432280527487877, -0.024724592634987448, 0.200144394813481, 0.06727970731444657, 0.11582003861305214, 0.28634948878222327, 0.09930599734427467, -0.005875325037331711, 0.1707454187727924, -0.31222059188801193, -0.05295721090008174, -0.18496948454468962, -0.09670664012552269, -0.14987239024241364, 0.0709667534897885, -0.053827806778868, -0.13883475008075155, 0.3622653940211861, 0.079227975880607, 0.20133483580974562, 0.0033330326381650183, 0.2978878415159641, 0.09158326889944053, 0.11478779476977163, 0.0949253393419748, 0.36731562185131256, 0.16059007214742801, 0.12953545643136866, -0.21228927683025117, 0.10628756408489519, -0.03194850375425191] |
708.0229 | Too small to form a galaxy: How the UV background determines the baryon
fraction | The cosmic ultraviolet background (UVB) heats the intergalactic medium (IGM),
as a result the gas in dark matter halos below a certain mass is too hot to
cool within a Hubble time. The UVB effectively suppresses the formation of
dwarf galaxies. Using high resolution cosmological hydrodynamical simulations
we show that photo heating leads to small baryon fractions in halos below ~
6x10^9 h^{-1}M_sun, independent of the cosmic environment. The simulations are
carried out assuming a homogeneous UVB with flux densities as given by Haardt &
Madau (1996). A halo may stop to condense gas significantly after the universe
is reionised, namely when its mass falls below the characteristic mass scale
set by the photo heating. Assuming a spherical halo model we derive this
characteristic mass analytically and identify the main mechanisms that prevent
the gas from cooling in small halos. The theoretically derived characteristic
mass is smaller than the one obtained from observations. Increasing the energy
per ionising photon by a factor between four and eight would be sufficient to
reconcile both. This is equivalent to an average temperature of the IGM of ~
10^4 K. In this sense the faint end of the luminosity function may serve as a
calorimeter for the IGM.
| astro-ph | the cosmic ultraviolet background uvb heats the intergalactic medium igm as a result the gas in dark matter halos below a certain mass is too hot to cool within a hubble time the uvb effectively suppresses the formation of dwarf galaxies using high resolution cosmological hydrodynamical simulations we show that photo heating leads to small baryon fractions in halos below 6x109 h1m_sun independent of the cosmic environment the simulations are carried out assuming a homogeneous uvb with flux densities as given by haardt madau 1996 a halo may stop to condense gas significantly after the universe is reionised namely when its mass falls below the characteristic mass scale set by the photo heating assuming a spherical halo model we derive this characteristic mass analytically and identify the main mechanisms that prevent the gas from cooling in small halos the theoretically derived characteristic mass is smaller than the one obtained from observations increasing the energy per ionising photon by a factor between four and eight would be sufficient to reconcile both this is equivalent to an average temperature of the igm of 104 k in this sense the faint end of the luminosity function may serve as a calorimeter for the igm | [['the', 'cosmic', 'ultraviolet', 'background', 'uvb', 'heats', 'the', 'intergalactic', 'medium', 'igm', 'as', 'a', 'result', 'the', 'gas', 'in', 'dark', 'matter', 'halos', 'below', 'a', 'certain', 'mass', 'is', 'too', 'hot', 'to', 'cool', 'within', 'a', 'hubble', 'time', 'the', 'uvb', 'effectively', 'suppresses', 'the', 'formation', 'of', 'dwarf', 'galaxies', 'using', 'high', 'resolution', 'cosmological', 'hydrodynamical', 'simulations', 'we', 'show', 'that', 'photo', 'heating', 'leads', 'to', 'small', 'baryon', 'fractions', 'in', 'halos', 'below', '6x109', 'h1m_sun', 'independent', 'of', 'the', 'cosmic', 'environment', 'the', 'simulations', 'are', 'carried', 'out', 'assuming', 'a', 'homogeneous', 'uvb', 'with', 'flux', 'densities', 'as', 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708.023 | Imaging spontaneous currents in superconducting arrays of pi-junctions | Superconductors separated by a thin tunneling barrier exhibit the Josephson
effect that allows charge transport at zero voltage, typically with no phase
shift between the superconductors in the lowest energy state. Recently,
Josephson junctions with ground state phase shifts of pi proposed by theory
three decades ago have been demonstrated. In superconducting loops,
pi-junctions cause spontaneous circulation of persistent currents in zero
magnetic field, analogous to spin-1/2 systems. Here we image the spontaneous
zero-field currents in superconducting networks of temperature-controlled
pi-junctions with weakly ferromagnetic barriers using a scanning SQUID
microscope. We find an onset of spontaneous supercurrents at the 0-pi
transition temperature of the junctions Tpi = 3 K. We image the currents in
non-uniformly frustrated arrays consisting of cells with even and odd numbers
of pi-junctions. Such arrays are attractive model systems for studying the
exotic phases of the 2D XY-model and achieving scalable adiabatic quantum
computers.
| cond-mat.supr-con cond-mat.mes-hall | superconductors separated by a thin tunneling barrier exhibit the josephson effect that allows charge transport at zero voltage typically with no phase shift between the superconductors in the lowest energy state recently josephson junctions with ground state phase shifts of pi proposed by theory three decades ago have been demonstrated in superconducting loops pijunctions cause spontaneous circulation of persistent currents in zero magnetic field analogous to spin12 systems here we image the spontaneous zerofield currents in superconducting networks of temperaturecontrolled pijunctions with weakly ferromagnetic barriers using a scanning squid microscope we find an onset of spontaneous supercurrents at the 0pi transition temperature of the junctions tpi 3 k we image the currents in nonuniformly frustrated arrays consisting of cells with even and odd numbers of pijunctions such arrays are attractive model systems for studying the exotic phases of the 2d xymodel and achieving scalable adiabatic quantum computers | [['superconductors', 'separated', 'by', 'a', 'thin', 'tunneling', 'barrier', 'exhibit', 'the', 'josephson', 'effect', 'that', 'allows', 'charge', 'transport', 'at', 'zero', 'voltage', 'typically', 'with', 'no', 'phase', 'shift', 'between', 'the', 'superconductors', 'in', 'the', 'lowest', 'energy', 'state', 'recently', 'josephson', 'junctions', 'with', 'ground', 'state', 'phase', 'shifts', 'of', 'pi', 'proposed', 'by', 'theory', 'three', 'decades', 'ago', 'have', 'been', 'demonstrated', 'in', 'superconducting', 'loops', 'pijunctions', 'cause', 'spontaneous', 'circulation', 'of', 'persistent', 'currents', 'in', 'zero', 'magnetic', 'field', 'analogous', 'to', 'spin12', 'systems', 'here', 'we', 'image', 'the', 'spontaneous', 'zerofield', 'currents', 'in', 'superconducting', 'networks', 'of', 'temperaturecontrolled', 'pijunctions', 'with', 'weakly', 'ferromagnetic', 'barriers', 'using', 'a', 'scanning', 'squid', 'microscope', 'we', 'find', 'an', 'onset', 'of', 'spontaneous', 'supercurrents', 'at', 'the', '0pi', 'transition', 'temperature', 'of', 'the', 'junctions', 'tpi', '3', 'k', 'we', 'image', 'the', 'currents', 'in', 'nonuniformly', 'frustrated', 'arrays', 'consisting', 'of', 'cells', 'with', 'even', 'and', 'odd', 'numbers', 'of', 'pijunctions', 'such', 'arrays', 'are', 'attractive', 'model', 'systems', 'for', 'studying', 'the', 'exotic', 'phases', 'of', 'the', '2d', 'xymodel', 'and', 'achieving', 'scalable', 'adiabatic', 'quantum', 'computers']] | [-0.27246486074069426, 0.2539638805870944, 0.005266933844481804, 0.017196172895068366, 0.015945830502781737, -0.21431675275192172, 0.0745779399619102, 0.39961147337493036, -0.21105172872213887, -0.27494736070757364, 0.0008151834263612016, -0.3096776097066753, -0.11325119061634692, 0.20953639773303503, 0.055998599666747306, 0.057442486652832, -0.0428501875393194, -0.03134504913472805, -0.09311003811961534, -0.15993409309865667, 0.28603761315624526, -0.04240304361442801, 0.35910250977961483, 0.041630402663532566, 0.06268089641278395, -0.062384904610930755, 0.1717612897869529, 0.022326232718151748, -0.12742536292368029, 0.02395581335564252, 0.2557894276679956, -0.11887381256393277, 0.15123180372539122, -0.5283885067332771, -0.2119982051378002, 0.10600332386607976, 0.1539283615080038, 0.17227220700318818, -0.05152427298305905, -0.3204135103697641, 0.05021640449306186, -0.14421969344269256, -0.1007323716703777, -0.09901302576470537, 0.009910626329804714, -0.0004624877676215707, -0.21217875847423476, 0.10012629306019873, 0.06715327147536967, 0.1352848502043888, -0.006774652401241949, -0.08846267350144735, -0.02618568502113122, 0.04851969080477427, -0.0016998740587839667, 0.027549760606215924, 0.14827216108334346, -0.14498549928218696, -0.1899719481248738, 0.25125292716484493, -0.0481681516563544, -0.09107043413559393, 0.13734412857182451, -0.18134328321449628, -0.05062800539708158, 0.181803284922526, 0.06042391026937435, 0.08664299629400579, -0.1518423413369982, 0.06926210923357962, 0.020368592701155413, 0.1618583506910878, 0.08961042295191057, 0.06738291599955663, 0.310969555699805, 0.22745306465496012, 0.05336438374733236, 0.17048314890387106, -0.14792531022649943, -0.08981577277208874, -0.22571424838966456, -0.16642857289106464, -0.1917879797334523, 0.08463033878238124, 0.00040912228421827613, -0.20930821751402753, 0.3805778274870142, 0.15379521973212534, 0.16136617278110008, -0.06667736746991675, 0.2937079606305326, 0.10624678195675924, 0.10281566341667353, 0.01847819865762009, 0.19888925653894995, 0.21672499604478834, 0.15381144418796527, -0.2986324681951126, 0.006992923647013246, 0.015879461959916717] |
708.0231 | Forward inclusive dijet production and azimuthal correlations in pA
collisions | We derive forward inclusive dijet production in the scattering of a dilute
hadron off an arbitrary dense target, whose partons with small fraction of
momentum x are described by a Color Glass Condensate. Both multiple scattering
and non-linear QCD evolution at small-x are included. This is of relevance for
measurements of two-particle correlations in the proton direction of
proton-nucleus collisions at RHIC and LHC energies. The azimuthal angle
distribution is peaked back to back and broadens as the momenta of the measured
particles gets closer to the saturation scale.
| hep-ph nucl-th | we derive forward inclusive dijet production in the scattering of a dilute hadron off an arbitrary dense target whose partons with small fraction of momentum x are described by a color glass condensate both multiple scattering and nonlinear qcd evolution at smallx are included this is of relevance for measurements of twoparticle correlations in the proton direction of protonnucleus collisions at rhic and lhc energies the azimuthal angle distribution is peaked back to back and broadens as the momenta of the measured particles gets closer to the saturation scale | [['we', 'derive', 'forward', 'inclusive', 'dijet', 'production', 'in', 'the', 'scattering', 'of', 'a', 'dilute', 'hadron', 'off', 'an', 'arbitrary', 'dense', 'target', 'whose', 'partons', 'with', 'small', 'fraction', 'of', 'momentum', 'x', 'are', 'described', 'by', 'a', 'color', 'glass', 'condensate', 'both', 'multiple', 'scattering', 'and', 'nonlinear', 'qcd', 'evolution', 'at', 'smallx', 'are', 'included', 'this', 'is', 'of', 'relevance', 'for', 'measurements', 'of', 'twoparticle', 'correlations', 'in', 'the', 'proton', 'direction', 'of', 'protonnucleus', 'collisions', 'at', 'rhic', 'and', 'lhc', 'energies', 'the', 'azimuthal', 'angle', 'distribution', 'is', 'peaked', 'back', 'to', 'back', 'and', 'broadens', 'as', 'the', 'momenta', 'of', 'the', 'measured', 'particles', 'gets', 'closer', 'to', 'the', 'saturation', 'scale']] | [-0.06408127270419192, 0.3048330818506002, -0.17345880164000926, 0.12908008106424357, -0.005641586796035257, -0.07880359080690744, -0.05497729749905385, 0.3689627941028121, -0.2272264595180122, -0.20993559001657192, -0.06400004962427813, -0.3649624955704373, 0.09771352372749635, 0.10648183349070003, 0.08478258225250612, 0.09844572178684594, 0.06802831988865404, -0.00675496364305361, -0.05831794421125747, -0.19534373350357742, 0.318936008167338, 0.09018805184600394, 0.2266160264778673, 0.18045804497859116, 0.11932101871902018, 0.13949896935164258, -0.021120053095340183, -0.009898072391162428, -0.07174708803702314, 0.04468037902535818, 0.2866273726849409, -0.00018989256049474972, 0.14351075138697883, -0.4023256252069822, -0.1065659951340156, 0.07241159239051383, 0.18560417748077282, 0.1238058252087428, -0.04616762941253236, -0.2468078722654099, 0.032245908681330405, -0.1950828403449, -0.21315016279917923, -0.03971642693190762, 0.025162737363991276, 0.028385713393015138, -0.2873447993639438, 0.10478964454776953, -0.008589457908875487, 0.019359698966459445, -0.004661714106149385, -0.17519755192687003, -0.1073076090032465, 0.024820997139041342, 0.07942545101611634, 0.12135427669109253, 0.20617064869742882, -0.23438071303482932, -0.09711449779046888, 0.37880031233967354, 0.0014908041849502184, -0.1413336599643311, 0.13897217376932, -0.27569811216168355, -0.07960792779242305, 0.2104775380065895, 0.26366137412868523, 0.10435063058717747, -0.17756754043773654, 0.06082100046380342, -0.03998893097022109, 0.15024751836821185, 0.13201071469510875, 0.0800948938187421, 0.2307242979871088, 0.2056701616841902, -0.01740161282941699, 0.11720499332884347, -0.16674714657907072, -0.10643186259052057, -0.38682528308480246, -0.059082465659659564, -0.13891393822105078, 0.052231384432100264, -0.08586014966232561, -0.07167398518872227, 0.3288635386551699, 0.0812566731323938, 0.33745310583225124, 0.018425183394254092, 0.3226486999918236, 0.13491732498050113, 0.04481993433548493, 0.07758170677076899, 0.2870852184073811, 0.1682648371115034, 0.21008487521759706, -0.27050898598214046, 0.05458538593682513, 0.03706959889301758] |
708.0232 | Nucleon Spin Structure with hadronic collisions at COMPASS | In order to illustrate the capabilities of COMPASS using a hadronic beam, I
review some of the azimuthal asymmetries in hadronic collisions, that allow for
the extraction of transversity, Sivers and Boer-Mulders functions, necessary to
explore the partonic spin structure of the nucleon. I also report on some Monte
Carlo simulations of such asymmetries for the production of Drell-Yan lepton
pairs from the collision of high-energy pions on a transversely polarized
proton target.
| hep-ph | in order to illustrate the capabilities of compass using a hadronic beam i review some of the azimuthal asymmetries in hadronic collisions that allow for the extraction of transversity sivers and boermulders functions necessary to explore the partonic spin structure of the nucleon i also report on some monte carlo simulations of such asymmetries for the production of drellyan lepton pairs from the collision of highenergy pions on a transversely polarized proton target | [['in', 'order', 'to', 'illustrate', 'the', 'capabilities', 'of', 'compass', 'using', 'a', 'hadronic', 'beam', 'i', 'review', 'some', 'of', 'the', 'azimuthal', 'asymmetries', 'in', 'hadronic', 'collisions', 'that', 'allow', 'for', 'the', 'extraction', 'of', 'transversity', 'sivers', 'and', 'boermulders', 'functions', 'necessary', 'to', 'explore', 'the', 'partonic', 'spin', 'structure', 'of', 'the', 'nucleon', 'i', 'also', 'report', 'on', 'some', 'monte', 'carlo', 'simulations', 'of', 'such', 'asymmetries', 'for', 'the', 'production', 'of', 'drellyan', 'lepton', 'pairs', 'from', 'the', 'collision', 'of', 'highenergy', 'pions', 'on', 'a', 'transversely', 'polarized', 'proton', 'target']] | [-0.04616708015187401, 0.24510841048641563, -0.15004658944624133, 0.16221037452198464, -0.042183366387266004, -0.02495472564613957, -0.025340974206513125, 0.39603152544531106, -0.1989270681770493, -0.16412519696742706, -0.08535743498702673, -0.3256473500434666, 0.05708859621049606, 0.12728123255839494, 0.14335717776892323, 0.11359909197239026, 0.10940682650735117, -0.05380227854666746, -0.07137967050649634, -0.17102917477373697, 0.39922833565163285, 0.07913265099162109, 0.1908343933181429, 0.20539158044306383, 0.09871625490741778, 0.12041814984396508, -0.1063606618953014, -0.11106052137401005, -0.14034241588344903, 0.07536750380946515, 0.2505866243561398, 0.10161326531072032, 0.05130777461135326, -0.4193312995748161, -0.08071539872517325, 0.10289678703483245, 0.14247511042766783, 0.1307569867548571, -0.07647792546218898, -0.26871027157016814, 0.020659696323516434, -0.26358678618012227, -0.1422175306265485, -0.13042462219114173, -0.026351139274719236, 0.07847065560213506, -0.34075631155099795, 0.025782052819435294, -0.023371893427755735, 0.06879846671634443, 0.02909156202006932, -0.2678063017992328, -0.06935422442062464, 0.026417048037218005, 0.1175928415000209, 0.11216500674514737, 0.14160269382728696, -0.2166057720872867, -0.23742979981821694, 0.37756986835690803, 0.04725027550809238, -0.205668872005421, 0.1140784703526799, -0.293844182344077, -0.18720024715381842, 0.13459216278964933, 0.28768249538612284, 0.09087542260754598, -0.21774966313187927, 0.02486403833688811, -0.04615474966903255, 0.14170943941499986, 0.09610249218212007, 0.06327254463733518, 0.2112794520129284, 0.21892912105389245, -0.03368392337292229, 0.08563354631809339, -0.18339828007586606, -0.06843062500750059, -0.4236414429974066, -0.13759119778692927, -0.1270256473823157, 0.10445888275408173, -0.04978580524078857, -0.07223025734268435, 0.41436667730138727, 0.1364351622505139, 0.22747476730648786, -0.051112500312004545, 0.34472956199658245, 0.008874993847861681, 0.025145072796165128, 0.04569609271847222, 0.23494024178386372, 0.204972083004166, 0.19073248500234052, -0.3016103515369588, 0.0982791565754132, 0.032602555986034544] |
708.0233 | EBIT Charge-Exchange Measurements and Astrophysical Applications | The past decade has seen a surge of interest in astrophysical charge exchange
(CX). The impetus was the discovery of X-ray emission from comets in 1996, soon
followed by the observation of CX emission in planetary atmospheres and
throughout the heliosphere. Geocoronal and heliospheric CX are now recognized
to contribute a considerable fraction of the soft X-ray background, and
stellar-wind charge exchange is expected to occur in the astrospheres
surrounding many stars. CX may also contribute to X-ray line emission in
supernova remnants, the Galactic Center, and the Galactic Ridge. This article
summarizes the key aspects of CX X-ray emission and its astrophysical
relevance, and reviews related laboratory measurements and theoretical
predictions with particular attention to spectroscopy experiments conducted on
electron beam ion traps.
| astro-ph | the past decade has seen a surge of interest in astrophysical charge exchange cx the impetus was the discovery of xray emission from comets in 1996 soon followed by the observation of cx emission in planetary atmospheres and throughout the heliosphere geocoronal and heliospheric cx are now recognized to contribute a considerable fraction of the soft xray background and stellarwind charge exchange is expected to occur in the astrospheres surrounding many stars cx may also contribute to xray line emission in supernova remnants the galactic center and the galactic ridge this article summarizes the key aspects of cx xray emission and its astrophysical relevance and reviews related laboratory measurements and theoretical predictions with particular attention to spectroscopy experiments conducted on electron beam ion traps | [['the', 'past', 'decade', 'has', 'seen', 'a', 'surge', 'of', 'interest', 'in', 'astrophysical', 'charge', 'exchange', 'cx', 'the', 'impetus', 'was', 'the', 'discovery', 'of', 'xray', 'emission', 'from', 'comets', 'in', '1996', 'soon', 'followed', 'by', 'the', 'observation', 'of', 'cx', 'emission', 'in', 'planetary', 'atmospheres', 'and', 'throughout', 'the', 'heliosphere', 'geocoronal', 'and', 'heliospheric', 'cx', 'are', 'now', 'recognized', 'to', 'contribute', 'a', 'considerable', 'fraction', 'of', 'the', 'soft', 'xray', 'background', 'and', 'stellarwind', 'charge', 'exchange', 'is', 'expected', 'to', 'occur', 'in', 'the', 'astrospheres', 'surrounding', 'many', 'stars', 'cx', 'may', 'also', 'contribute', 'to', 'xray', 'line', 'emission', 'in', 'supernova', 'remnants', 'the', 'galactic', 'center', 'and', 'the', 'galactic', 'ridge', 'this', 'article', 'summarizes', 'the', 'key', 'aspects', 'of', 'cx', 'xray', 'emission', 'and', 'its', 'astrophysical', 'relevance', 'and', 'reviews', 'related', 'laboratory', 'measurements', 'and', 'theoretical', 'predictions', 'with', 'particular', 'attention', 'to', 'spectroscopy', 'experiments', 'conducted', 'on', 'electron', 'beam', 'ion', 'traps']] | [-0.043599398660233185, 0.1490043482532905, -0.013611315037950033, 0.09132917665485893, -0.08641103289330439, -0.04428904232073335, 0.03743936997958489, 0.4306054756405853, -0.25144294970819064, -0.2871324636432673, 0.053348280740113205, -0.356833245815529, -0.041684342386771836, 0.2343070110861933, -0.03677017542143022, 0.010549740564930554, 0.07564474278009467, -0.053622782846251806, -0.005551545159710992, -0.22643588117564156, 0.24711831408128473, 0.15648270425041236, 0.1721387074813397, 0.09339663349753884, 0.040588855927419516, -0.04225614624127986, -0.11128426152619443, -0.04861432813753885, -0.11583535666877945, 0.08292067973243614, 0.2846286665783649, 0.14416559314967373, 0.1874907904214436, -0.4431932896766211, -0.27394791774901434, 0.05471862139811198, 0.18066464971765997, -0.0024713901209085427, -0.12172461381921876, -0.2627587567699412, -0.02262329421524379, -0.21012293948461452, -0.15109546799137588, 0.05267537625003306, 0.0706962804843281, 0.04682514077848605, -0.20127284601180545, 0.039684323714848896, 0.039603464466880164, 0.08033414150498086, -0.137050536390762, -0.09432511735482671, -0.03560861693544974, 0.06502015945772009, 0.12282946324088581, 0.09754713635230737, 0.21580704335393686, -0.1164452500900464, -0.09663631899410018, 0.3999401935819356, -0.03463561189991812, 0.029965496421115654, 0.21854339656232286, -0.27370546836473586, -0.19155771081380907, 0.2017116230431824, 0.16383025952945313, 0.08097545171697293, -0.13266075390856713, 0.07998680994933238, -0.03433940938163188, 0.14156755164699023, 0.04630746335099121, 0.07888291979232294, 0.31978209147364983, 0.12583902132164146, -0.022484051251892873, 0.1043076482508754, -0.21896824070755694, -0.05420469910642432, -0.22480875951230467, -0.10538922377435805, -0.11385136330875778, 0.08542456646870461, -0.010046343945437148, -0.10377867056822945, 0.35731817298238316, 0.13213151206371315, 0.15844981868060365, -0.13196763068798087, 0.3042513627043527, 0.04126655351888809, 0.03446335420237794, 0.07542571813363823, 0.34114577863346635, 0.20264933227689094, 0.1846289300808548, -0.20040798306112148, 0.1436641254882899, 0.00839489087041828] |
708.0234 | Heat Kernel Asymptotics on Homogeneous Bundles | We consider Laplacians acting on sections of homogeneous vector bundles over
symmetric spaces. By using an integral representation of the heat semi-group we
find a formal solution for the heat kernel diagonal that gives a generating
function for the whole sequence of heat invariants. We argue that the obtained
formal solution correctly reproduces the exact heat kernel diagonal after a
suitable regularization and analytical continuation.
| math.DG hep-th math-ph math.AP math.MP | we consider laplacians acting on sections of homogeneous vector bundles over symmetric spaces by using an integral representation of the heat semigroup we find a formal solution for the heat kernel diagonal that gives a generating function for the whole sequence of heat invariants we argue that the obtained formal solution correctly reproduces the exact heat kernel diagonal after a suitable regularization and analytical continuation | [['we', 'consider', 'laplacians', 'acting', 'on', 'sections', 'of', 'homogeneous', 'vector', 'bundles', 'over', 'symmetric', 'spaces', 'by', 'using', 'an', 'integral', 'representation', 'of', 'the', 'heat', 'semigroup', 'we', 'find', 'a', 'formal', 'solution', 'for', 'the', 'heat', 'kernel', 'diagonal', 'that', 'gives', 'a', 'generating', 'function', 'for', 'the', 'whole', 'sequence', 'of', 'heat', 'invariants', 'we', 'argue', 'that', 'the', 'obtained', 'formal', 'solution', 'correctly', 'reproduces', 'the', 'exact', 'heat', 'kernel', 'diagonal', 'after', 'a', 'suitable', 'regularization', 'and', 'analytical', 'continuation']] | [-0.1503634514251294, 0.01255992158571294, -0.07316030220558437, 0.09973759413338625, -0.11833368152953111, -0.07868284029313005, 0.03528144411348666, 0.3759094669841803, -0.28573578673486527, -0.1447970034697881, 0.11165519474933927, -0.2904276233166456, -0.1532337714273196, 0.2428226249722334, -0.0023521206556604457, 0.0676357072366115, 0.07871347935153888, 0.1000693349705006, -0.14305596687616065, -0.17950931398126369, 0.4191839236479539, 7.649722437445934e-05, 0.24197313026166878, 0.03545316893320817, 0.17073365948521174, 0.04074056687263342, -0.0499065968566216, -0.036177031237345475, -0.15099053533429888, 0.10818450402898284, 0.25148915176709685, 0.05791190303145693, 0.22642223614339646, -0.42139813547524124, -0.23176492133106177, 0.13274694326548622, 0.1040331125832521, 0.024423478414806035, -0.03854441650820753, -0.24075722639950423, 0.05543827994440038, -0.16080696569003453, -0.14655270393794545, -0.17522633723341502, 0.02834744453430176, 0.038755969588573164, -0.3044157875719695, 0.07372752759928027, 0.09867768932420473, 0.02806810106222446, -0.15268058771124252, -0.10509376058784815, -0.012921232662092035, 0.09902730166482238, -0.00628825502935797, 0.02144115280288343, 0.10978773238423925, -0.09988427935168147, -0.06770403651663891, 0.2816673753496546, -0.1498557678065621, -0.2897440854531641, 0.06582074977744085, -0.11289240108229794, -0.09293630104511977, 0.11779074216118225, 0.06617477891536859, 0.16643697426009638, -0.13882313704547974, 0.15226863846093272, -0.08370046580496888, 0.0845331583942215, 0.04452453396068169, -0.053778630767304166, 0.13513123193899026, 0.10135596632384337, 0.07459033121569798, 0.19599434398114682, 0.001282617302898031, -0.1199110930525841, -0.3775912366234339, -0.22656184174657729, -0.1838387422836744, 0.14578832458131588, -0.1633275551719215, -0.23674030386341305, 0.4155535897383323, 0.09134749341756106, 0.2349163280083583, 0.1197955956396002, 0.24590849251701283, 0.19590892764524773, 0.050675894477619575, 0.11983700960946198, 0.12052647070242808, 0.1796420131595089, 0.10237632220288595, -0.21751820753113582, -0.002237798126700979, 0.23101746570318937] |
708.0235 | Indirect signals from braneworlds | It has been suggested that our universe could be a 3-dimensional brane where
the SM fields live embedded in a D-dimensional space-time. In flexible
raneworlds, in addition to the SM fields, new degrees of freedom appear on the
brane associated to brane fluctuations. These new fields, known as branons, are
standard WIMPs (Weakly Interacting Massive Particles) and therefore natural
dark matter candidates, whose spontaneous annihilations can provide first
evidences for this scenario.
| astro-ph hep-ph | it has been suggested that our universe could be a 3dimensional brane where the sm fields live embedded in a ddimensional spacetime in flexible raneworlds in addition to the sm fields new degrees of freedom appear on the brane associated to brane fluctuations these new fields known as branons are standard wimps weakly interacting massive particles and therefore natural dark matter candidates whose spontaneous annihilations can provide first evidences for this scenario | [['it', 'has', 'been', 'suggested', 'that', 'our', 'universe', 'could', 'be', 'a', '3dimensional', 'brane', 'where', 'the', 'sm', 'fields', 'live', 'embedded', 'in', 'a', 'ddimensional', 'spacetime', 'in', 'flexible', 'raneworlds', 'in', 'addition', 'to', 'the', 'sm', 'fields', 'new', 'degrees', 'of', 'freedom', 'appear', 'on', 'the', 'brane', 'associated', 'to', 'brane', 'fluctuations', 'these', 'new', 'fields', 'known', 'as', 'branons', 'are', 'standard', 'wimps', 'weakly', 'interacting', 'massive', 'particles', 'and', 'therefore', 'natural', 'dark', 'matter', 'candidates', 'whose', 'spontaneous', 'annihilations', 'can', 'provide', 'first', 'evidences', 'for', 'this', 'scenario']] | [-0.13511529598962252, 0.24790197055996724, -0.0918563176602335, 0.12598163200850584, -0.13205476839121588, -0.13728305057320797, -0.05280158847314634, 0.28909386183925523, -0.18779111709970403, -0.30175393369888337, 0.03408956615595331, -0.26117102193160796, -0.09309811768790996, 0.12605810466035544, -0.027225381497975806, -0.045387993409285246, -0.048265876374732126, 0.06390072256826769, 0.0270935124504498, -0.3120777714984413, 0.28232149112786, 0.04067276189969459, 0.22925924529439548, 0.00293542242044924, 0.08619333354388954, -0.05322336505206538, 0.02564584267076472, 0.014179918993736657, -0.10577927966994434, 0.0934590283177898, 0.20125072147749679, 0.08458049918367515, 0.11461195434299364, -0.45191331269403157, -0.2914523283859164, 0.1820186977750215, 0.25411991994749283, 0.13457148861874577, -0.1409155993204249, -0.34279668332457963, 0.07025485564495476, -0.157733135974743, -0.16715725909420093, -0.07278713517048409, -0.0069214445276474445, -0.08589589102587229, -0.26500192156035296, 0.09509130087222012, 0.008669745555790273, -0.03133649783025325, -0.032755134099254936, -0.09341632126843635, -0.04603504662690553, -0.0025135949122863754, 0.11832813734949475, 0.03142557603398889, 0.19197257573414647, -0.16751412597720997, -0.155018381144799, 0.4313794624217799, -0.10320639662431474, -0.2141740290959641, 0.2589390381160651, -0.134513594039624, -0.15749653960983137, 0.13911317609919524, 0.19467828043697166, 0.14269860770920634, -0.19455655253636586, 0.18622967477438604, -0.05844031657997362, 0.15039717282732606, 0.04923033776601225, 0.09454825263417943, 0.38791726045572844, 0.14940373836950938, 0.02474709145698539, 0.09159731944124411, -0.041808152988612075, -0.1287698713819903, -0.3566915823120466, -0.189894606897109, -0.1311923058533018, 0.04496975363442071, -0.10430856118889519, -0.14063690085960945, 0.32544729955704277, 0.11051730489404216, 0.1607781747933215, -0.03731318271692685, 0.24756237531316952, 0.01551774011032892, 0.08513670133977709, 0.05229420317861606, 0.31868390425790466, 0.10532025276670154, 0.08405269056060155, -0.11542306469202461, -0.1028470761728027, -0.008352700214255864] |
708.0236 | The Chemical Evolution Of High Z Galaxies From The Relative Abundances
Of N, Si, S, And Fe In Damped Lyman Alpha Systems | Abundances of N, Si, S, and Fe for 45 damped Lyman alpha systems (DLAs) have
been compiled and detailed one-zone chemical evolution models have been
constructed for 30 of them. Assuming continuous star formation, we found that
final abundances in each object can be modelled by adjusting only two
parameters, i.e. its time-averaged star formation efficiency and evolutionary
age, with ranges in our sample of 0.01-1.5 Gyr^-1 and 0.18-2.0 Gyr,
respectively. In addition, average star formation efficiency and evolutionary
age appear to be anticorrelated for the sample, suggesting that the star
formation efficiency in a typical DLA decreases with age. At the same time,
N/Si in DLAs is directly linked to an object's age. There is an apparent
bimodality in the distribution of N/Si values which could be the result of a
statistical accident or an effect produced by a truncated or flattened IMF. We
find that the mean and small dispersion of Si/Fe values is related to the
generally young ages of DLAs, wherein not all Fe has yet been expelled by Type
Ia supernovae. Finally, the large scatter and generally lower values of N/Si of
DLAs with respect to blue compact galaxies, despite their partially overlapping
metallicities, indicate that DLAs are generally younger than the latter.
| astro-ph | abundances of n si s and fe for 45 damped lyman alpha systems dlas have been compiled and detailed onezone chemical evolution models have been constructed for 30 of them assuming continuous star formation we found that final abundances in each object can be modelled by adjusting only two parameters ie its timeaveraged star formation efficiency and evolutionary age with ranges in our sample of 00115 gyr1 and 01820 gyr respectively in addition average star formation efficiency and evolutionary age appear to be anticorrelated for the sample suggesting that the star formation efficiency in a typical dla decreases with age at the same time nsi in dlas is directly linked to an objects age there is an apparent bimodality in the distribution of nsi values which could be the result of a statistical accident or an effect produced by a truncated or flattened imf we find that the mean and small dispersion of sife values is related to the generally young ages of dlas wherein not all fe has yet been expelled by type ia supernovae finally the large scatter and generally lower values of nsi of dlas with respect to blue compact galaxies despite their partially overlapping metallicities indicate that dlas are generally younger than the latter | [['abundances', 'of', 'n', 'si', 's', 'and', 'fe', 'for', '45', 'damped', 'lyman', 'alpha', 'systems', 'dlas', 'have', 'been', 'compiled', 'and', 'detailed', 'onezone', 'chemical', 'evolution', 'models', 'have', 'been', 'constructed', 'for', '30', 'of', 'them', 'assuming', 'continuous', 'star', 'formation', 'we', 'found', 'that', 'final', 'abundances', 'in', 'each', 'object', 'can', 'be', 'modelled', 'by', 'adjusting', 'only', 'two', 'parameters', 'ie', 'its', 'timeaveraged', 'star', 'formation', 'efficiency', 'and', 'evolutionary', 'age', 'with', 'ranges', 'in', 'our', 'sample', 'of', '00115', 'gyr1', 'and', '01820', 'gyr', 'respectively', 'in', 'addition', 'average', 'star', 'formation', 'efficiency', 'and', 'evolutionary', 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'their', 'partially', 'overlapping', 'metallicities', 'indicate', 'that', 'dlas', 'are', 'generally', 'younger', 'than', 'the', 'latter']] | [-0.026926600765706837, 0.17430131917487288, -0.024218585990045383, 0.09685206281444157, -0.06213343737462473, -0.09588837134314404, 0.049196472074296595, 0.46249668836449653, -0.1589429237978794, -0.3774876437199995, 0.018447912798672556, -0.2760455261753953, -0.008612379197769119, 0.17900627817573916, -0.04723911506975444, -0.04387520999004581, 0.058790874399204295, -0.05671310612418945, -0.05799340655586282, -0.32192392300832384, 0.28605175139787403, 0.05324642325117104, 0.1715972347304243, -0.037420170667782596, 0.029857613223352907, -0.1461044998259108, -0.04774988333330206, 0.022534430524163342, -0.1391058562235999, 0.019270502881187458, 0.24150649619712014, 0.13082013549035695, 0.23218648515839652, -0.3356098049645203, -0.22415821815085607, 0.10392542530957988, 0.2393720037414094, 0.05036443705863999, -0.09694148312156327, 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708.0237 | Fractal states in quantum information processing | The fractal character of some quantum properties has been shown for systems
described by continuous variables. Here, a definition of quantum fractal states
is given that suits the discrete systems used in quantum information
processing, including quantum coding and quantum computing. Several important
examples are provided.
| quant-ph | the fractal character of some quantum properties has been shown for systems described by continuous variables here a definition of quantum fractal states is given that suits the discrete systems used in quantum information processing including quantum coding and quantum computing several important examples are provided | [['the', 'fractal', 'character', 'of', 'some', 'quantum', 'properties', 'has', 'been', 'shown', 'for', 'systems', 'described', 'by', 'continuous', 'variables', 'here', 'a', 'definition', 'of', 'quantum', 'fractal', 'states', 'is', 'given', 'that', 'suits', 'the', 'discrete', 'systems', 'used', 'in', 'quantum', 'information', 'processing', 'including', 'quantum', 'coding', 'and', 'quantum', 'computing', 'several', 'important', 'examples', 'are', 'provided']] | [-0.128991892315832, 0.15949466320402597, -0.12035941017751137, 0.08972696952127002, 0.0016736770858583243, -0.1931082216678592, -0.026932938950662705, 0.33914309092189954, -0.2867854974920983, -0.22040538858298375, 0.12189440034917029, -0.2594802296295276, -0.2366924720370899, 0.29567707417046896, -0.08542698740189814, 0.2238874547790898, -0.0021391700264876304, 0.08303274671830561, -0.03940329578725378, -0.27470051456981787, 0.28994888885189657, 0.0038942346000112593, 0.2823490984029258, 0.03828124024743295, 0.11665884968217301, -0.01613082468469182, -0.03309448061348951, 0.044872614555060863, -0.10803242406947665, 0.15143522882768276, 0.299599839374423, 0.1350442542562909, 0.2765578842802864, -0.4109733040323076, -0.3177351920420061, 0.049806720982103245, 0.12594702865159058, 0.1301910937966212, -0.09900535932620583, -0.32961159887845104, 0.08845965586521704, -0.15167986868840197, -0.08483306135293907, -0.1561595746518477, 0.06219666329738886, 0.006784896416913556, -0.17951716296374798, 0.02217662905383369, 0.0947911721330298, 0.09751923297248456, -0.01359985067266161, -0.07846889531482822, 0.040478189840264946, 0.1736546576063594, -0.10679860674755891, -0.049167651695745954, 0.12986334980182027, -0.1398654436393965, -0.25256703109682904, 0.42794709567628475, 0.05028807410828607, -0.24049787049222252, 0.20183059631887337, -0.05494719759419398, -0.1792163666560436, 0.05529190602955287, 0.12826753952337996, 0.04522463943525825, -0.14169517357874176, 0.1642217895450417, 0.0035893984503396177, 0.16412524854683358, 0.04950543925287607, 0.17378645626139705, 0.19225599973098093, 0.10450551140567531, 0.01715629988188005, 0.18465986762843703, -0.03226761529272746, -0.2529463329676377, -0.2658230568403783, -0.19684488105628153, -0.30767342251846974, 0.08339282488652869, -0.0674846535342943, -0.18208267317221843, 0.38993233571881836, 0.10651383785854864, 0.14123883646022042, -0.03999350095451202, 0.2423117924886553, 0.15557652257342378, 0.05102777851583517, 0.09654935211469622, 0.1543640469576728, 0.20913944891957648, 0.08000115995578792, -0.1524420978359716, 0.07352201537350597, 0.05365323008078596] |
708.0238 | On the 2-point function of the O(N) model | The self-energy of the critical 3-dimensional O(N) model is calculated. The
analysis is performed in the context of the Non-Perturbative Renormalization
Group, by exploiting an approximation which takes into account contributions of
an infinite number of vertices. A very simple calculation yields the 2-point
function in the whole range of momenta, from the UV Gaussian regime to the
scaling one. Results are in good agreement with best estimates in the
literature for any value of N in all momenta regimes. This encourages the use
of this simple approximation procedure to calculate correlation functions at
finite momenta in other physical situations.
| cond-mat.stat-mech hep-th | the selfenergy of the critical 3dimensional on model is calculated the analysis is performed in the context of the nonperturbative renormalization group by exploiting an approximation which takes into account contributions of an infinite number of vertices a very simple calculation yields the 2point function in the whole range of momenta from the uv gaussian regime to the scaling one results are in good agreement with best estimates in the literature for any value of n in all momenta regimes this encourages the use of this simple approximation procedure to calculate correlation functions at finite momenta in other physical situations | [['the', 'selfenergy', 'of', 'the', 'critical', '3dimensional', 'on', 'model', 'is', 'calculated', 'the', 'analysis', 'is', 'performed', 'in', 'the', 'context', 'of', 'the', 'nonperturbative', 'renormalization', 'group', 'by', 'exploiting', 'an', 'approximation', 'which', 'takes', 'into', 'account', 'contributions', 'of', 'an', 'infinite', 'number', 'of', 'vertices', 'a', 'very', 'simple', 'calculation', 'yields', 'the', '2point', 'function', 'in', 'the', 'whole', 'range', 'of', 'momenta', 'from', 'the', 'uv', 'gaussian', 'regime', 'to', 'the', 'scaling', 'one', 'results', 'are', 'in', 'good', 'agreement', 'with', 'best', 'estimates', 'in', 'the', 'literature', 'for', 'any', 'value', 'of', 'n', 'in', 'all', 'momenta', 'regimes', 'this', 'encourages', 'the', 'use', 'of', 'this', 'simple', 'approximation', 'procedure', 'to', 'calculate', 'correlation', 'functions', 'at', 'finite', 'momenta', 'in', 'other', 'physical', 'situations']] | [-0.10725563244894147, 0.09988622804899933, -0.12229029111331328, 0.07568915269337595, -0.028112254911102353, -0.06973168271128088, 0.0448356593772769, 0.3476736132055521, -0.2073464147374034, -0.27856541814282537, 0.00604944258229807, -0.29242056868039074, -0.08809807408833877, 0.2048232643562369, 0.0164709135517478, 0.032154566179960965, 0.030307163124380167, 0.033788316352292895, -0.11641751118528192, -0.21290173842571675, 0.3170602961000986, 0.0373531423509121, 0.26675360013730826, 0.06433795161545276, 0.08101891433820128, 0.06148206031066365, -0.03153788757044822, 0.021847887132316827, -0.12444129826501012, 0.05160740050952881, 0.2530480957299005, 0.039909109179861846, 0.27125422509154307, -0.3796141936816275, -0.19508388068526983, 0.07718840218149126, 0.15995505467522889, 0.11177157702273689, -0.0010968490375671536, -0.20591584661975504, 0.044374328586272896, -0.1655134852626361, -0.15398991210851817, -0.07965110604651272, -0.00529875926207751, -0.016112789651378988, -0.29800148045644165, 0.07810374528169632, 0.0018398130778223276, 0.015254335794597864, -0.05808778011240065, -0.14317973847966642, 0.013982645452488214, 0.16928827839903535, 0.058254532631253825, 0.050957280579023066, 0.08038946577813476, -0.16554216419346632, -0.0660430211381754, 0.39643514839001, -0.05126571039669216, -0.216971043322701, 0.14947545979637653, -0.19634820484090595, -0.13623146451078355, 0.1583150776522234, 0.1374223517952487, 0.11320281894440995, -0.16870575782842934, 0.1340161229111254, -0.0521174155920744, 0.13663843794493005, 0.025158878990914672, 0.037931455168218234, 0.1428500447794795, 0.12107918766327203, 0.022153603862971067, 0.13485228488978465, -0.040358804583083836, -0.12301339468453079, -0.37755876801908017, -0.08466947161592543, -0.1974515594553668, 0.014757570420624689, -0.16292000568006187, -0.17094157793559134, 0.39849955826997757, 0.14401781128719449, 0.25903374386020006, 0.08280408650753088, 0.3036912214756012, 0.16340051244595089, 0.0822474506823346, 0.07087941723875701, 0.23912194361677394, 0.12919760989490897, 0.03915005548391491, -0.2283310205093585, 0.028162864674814044, 0.11420802042470314] |
708.0239 | Minimal Universal Extra Dimensions | Highly degenerate spectra associated with universal extra dimensions (UED)
provide an interesting phenomenology not only from the point of view of
cosmology and astrophysics, but also for colliders. We study these exotic
signals for the simplest case, called minimal UED, where it is natural to find
slow charged particles, displaced vertices, tracks with non-vanishing impact
parameters, track kinks, and even vanishing charged tracks.
| hep-ph | highly degenerate spectra associated with universal extra dimensions ued provide an interesting phenomenology not only from the point of view of cosmology and astrophysics but also for colliders we study these exotic signals for the simplest case called minimal ued where it is natural to find slow charged particles displaced vertices tracks with nonvanishing impact parameters track kinks and even vanishing charged tracks | [['highly', 'degenerate', 'spectra', 'associated', 'with', 'universal', 'extra', 'dimensions', 'ued', 'provide', 'an', 'interesting', 'phenomenology', 'not', 'only', 'from', 'the', 'point', 'of', 'view', 'of', 'cosmology', 'and', 'astrophysics', 'but', 'also', 'for', 'colliders', 'we', 'study', 'these', 'exotic', 'signals', 'for', 'the', 'simplest', 'case', 'called', 'minimal', 'ued', 'where', 'it', 'is', 'natural', 'to', 'find', 'slow', 'charged', 'particles', 'displaced', 'vertices', 'tracks', 'with', 'nonvanishing', 'impact', 'parameters', 'track', 'kinks', 'and', 'even', 'vanishing', 'charged', 'tracks']] | [-0.08842249064233214, 0.2493215883614972, -0.03863468449858446, 0.1583514226367697, -0.11558712425360841, -0.29086174894242534, -0.04686531810356038, 0.30444748756579226, -0.228428233326191, -0.30444405507296324, 0.0442845484995771, -0.32123475551368696, -0.08126213188682284, 0.17075133702111622, -0.01924148586297792, 0.003042939028495716, 0.07810056543657704, 0.0415710041947138, -0.03940320346460101, -0.20685707288424646, 0.30814602393804796, 0.08635401391675548, 0.19814890019950412, 0.04819300667648869, 0.143095031291956, 0.012664038347937757, -0.011873225962358808, -0.0032440019209706594, -0.1724111247098162, 0.04215049003029153, 0.20516841695274388, 0.06308913003239366, 0.07584807191724105, -0.39375685137652217, -0.1954693001887155, 0.19015159046218272, 0.17256562238825218, 0.11087113346845384, -0.14330312721283425, -0.23637105395559163, 0.0648279226614192, -0.1544098360316148, -0.199517158333153, -0.07560946830799656, 0.029755114917717283, -0.06532091680278498, -0.22866475538513253, 0.05955273722296595, -0.013214783698675178, 0.004079500771319819, -0.022433561387486638, -0.11797514675362479, -0.0651625799798658, 0.05599501264089393, 0.13669761418483206, -0.02061628141174359, 0.14381539478661523, -0.21067309647887236, -0.1654577343872497, 0.37560020035339725, -0.059430623338336035, -0.22005813636092675, 0.24695817368578107, -0.20091038062754604, -0.17805095502574528, 0.1536765850282141, 0.16149025315803195, 0.1296766817067114, -0.14168477745815403, 0.14177298492434184, -0.03435928009391304, 0.15170438264151073, 0.07720554773769682, 0.10991141244968665, 0.29396160400753457, 0.15710617349083936, 0.06218269375699853, 0.08413005912942546, -0.06763191226341334, -0.09998811781406403, -0.3693131720083618, -0.12016278700644357, -0.097932023838872, 0.041664054454904835, -0.0842378726372281, -0.1963978883706861, 0.3801155881217075, 0.1036085429941378, 0.26296503926139503, -0.029304732672042318, 0.2728506458538865, 0.03058374562256393, 0.016373226803446574, 0.0684834508435978, 0.2478317015893048, 0.08418722842479982, 0.08416337958197036, -0.18198381993727433, -0.016788291863151013, 0.03982060857945018] |
708.024 | Double Horizon Limit, AdS Geometry and Entropy Function | We start from a generic metric which describes four dimensional stationary
black holes in an arbitrary theory of gravity and show that the AdS_2 part of
the near horizon geometry is a consequence of the double-horizon limit and
finiteness . We also show that the field configurations of the near horizon are
determined if the same conditions are applied to the equations of motion. This
is done by showing that in the double-horizon limit field equations at the
horizon decouple from the bulk of the space. Solving these equations gives the
near horizon field configurations. It is shown that these decoupled equations
can be obtained from an action derived from the original action by applying the
double-horizon condition. Our results agree with the entropy function method.
| hep-th | we start from a generic metric which describes four dimensional stationary black holes in an arbitrary theory of gravity and show that the ads_2 part of the near horizon geometry is a consequence of the doublehorizon limit and finiteness we also show that the field configurations of the near horizon are determined if the same conditions are applied to the equations of motion this is done by showing that in the doublehorizon limit field equations at the horizon decouple from the bulk of the space solving these equations gives the near horizon field configurations it is shown that these decoupled equations can be obtained from an action derived from the original action by applying the doublehorizon condition our results agree with the entropy function method | [['we', 'start', 'from', 'a', 'generic', 'metric', 'which', 'describes', 'four', 'dimensional', 'stationary', 'black', 'holes', 'in', 'an', 'arbitrary', 'theory', 'of', 'gravity', 'and', 'show', 'that', 'the', 'ads_2', 'part', 'of', 'the', 'near', 'horizon', 'geometry', 'is', 'a', 'consequence', 'of', 'the', 'doublehorizon', 'limit', 'and', 'finiteness', 'we', 'also', 'show', 'that', 'the', 'field', 'configurations', 'of', 'the', 'near', 'horizon', 'are', 'determined', 'if', 'the', 'same', 'conditions', 'are', 'applied', 'to', 'the', 'equations', 'of', 'motion', 'this', 'is', 'done', 'by', 'showing', 'that', 'in', 'the', 'doublehorizon', 'limit', 'field', 'equations', 'at', 'the', 'horizon', 'decouple', 'from', 'the', 'bulk', 'of', 'the', 'space', 'solving', 'these', 'equations', 'gives', 'the', 'near', 'horizon', 'field', 'configurations', 'it', 'is', 'shown', 'that', 'these', 'decoupled', 'equations', 'can', 'be', 'obtained', 'from', 'an', 'action', 'derived', 'from', 'the', 'original', 'action', 'by', 'applying', 'the', 'doublehorizon', 'condition', 'our', 'results', 'agree', 'with', 'the', 'entropy', 'function', 'method']] | [-0.12961398395802826, 0.11228257618495263, -0.12310245802998543, 0.049723466956987976, -0.02542352285794914, -0.07394961550086737, -0.03390159427840263, 0.28746376898884773, -0.26434972853958605, -0.2659654242545366, 0.13685541486553848, -0.2792913987413049, -0.1444958624597639, 0.21225380028784274, -0.06194045811146498, 0.0016028376407921313, 0.0486317734294571, 0.0943934007100761, -0.09595397382974624, -0.2398131468296051, 0.37855578649416566, 0.03182801304757595, 0.27190104658529163, 0.0186164614148438, 0.1538946390338242, -0.003060892969369888, 0.024646161914803087, 0.11621855219057761, -0.14039487154898234, 0.061473189145326616, 0.20076858881115914, 0.09988001191616058, 0.18826579598709942, -0.4235082191377878, -0.20546540885418654, 0.034893922463059425, 0.12796633204817773, 0.16006708454620094, -0.02268383440375328, -0.30192090818285944, 0.09022661887109279, -0.12219848407618701, -0.190565336599946, -0.04721807065606117, -0.01071497427020222, -0.025052198629826307, -0.24415312811732293, 0.05908674893877469, 0.06545288620889186, -0.010928792536258697, -0.15223050468042493, -0.05928992757201195, -0.06015266029722988, 0.12011568266898394, 0.10229396556131541, 0.040097928775474426, 0.12623313399031758, -0.12585915428661973, -0.08914803627319634, 0.3454966837465763, -0.0931503493487835, -0.21941387721593492, 0.161013256508857, -0.1866148566454649, -0.08533774451538921, 0.1456617899890989, 0.11067284394055604, 0.19411927988100797, -0.15142211644351483, 0.17235153164248915, -0.04457245571166277, 0.11965919873118401, 0.0781713932082057, -0.006126708380877971, 0.2510324345603585, 0.09141381589462981, 0.08410471847653389, 0.15486239913199096, -0.03841551192104817, -0.12340577623993158, -0.37824363984167575, -0.11686198181658983, -0.16874619454890488, 0.07978915726393461, -0.1307575779443141, -0.1436658800325822, 0.3168408135958016, 0.16390268052509055, 0.18088971035555004, 0.05993107272032648, 0.22790232997541898, 0.18824100874084979, 0.0591359947710298, 0.12560737572982908, 0.2973089270144701, 0.10867376011423767, 0.08037949316762388, -0.24457724882289766, -0.046635219087824226, 0.12035053753107786] |
708.0241 | The impact of the fourth SM family on the Higgs observability at the LHC | It is shown that if the fourth SM fermion family exists then the Higgs boson
could be observed at the LHC with an integrated luminosity of few fb-1. The
Higgs discovery potential for different channels is discussed in the presence
of the fourth SM family.
| hep-ph | it is shown that if the fourth sm fermion family exists then the higgs boson could be observed at the lhc with an integrated luminosity of few fb1 the higgs discovery potential for different channels is discussed in the presence of the fourth sm family | [['it', 'is', 'shown', 'that', 'if', 'the', 'fourth', 'sm', 'fermion', 'family', 'exists', 'then', 'the', 'higgs', 'boson', 'could', 'be', 'observed', 'at', 'the', 'lhc', 'with', 'an', 'integrated', 'luminosity', 'of', 'few', 'fb1', 'the', 'higgs', 'discovery', 'potential', 'for', 'different', 'channels', 'is', 'discussed', 'in', 'the', 'presence', 'of', 'the', 'fourth', 'sm', 'family']] | [-0.07594693890617539, 0.22416181865749726, -0.0123270059728788, 0.13315861279455324, -0.0977196001344257, -0.18978668799002965, -0.05041379845804638, 0.3342308706707425, -0.25924022982103956, -0.2709306422414051, 0.037053819174050456, -0.3446268134439985, -0.022607106073862977, 0.15897084070990483, 0.05920036070876651, 0.0746282412049671, 0.06452892447252655, 0.0649506823056274, -0.052271036612283855, -0.37311242594280175, 0.2918068615719676, 0.008698193811708027, 0.21668842107885414, 0.07328857192769647, 0.07730842460360791, -0.022029675450176, 0.03535132404002878, -0.1167697931225929, -0.07093091582856788, 0.08390914186214407, 0.20099277924746276, 0.08037347121992044, 0.18077318680783114, -0.24471301560600597, -0.12316294676727718, 0.21040300478537877, 0.17431600069006284, 0.06122495990453495, -0.12445674969090356, -0.3168767417677575, 0.18178986643130582, -0.2502649394174417, -0.16746896718525225, -0.0025357054080814125, -0.0026865411549806596, -0.1473627494234178, -0.32910141555799377, 0.04758164027912749, -0.06960920542478562, 0.058041604111591975, 0.018255164494944943, -0.18503180794003937, -0.12887748658864034, -0.07772396337240935, 0.1519345715538495, 0.016335696569229993, 0.11515775954143868, -0.1411297924609648, -0.18527336133023103, 0.35111037694279934, -0.12132660454759996, -0.1305889898393717, 0.17725544017222192, -0.18889786566918096, -0.12166398810675472, 0.14532512140770754, 0.19616487531198395, -0.00016039396739668315, -0.23967425256139702, 0.19395742774423624, -0.060314452855123414, 0.1916691596309344, 0.03089037893546952, 0.06810977741455039, 0.29786853020389875, 0.21063588352666962, 0.06626106016337871, 0.06706793287303299, -0.10424779479702313, -0.08449914099441634, -0.46842616067992315, -0.1524068271741271, -0.09266295871800846, 0.01807115002431803, -0.0517376791452989, -0.1027675175437859, 0.38691354791323346, 0.13083150401814944, 0.2261180319926805, -0.026925976103585627, 0.20849973604134803, 0.16493680771026348, 0.11868841956473059, 0.04027447654969162, 0.3781209801634153, 0.11593264353772005, 0.12227154506577385, -0.20915220707861915, 0.017139428502155676, 0.057499112287122345] |
708.0242 | Distributing the Kalman Filter for Large-Scale Systems | This paper derives a \emph{distributed} Kalman filter to estimate a sparsely
connected, large-scale, $n-$dimensional, dynamical system monitored by a
network of $N$ sensors. Local Kalman filters are implemented on the
($n_l-$dimensional, where $n_l\ll n$) sub-systems that are obtained after
spatially decomposing the large-scale system. The resulting sub-systems
overlap, which along with an assimilation procedure on the local Kalman
filters, preserve an $L$th order Gauss-Markovian structure of the centralized
error processes. The information loss due to the $L$th order Gauss-Markovian
approximation is controllable as it can be characterized by a divergence that
decreases as $L\uparrow$. The order of the approximation, $L$, leads to a lower
bound on the dimension of the sub-systems, hence, providing a criterion for
sub-system selection. The assimilation procedure is carried out on the local
error covariances with a distributed iterate collapse inversion (DICI)
algorithm that we introduce. The DICI algorithm computes the (approximated)
centralized Riccati and Lyapunov equations iteratively with only local
communication and low-order computation. We fuse the observations that are
common among the local Kalman filters using bipartite fusion graphs and
consensus averaging algorithms. The proposed algorithm achieves full
distribution of the Kalman filter that is coherent with the centralized Kalman
filter with an $L$th order Gaussian-Markovian structure on the centralized
error processes. Nowhere storage, communication, or computation of
$n-$dimensional vectors and matrices is needed; only $n_l \ll n$ dimensional
vectors and matrices are communicated or used in the computation at the
sensors.
| cs.IT math.IT | this paper derives a emphdistributed kalman filter to estimate a sparsely connected largescale ndimensional dynamical system monitored by a network of n sensors local kalman filters are implemented on the n_ldimensional where n_lll n subsystems that are obtained after spatially decomposing the largescale system the resulting subsystems overlap which along with an assimilation procedure on the local kalman filters preserve an lth order gaussmarkovian structure of the centralized error processes the information loss due to the lth order gaussmarkovian approximation is controllable as it can be characterized by a divergence that decreases as luparrow the order of the approximation l leads to a lower bound on the dimension of the subsystems hence providing a criterion for subsystem selection the assimilation procedure is carried out on the local error covariances with a distributed iterate collapse inversion dici algorithm that we introduce the dici algorithm computes the approximated centralized riccati and lyapunov equations iteratively with only local communication and loworder computation we fuse the observations that are common among the local kalman filters using bipartite fusion graphs and consensus averaging algorithms the proposed algorithm achieves full distribution of the kalman filter that is coherent with the centralized kalman filter with an lth order gaussianmarkovian structure on the centralized error processes nowhere storage communication or computation of ndimensional vectors and matrices is needed only n_l ll n dimensional vectors and matrices are communicated or used in the computation at the sensors | [['this', 'paper', 'derives', 'a', 'emphdistributed', 'kalman', 'filter', 'to', 'estimate', 'a', 'sparsely', 'connected', 'largescale', 'ndimensional', 'dynamical', 'system', 'monitored', 'by', 'a', 'network', 'of', 'n', 'sensors', 'local', 'kalman', 'filters', 'are', 'implemented', 'on', 'the', 'n_ldimensional', 'where', 'n_lll', 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'computation', 'at', 'the', 'sensors']] | [-0.15535322608547691, 0.050732285237514274, -0.073522386426592, 0.017725203603850274, -0.029411627113333214, -0.1842030942308433, 0.026130973363457165, 0.3829031692129438, -0.31395605027108736, -0.28291949698620517, 0.14887883187140055, -0.2571437619236784, -0.15215919959870086, 0.1195196625918312, -0.06975371346204116, 0.08931113829552803, 0.07685398311232743, 0.0654294331456818, -0.07485432840704047, -0.2915037829378296, 0.25730822564193817, 0.09216587361272262, 0.2650717475168083, -0.10295430436406447, 0.15949111132292235, 0.024431905422724137, -0.04724232457051782, 0.009571437725453111, -0.0702498949241999, 0.1268297540631307, 0.2527978207865406, 0.14396541791097464, 0.31719751057174544, -0.3997011286449497, -0.15638027020588355, 0.13461773415784473, 0.19108462550730504, 0.08713092757844487, 0.032522543238820104, -0.32045627950650196, 0.084397854078966, -0.14463936993257528, -0.07367295035383785, -0.07520199780271429, -0.03336594641087172, 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0.0816320953283297, 0.16559651353619184, 0.17817749114727358, 0.15752515512032678, 0.0746206214350304, -0.21250335241708418, 0.060889632739734065, 0.12963274043336834] |
708.0243 | Effects of Orbital Eccentricity on Extrasolar Planet Transit Detection
and Lightcurves | It is shown herein that planets with eccentric orbits are more likely to
transit than circularly orbiting planets with the same semimajor axis by a
factor of (1-e^2)^{-1}. If the orbital parameters of discovered transiting
planets are known, as from follow-up radial velocity observations, then the
transit-detected planet population is easily debiased of this effect. The
duration of a planet's transit depends upon of its eccentricity and longitude
of periastron; transits near periastron are shorter, and those near apoastron
last longer, for a given impact parameter. If fitting for the stellar radius
with the other transit parameters, this effect causes a systematic error in the
resulting measurements. If the stellar radius is instead held fixed at a value
measured independently, then it is possible to place a lower limit on the
planet's eccentricity using photometry alone. Orbital accelerations cause a
difference in the planet's ingress and egress durations that lead to an
asymmetry in the transit lightcurve that could be used along with the transit
velocity measurement to uniquely measure the planet's eccentricity and
longitude of periapsis. However, the effect is too small to be measured with
current technology. The habitability of transiting terrestrial planets found by
Kepler depends on those planets' orbital eccentricities. While Kepler will be
able to place lower limits on those planets' orbital eccentricity, the actual
value for any given planet will likely remain unknown.
| astro-ph | it is shown herein that planets with eccentric orbits are more likely to transit than circularly orbiting planets with the same semimajor axis by a factor of 1e21 if the orbital parameters of discovered transiting planets are known as from followup radial velocity observations then the transitdetected planet population is easily debiased of this effect the duration of a planets transit depends upon of its eccentricity and longitude of periastron transits near periastron are shorter and those near apoastron last longer for a given impact parameter if fitting for the stellar radius with the other transit parameters this effect causes a systematic error in the resulting measurements if the stellar radius is instead held fixed at a value measured independently then it is possible to place a lower limit on the planets eccentricity using photometry alone orbital accelerations cause a difference in the planets ingress and egress durations that lead to an asymmetry in the transit lightcurve that could be used along with the transit velocity measurement to uniquely measure the planets eccentricity and longitude of periapsis however the effect is too small to be measured with current technology the habitability of transiting terrestrial planets found by kepler depends on those planets orbital eccentricities while kepler will be able to place lower limits on those planets orbital eccentricity the actual value for any given planet will likely remain unknown | [['it', 'is', 'shown', 'herein', 'that', 'planets', 'with', 'eccentric', 'orbits', 'are', 'more', 'likely', 'to', 'transit', 'than', 'circularly', 'orbiting', 'planets', 'with', 'the', 'same', 'semimajor', 'axis', 'by', 'a', 'factor', 'of', '1e21', 'if', 'the', 'orbital', 'parameters', 'of', 'discovered', 'transiting', 'planets', 'are', 'known', 'as', 'from', 'followup', 'radial', 'velocity', 'observations', 'then', 'the', 'transitdetected', 'planet', 'population', 'is', 'easily', 'debiased', 'of', 'this', 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708.0244 | Extracting current-induced spins: spin boundary conditions at narrow
Hall contacts | We consider the possibility to extract spins that are generated by an
electric current in a two-dimensional electron gas with Rashba-Dresselhaus
spin-orbit interaction (R2DEG) in the Hall geometry. To this end, we discuss
boundary conditions for the spin accumulations between a spin-orbit coupled
region and contact without spin-orbit coupling, i.e. a normal two-dimensional
electron gas (2DEG). We demonstrate that in contrast to contacts that extend
along the whole sample, a spin accumulation can diffuse into the normal region
through finite contacts and detected by e.g. ferromagnets. For an
impedance-matched narrow contact the spin accumulation in the 2DEG is equal to
the current induced spin accumulation in the bulk of R2DEG up to a
geometry-dependent numerical factor.
| cond-mat.mes-hall | we consider the possibility to extract spins that are generated by an electric current in a twodimensional electron gas with rashbadresselhaus spinorbit interaction r2deg in the hall geometry to this end we discuss boundary conditions for the spin accumulations between a spinorbit coupled region and contact without spinorbit coupling ie a normal twodimensional electron gas 2deg we demonstrate that in contrast to contacts that extend along the whole sample a spin accumulation can diffuse into the normal region through finite contacts and detected by eg ferromagnets for an impedancematched narrow contact the spin accumulation in the 2deg is equal to the current induced spin accumulation in the bulk of r2deg up to a geometrydependent numerical factor | [['we', 'consider', 'the', 'possibility', 'to', 'extract', 'spins', 'that', 'are', 'generated', 'by', 'an', 'electric', 'current', 'in', 'a', 'twodimensional', 'electron', 'gas', 'with', 'rashbadresselhaus', 'spinorbit', 'interaction', 'r2deg', 'in', 'the', 'hall', 'geometry', 'to', 'this', 'end', 'we', 'discuss', 'boundary', 'conditions', 'for', 'the', 'spin', 'accumulations', 'between', 'a', 'spinorbit', 'coupled', 'region', 'and', 'contact', 'without', 'spinorbit', 'coupling', 'ie', 'a', 'normal', 'twodimensional', 'electron', 'gas', '2deg', 'we', 'demonstrate', 'that', 'in', 'contrast', 'to', 'contacts', 'that', 'extend', 'along', 'the', 'whole', 'sample', 'a', 'spin', 'accumulation', 'can', 'diffuse', 'into', 'the', 'normal', 'region', 'through', 'finite', 'contacts', 'and', 'detected', 'by', 'eg', 'ferromagnets', 'for', 'an', 'impedancematched', 'narrow', 'contact', 'the', 'spin', 'accumulation', 'in', 'the', '2deg', 'is', 'equal', 'to', 'the', 'current', 'induced', 'spin', 'accumulation', 'in', 'the', 'bulk', 'of', 'r2deg', 'up', 'to', 'a', 'geometrydependent', 'numerical', 'factor']] | [-0.1844642637226028, 0.18988931550171528, 0.018450094695333718, -0.003852028465061857, -0.02098442934118538, -0.13226189225781382, 0.03793012990469211, 0.3903831227911277, -0.2692747227633127, -0.2629612145634989, -0.007465534456474543, -0.3046048151231126, -0.08613553533551137, 0.1948971760933075, 0.03062860326680126, -0.02705833410615461, -0.035159652872958726, -0.06171151969516486, -0.1451396446760842, -0.1860165366486303, 0.32345864679569913, -0.016187529745430015, 0.27431406904616507, 0.11452049061884745, 0.08482580452242441, 0.023899561321166784, 0.10042245911532327, 0.03559672406858258, -0.13647296212570437, 0.050391741288956585, 0.22178748563767345, -0.13132159593270012, 0.1978071352401585, -0.4894401539816483, -0.20667576580716854, 0.009341424804899776, 0.14867606910041087, 0.16289920177670164, -0.07712920994514175, -0.29321827267280276, 0.03703154931294225, -0.20100248475934854, -0.16148121016949676, -0.029988060864668927, 0.005527791473197571, -0.035613954197942166, -0.2754155850740509, 0.09054278749809191, 0.09133931858007584, 0.044248335953932585, -0.06219403585010584, -0.04157214383839777, -0.07166242986721427, 0.09250638017577953, 0.026314523259970246, 0.04276341431684334, 0.19000702695829155, -0.15886385547528653, -0.10188106285906479, 0.30947850683802053, -0.0985865380631335, -0.21461097847899063, 0.20106583668670633, -0.231936422940507, -0.01097636418662181, 0.15946588445487514, 0.17285438885160706, 0.0581864372310392, -0.17166870298566655, 0.0696609929651267, -0.028168218164386128, 0.11656542572707526, 0.031263172017867887, -0.00676450972739411, 0.30511136207598866, 0.1637083748028728, 0.09785949499673095, 0.15237816887205108, -0.1768307179976418, -0.06754373355866655, -0.23622274722315764, -0.19190577517688406, -0.21697204245515822, 0.12201987954444792, -0.03834707062796632, -0.15023413424690565, 0.3766324099953891, 0.16123289112900302, 0.20901198740721794, -0.05593960176695857, 0.29801842469003115, 0.09969055030102793, 0.09419045246026495, 0.05589564078029964, 0.24747763772642142, 0.16969053652709382, 0.04980025877931008, -0.3192656930870981, 0.04128583400355031, -0.01883314234274031] |
708.0245 | Simplicity of C*-algebras associated to row-finite locally convex
higher-rank graphs | In previous work, the authors showed that the C*-algebra C*(\Lambda) of a
row-finite higher-rank graph \Lambda with no sources is simple if and only if
\Lambda is both cofinal and aperiodic. In this paper, we generalise this result
to row-finite higher-rank graphs which are locally convex (but may contain
sources). Our main tool is Farthing's "removing sources" construction which
embeds a row-finite locally convex higher-rank graph in a row-finite
higher-rank graph with no sources in such a way that the associated C*-algebras
are Morita equivalent.
| math.OA | in previous work the authors showed that the calgebra clambda of a rowfinite higherrank graph lambda with no sources is simple if and only if lambda is both cofinal and aperiodic in this paper we generalise this result to rowfinite higherrank graphs which are locally convex but may contain sources our main tool is farthings removing sources construction which embeds a rowfinite locally convex higherrank graph in a rowfinite higherrank graph with no sources in such a way that the associated calgebras are morita equivalent | [['in', 'previous', 'work', 'the', 'authors', 'showed', 'that', 'the', 'calgebra', 'clambda', 'of', 'a', 'rowfinite', 'higherrank', 'graph', 'lambda', 'with', 'no', 'sources', 'is', 'simple', 'if', 'and', 'only', 'if', 'lambda', 'is', 'both', 'cofinal', 'and', 'aperiodic', 'in', 'this', 'paper', 'we', 'generalise', 'this', 'result', 'to', 'rowfinite', 'higherrank', 'graphs', 'which', 'are', 'locally', 'convex', 'but', 'may', 'contain', 'sources', 'our', 'main', 'tool', 'is', 'farthings', 'removing', 'sources', 'construction', 'which', 'embeds', 'a', 'rowfinite', 'locally', 'convex', 'higherrank', 'graph', 'in', 'a', 'rowfinite', 'higherrank', 'graph', 'with', 'no', 'sources', 'in', 'such', 'a', 'way', 'that', 'the', 'associated', 'calgebras', 'are', 'morita', 'equivalent']] | [-0.11437623829052816, 0.15116534105479895, -0.0586761408984395, 0.04699835991292881, -0.19927433898140276, -0.1544730997910457, -0.0437422648135994, 0.49591676030485404, -0.3215406407280603, -0.22204182603551695, 0.0900274925488269, -0.32426496314084424, -0.14654107108002618, 0.14811363571234756, -0.17061010899487883, -0.05585951821523763, 0.15309786389670557, 0.12232124416290649, 0.030834204151428173, -0.20954576266584418, 0.3963408054052187, -0.03619401420222684, 0.144072057901039, 0.053090283957620464, 0.05422873670440389, -0.0206822916876436, -0.06517625395541213, 0.10879798669234983, -0.13617948646233777, 0.10803707177512392, 0.35703917833355564, 0.11684074656416972, 0.22253638889551872, -0.3172289778123654, -0.21514320567248865, 0.27014609954009455, 0.08693607560625034, 0.032421607399425866, -0.03612206631528568, -0.2768237217817278, 0.13727256926220088, -0.1947930656329152, -0.05363612475671938, -0.043309328223889075, 0.09544347585844142, -0.017532256054913715, -0.25331344405588296, -0.007922331142860154, 0.19564558604976073, 0.036067618134741984, -0.03438740098638283, -0.06279058243325424, -0.06257833653805955, 0.04621889907312358, -0.07485312064610687, 0.11304601126106545, 0.06806408404926992, -0.023465056895344918, -0.2093263265588099, 0.3630825820645051, 0.01343224071232336, -0.20994840996960798, 0.1603618378617934, -0.14429261762693169, -0.2944300710999717, 0.16141319517711444, 0.008068947010629234, 0.14707140176601352, -0.09655343310996181, 0.1802597154095392, -0.12976372946286574, 0.14816596408352434, 0.05972850657556029, 0.05813283815569732, 0.1099055023376076, 0.07315266265955177, 0.15539392950623074, 0.18638980694647347, 0.09693225373311656, 0.029659046852473347, -0.35782316273876597, -0.07489305134021422, -0.1494493614799077, 0.15611383214681632, -0.12200712237938119, -0.2251225347184421, 0.36745947572801796, 0.13019105014141782, 0.11202780382397275, 0.1345214010133142, 0.2417112619356582, 0.05897051846148402, 0.07203799341472664, 0.165789059424285, 0.14201157085508817, 0.2530093491077423, -0.05050726858012024, -0.06564966061462958, -0.01903807887131171, 0.1394292113753701] |
708.0246 | Severe right Ore sets and universal localisation | We introduce the notion of a severe right Ore set in the main as a tool to
study universal localisations of rings but also to provide a short proof of P.
M. Cohn's classification of homomorphisms from a ring to a division ring. We
prove that the category of finitely presented modules over a universal
localisation is equivalent to a localisation at a severe right Ore set of the
category of finitely presented modules over the original ring. This allows us
to describe the structure of finitely presented modules over the universal
localisation as modules over the original ring.
| math.RA | we introduce the notion of a severe right ore set in the main as a tool to study universal localisations of rings but also to provide a short proof of p m cohns classification of homomorphisms from a ring to a division ring we prove that the category of finitely presented modules over a universal localisation is equivalent to a localisation at a severe right ore set of the category of finitely presented modules over the original ring this allows us to describe the structure of finitely presented modules over the universal localisation as modules over the original ring | [['we', 'introduce', 'the', 'notion', 'of', 'a', 'severe', 'right', 'ore', 'set', 'in', 'the', 'main', 'as', 'a', 'tool', 'to', 'study', 'universal', 'localisations', 'of', 'rings', 'but', 'also', 'to', 'provide', 'a', 'short', 'proof', 'of', 'p', 'm', 'cohns', 'classification', 'of', 'homomorphisms', 'from', 'a', 'ring', 'to', 'a', 'division', 'ring', 'we', 'prove', 'that', 'the', 'category', 'of', 'finitely', 'presented', 'modules', 'over', 'a', 'universal', 'localisation', 'is', 'equivalent', 'to', 'a', 'localisation', 'at', 'a', 'severe', 'right', 'ore', 'set', 'of', 'the', 'category', 'of', 'finitely', 'presented', 'modules', 'over', 'the', 'original', 'ring', 'this', 'allows', 'us', 'to', 'describe', 'the', 'structure', 'of', 'finitely', 'presented', 'modules', 'over', 'the', 'universal', 'localisation', 'as', 'modules', 'over', 'the', 'original', 'ring']] | [-0.17767906466244973, -0.01716814971895832, -0.1180936539348102, 0.045625130598894274, -0.04404233918158394, -0.15255138582803987, -0.03777796375292419, 0.32629372815441604, -0.4121091900148777, -0.1619745611137889, 0.1110310189254262, -0.16996862587646577, -0.10104618001390588, 0.23945321320236257, -0.1619538924459255, -0.05373185087051807, 0.07315788373487503, 0.13743350626883152, -0.0454576771889785, -0.2695937804322727, 0.3477836100600961, 0.05342566346128782, 0.22642237821010627, 0.04267406380838818, 0.13805196651568016, 0.058841890288573326, -0.054890357484721174, 0.0060700945405647005, -0.16698332350135775, 0.15372848425135768, 0.3118660437658128, 0.08097499033972395, 0.2490742969740596, -0.3523054386893607, -0.08013798463901486, 0.17079470043700903, 0.1514640622160802, 0.044067586939123396, -0.008721231090168308, -0.2809961016355741, 0.18304818228000042, -0.27584428898990154, -0.10627755490978333, -0.026874913495372642, 0.11957637779414654, 0.027381367057166768, -0.2478347903833668, -0.03581803131906194, 0.12119245961910546, 0.103218304802372, -0.05600935942787357, -0.02554284438791901, 0.006504479050165927, 0.09190236509429535, -0.06437333827753636, -0.030031476811872737, 0.13698633439542557, -0.08955747586900764, -0.11765774455617624, 0.36990119456642806, -0.038743649016727104, -0.154526085959691, 0.212933481510992, -0.18111406390865645, -0.07922306910364164, 0.16438189704227496, 0.0662508775889309, 0.11203823271066402, -0.06957096716146823, 0.17370473089242222, -0.186760908162052, 0.10440870233331666, 0.08715951422727997, 0.05132326600847371, 0.17711900942253345, 0.15713788249478158, 0.08359891980665388, 0.15844491371565095, -0.012434232448500514, 0.009112479428600783, -0.39101947080155813, -0.18027772257725397, -0.0909821224761092, 0.11620303638064246, -0.028863272013500182, -0.19456149750116347, 0.5180542193578951, 0.14543596069996406, 0.19977191112690953, 0.12237927430506909, 0.23512895556750021, -0.005150281335873943, 0.1329972298352537, -0.01649421092706046, 0.08244831747177875, 0.20182692164536378, -0.0005456064639594218, -0.09805483509541837, -0.03019939333840151, 0.1624868904861311] |
708.0247 | Dark Matter Decaying Now | The instability of dark matter may produce visible signals in the spectrum of
cosmic gamma-rays. We consider this possibility in frameworks with additional
spatial dimensions and supersymmetry. Examples of particles include
superweakly-interacting massive particles such as gravitinos in supersymmetry
models, the lightest Kaluza-Klein (KK) state in models with universal extra
dimensions, and weakly-interacting massive particles such as branons in
flexible brane-worlds.
| astro-ph hep-ph | the instability of dark matter may produce visible signals in the spectrum of cosmic gammarays we consider this possibility in frameworks with additional spatial dimensions and supersymmetry examples of particles include superweaklyinteracting massive particles such as gravitinos in supersymmetry models the lightest kaluzaklein kk state in models with universal extra dimensions and weaklyinteracting massive particles such as branons in flexible braneworlds | [['the', 'instability', 'of', 'dark', 'matter', 'may', 'produce', 'visible', 'signals', 'in', 'the', 'spectrum', 'of', 'cosmic', 'gammarays', 'we', 'consider', 'this', 'possibility', 'in', 'frameworks', 'with', 'additional', 'spatial', 'dimensions', 'and', 'supersymmetry', 'examples', 'of', 'particles', 'include', 'superweaklyinteracting', 'massive', 'particles', 'such', 'as', 'gravitinos', 'in', 'supersymmetry', 'models', 'the', 'lightest', 'kaluzaklein', 'kk', 'state', 'in', 'models', 'with', 'universal', 'extra', 'dimensions', 'and', 'weaklyinteracting', 'massive', 'particles', 'such', 'as', 'branons', 'in', 'flexible', 'braneworlds']] | [-0.11840399913489819, 0.3223068244289607, -0.029790912258128324, 0.19680661551925974, -0.05323196823398272, -0.17647212535763782, -0.07361175348050893, 0.2979219723997327, -0.1589490698184818, -0.3501919482524196, 0.022058364677165324, -0.2824669486416193, -0.04937361621608337, 0.0656338486665239, -0.002021943622579177, 0.04149684678122867, 0.019763432541124833, 0.015619010097968082, 0.04318591922832032, -0.23899227253859862, 0.3187297596363351, 0.049630147812422365, 0.17853963238497575, 0.014738551923073828, 0.0811659731902182, -0.02791998686734587, -0.012424114796643456, -0.09586019146566589, -0.12989780882295843, 0.059214952242715904, 0.21587659325996356, 0.09443659431417473, 0.07732952676014974, -0.45028274891277154, -0.3156600712177654, 0.18940646306922038, 0.27447158182039855, 0.1393471959978342, -0.10471826440965136, -0.3126496331533417, 0.05126745760207996, -0.2265257571513454, -0.16227485039271414, -0.05716742960309299, -0.0437882539195319, -0.1060203356668353, -0.2470658266140769, 0.15608317921869458, 0.009204630317011226, -0.031987241577977936, -0.07406151415780186, -0.08797606367152185, -0.06266285474412144, -0.05762572505821784, 0.20383973112911918, -0.10584804951989403, 0.17043198080888639, -0.23697957057738678, -0.17482525339194885, 0.4088923448075851, -0.11107499878853559, -0.21247867587953806, 0.28050577621906997, -0.12407029279662916, -0.19502145530035098, 0.15177409059057634, 0.21778101326199248, 0.10769626526162028, -0.10588499262618521, 0.21755742795260932, -0.00023059422771135965, 0.171672370552551, 0.09700461997029682, 0.15532620027661323, 0.38452920466661455, 0.18722944556114574, 0.023294640332460405, 0.12126076817512513, -0.03921101826708764, -0.045897492941003294, -0.37203436200798023, -0.1786426084426542, -0.08260808337945491, 0.03458547368645668, -0.13571968306350754, -0.11119726564114292, 0.33466188233966626, 0.07492981349156859, 0.1900986154253284, -0.0005201987922191619, 0.29635385243843, 0.004137282612888763, 0.10838008246695002, 0.059247758549948536, 0.29811807063718637, 0.09242652375251055, 0.13003654406250764, -0.14335232287800562, -0.16370709172915668, 0.02307655462063849] |
708.0248 | Higgs decays in supersymmetric models with light neutralinos | In the Minimal Supersymmetric Standard Model, neutralinos lighter than 50 GeV
are compatible with all accelerator, precision, and cosmological bounds. Such
neutralinos might constitute a relevant decay channel for the Higgs boson,
modifying its expected signatures at hadron colliders. We study the branching
ratio h --> \chi\chi and determine the region in the supersymmetric parameter
space where it is sizable. We have found that, in fact, the Higgs may
dominantly decay into neutralino pairs. Besides, as a result of this new
channel, the branching ratio into visible modes, such as h --> \gamma\gamma,
gets suppressed.
| hep-ph | in the minimal supersymmetric standard model neutralinos lighter than 50 gev are compatible with all accelerator precision and cosmological bounds such neutralinos might constitute a relevant decay channel for the higgs boson modifying its expected signatures at hadron colliders we study the branching ratio h chichi and determine the region in the supersymmetric parameter space where it is sizable we have found that in fact the higgs may dominantly decay into neutralino pairs besides as a result of this new channel the branching ratio into visible modes such as h gammagamma gets suppressed | [['in', 'the', 'minimal', 'supersymmetric', 'standard', 'model', 'neutralinos', 'lighter', 'than', '50', 'gev', 'are', 'compatible', 'with', 'all', 'accelerator', 'precision', 'and', 'cosmological', 'bounds', 'such', 'neutralinos', 'might', 'constitute', 'a', 'relevant', 'decay', 'channel', 'for', 'the', 'higgs', 'boson', 'modifying', 'its', 'expected', 'signatures', 'at', 'hadron', 'colliders', 'we', 'study', 'the', 'branching', 'ratio', 'h', 'chichi', 'and', 'determine', 'the', 'region', 'in', 'the', 'supersymmetric', 'parameter', 'space', 'where', 'it', 'is', 'sizable', 'we', 'have', 'found', 'that', 'in', 'fact', 'the', 'higgs', 'may', 'dominantly', 'decay', 'into', 'neutralino', 'pairs', 'besides', 'as', 'a', 'result', 'of', 'this', 'new', 'channel', 'the', 'branching', 'ratio', 'into', 'visible', 'modes', 'such', 'as', 'h', 'gammagamma', 'gets', 'suppressed']] | [-0.07546300010039642, 0.30677779918156, -0.018721979577094316, 0.17709830948351932, -0.06465383024225312, -0.22031235625286416, 0.0195413321276666, 0.31005992933166443, -0.23127769181124305, -0.2702415736932908, 0.024751439872097665, -0.2946113121185091, 0.03166163933553522, 0.17870375409256667, 0.06415550953236669, 0.058495066238201714, 0.11926351207113194, 0.024281350189759847, -0.0065432343787203235, -0.24134025286122035, 0.23661115059568996, 0.05845926561823455, 0.16432253790328338, 0.08486291871816722, -0.005912306938841138, 0.003564519001551533, -0.02653998912622531, -0.10551862908503472, -0.17234577031054105, 0.036787806292845594, 0.18728946481821357, 0.09366075400142901, 0.11460922211308473, -0.2918263168577405, -0.1295907958811249, 0.24269997144758862, 0.23386970187927927, 0.05626497480026897, -0.04910331417716319, -0.3213981119014563, 0.13364891972331303, -0.2139559126989816, -0.05679267472637597, -0.0136239664323668, -0.034851574789612524, -0.1533187587259798, -0.3288864723897429, 0.07451889914290238, -0.04745594254865121, -0.04899420857589732, 0.026434320126539998, -0.21565113074436623, -0.10460523726238359, -0.026019934504743544, 0.14762044129317367, -0.00017908681935120013, 0.22025450235933705, -0.19152284097877803, -0.1443535359776629, 0.4226200083090413, -0.14948717262223488, -0.15979047992356843, 0.16060969996721713, -0.1918645282776686, -0.1552438629761098, 0.19181080228619038, 0.23141964809388244, 0.05962552396600605, -0.11010005956976324, 0.1877157262023238, -0.0535084731033152, 0.14864508050584024, 0.07216675723251957, 0.1310134479245271, 0.27236253005121985, 0.2139337376230747, 0.04693651185571266, 0.08153344428176762, -0.06840246240358039, -0.06361671867630174, -0.4362282877167066, -0.18284196056605828, -0.03824093509139994, 0.042163399454977324, -0.07402950382424689, -0.07922092546153092, 0.3594788478296851, 0.07216307488445353, 0.2996909932573877, 0.02211908394250498, 0.28488091213167993, 0.10393888723375576, 0.10243808111095781, 0.038351185484639096, 0.36328108783470847, 0.13837863917973253, 0.09828974275789674, -0.16829865972100888, 0.022436584070605295, 0.028461075012361812] |
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