chunk_uid
stringlengths
40
40
chunk_type
stringclasses
2 values
chunk_index
int64
0
6.71k
total_chunks
int64
1
6.71k
section_title
stringlengths
1
157
embed_text
stringlengths
1
83.3k
spans
dict
paper_doi
stringlengths
0
63
paper_id_arxiv
stringlengths
9
16
title
stringlengths
7
245
authors
listlengths
1
768
categories
listlengths
1
7
year
int64
2k
2.02k
language
stringclasses
2 values
discipline
stringclasses
8 values
dense_vector
listlengths
1.02k
1.02k
599de1455628b2be733c0b65d651a1f89691b829
subsection
23
41
On bracket polynomials
The coordinate function \psi : G \rightarrow \mathbb {R}^3 is then given by the formula\psi \left(\left(\begin{} 1 & x & z \\ 0 & 1 & y \\ 0 & 0 & 1\end{}\right)\right) = (x,y,z - xy),and the element written here is equivalent, under right multiplication by an element of \Gamma , to the element with coordinates(\lbrace...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1618, "openalex_id": "", "raw": ", The quantitative behaviour of polynomial orbits on nilmanifolds, to appear in Annals of Math.", "source_ref_id": "ef169c63835fd3886cd4f56c6161e8fb197283bf", "start": 1227 } ] }
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.014832929708063602, 0.027880415320396423, -0.040561653673648834, -0.03531213849782944, 0.029467478394508362, -0.08338182419538498, 0.038486264646053314, 0.000019790591977653094, -0.013665523380041122, 0.03531213849782944, -0.024172183126211166, 0.023012405261397362, -0.015420448035001755,...
69e172349906403fabb8f22ff9ec9440976127cc
subsection
24
41
On bracket polynomials
From Proposition (\ref {equi-prop}) we have \mathbb {E}_{n \in [N]} \mu (n) F_1(g(n)\Gamma ) \ll N^{-c}, and the uniform distribution of (g(n))n [N] implies that \mathbb {E}_{n \in [N]} F_2(g(n)\Gamma ) \leqslant \varepsilon + O(\varepsilon ^{-O(1)}N^{-c}). Now we have the bounds \begin{align*} |\mathbb {E}_{n \in [N...
{ "cite_spans": [] }
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.040810476988554, 0.012774258852005005, -0.021900910884141922, -0.0489603616297245, 0.014498860575258732, -0.04377129673957825, -0.02426651306450367, 0.029699770733714104, 0.0064748856239020824, 0.042275626212358475, -0.06248245760798454, 0.006238325498998165, -0.03217220678925514, 0.003...
aae4f16bfa3a94afc95c3c036c17dd0747d165fc
subsection
25
41
On bracket polynomials
This may be used to “explain” the observation that n\sqrt{2}\lfloor n\sqrt{2}\rfloor is not uniformly distributed modulo one; see for further details.Inside G/\Gamma , G^{\prime }/\Gamma ^{\prime } may be identified with the union of two segments\lbrace \left(\begin{} 1 & x & x^2/2 \\ 0 & 1 & x \\ 0 & 0 & 1\end{}\right...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1649, "openalex_id": "", "raw": ", The quantitative behaviour of polynomial orbits on nilmanifolds, to appear in Annals of Math.", "source_ref_id": "ef169c63835fd3886cd4f56c6161e8fb197283bf", "start": 1581 }, {...
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.054489754140377045, 0.03441458195447922, -0.02370578795671463, -0.03478069230914116, 0.02471259795129299, -0.049272648990154266, -0.0071430085226893425, -0.009801138192415237, 0.016093697398900986, 0.049516722559928894, -0.03801468759775162, 0.021234529092907906, -0.022927800193428993, ...
9e1985532652dfed4d272f01b1e9231f9e8531f5
subsection
26
41
On bracket polynomials
Suppose for simplicity that \varepsilon = \gamma = \operatorname{id}_G (this was, in fact, the case in the two examples above).Choose a Mal'cev basis for G^{\prime }/\Gamma ^{\prime } with coordinate map \psi ^{\prime } : G^{\prime } \rightarrow \mathbb {R}^{m^{\prime }}. Then G^{\prime }/\Gamma ^{\prime } may be ident...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1108, "openalex_id": "", "raw": ", The quantitative behaviour of polynomial orbits on nilmanifolds, to appear in Annals of Math.", "source_ref_id": "ef169c63835fd3886cd4f56c6161e8fb197283bf", "start": 579 }, { ...
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.022325608879327774, 0.013062694109976292, -0.03863871842622757, -0.01675565168261528, 0.04031733423471451, -0.04303364455699921, 0.030642395839095116, 0.01996028609573841, 0.01703033596277237, 0.040897220373153687, -0.04159918799996376, 0.0006995828007347882, -0.046574000269174576, 0.00...
9ebabb4b1ced3185512c0e8699ec7c5da3999ed9
subsection
27
41
On bracket polynomials
One then works with the conjugated sequences \gamma _j^{-1}g^{\prime }(n)\gamma _j as we did at the end of §.We conclude by remarking on some variants and generalizations of Theorem REF . If p_1,\dots ,p_M are bracket polynomials and F : (\mathbb {R}/\mathbb {Z})^M \rightarrow is a smooth function then one could establ...
{ "cite_spans": [] }
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.020845569670200348, 0.011117128655314445, -0.021715406328439713, -0.027727965265512466, -0.001860802760347724, -0.024614863097667694, 0.015229779295623302, 0.026812346652150154, -0.002748761558905244, 0.011445225216448307, -0.02641557902097702, 0.02640031836926937, -0.02962024137377739, ...
344872dde00e485003493c12915782d90b13cde2
subsection
28
41
The Liouville function
Everything we have proved for the Möbius function also holds for the Liouville function \lambda : \mathbb {N}\rightarrow \lbrace -1,1\rbrace , defined to be the unique completely multiplicative function such that \lambda (p) = -1 for all primes p. This function is related to the Möbius function via the identity\lambda ...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 921, "openalex_id": "", "raw": ", The quantitative behaviour of polynomial orbits on nilmanifolds, to appear in Annals of Math.", "source_ref_id": "ef169c63835fd3886cd4f56c6161e8fb197283bf", "start": 592 } ] }
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.030124517157673836, 0.017992302775382996, -0.02646196261048317, -0.022952014580368996, 0.0026992270722985268, -0.024554381147027016, 0.014390790835022926, 0.007309850305318832, -0.011414964683353901, 0.03317664563655853, -0.04214990884065628, -0.0011855615302920341, -0.02743864431977272, ...
eefd46ff419fdc6dd80c3ade6ceb2be9162ef502
subsection
29
41
A recurrence result along the primes
In this section we derive the following result. Here p_1,p_2,p_3,\dots is the sequence of primes.Theorem 1 (Prime return times on a nilmanifold) Suppose that G/\Gamma is a nilmanifold and that g \in G is such that left-multiplication by g is ergodic. Then for every x \in G/\Gamma the sequence (g^{p_n}x\Gamma )_{n = 1,...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 900, "openalex_id": "", "raw": ", The quantitative behaviour of polynomial orbits on nilmanifolds, to appear in Annals of Math.", "source_ref_id": "ef169c63835fd3886cd4f56c6161e8fb197283bf", "start": 546 }, { ...
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.06693542748689651, -0.003954651299864054, -0.0035961775574833155, -0.02140164189040661, 0.01328640803694725, -0.037067703902721405, 0.05747782438993454, 0.01947961188852787, 0.012622850015759468, 0.00993811059743166, -0.04072871059179306, -0.01215759664773941, -0.011699970811605453, 0.0...
2c62de70732a0f4ae25392b47261bdc4ded9a1e4
subsection
30
41
A recurrence result along the primes
The contribution from the first piece is bounded using the machinery of Gowers norms, and here one must estimate the dual Gowers norm of the nilsequence F(g^nx\Gamma ) as well as the Gowers norm of objects related to \Lambda ^{\sharp }. This is a substantial amount of work.Let us return to the proof at hand. Since (REF...
{ "cite_spans": [] }
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.04788334667682648, 0.022629383951425552, -0.017670145258307457, -0.02462833747267723, -0.011459654197096825, -0.03369229659438133, 0.01197083666920662, 0.004287833347916603, 0.025253964588046074, 0.029663870111107826, -0.027848027646541595, -0.002607414498925209, 0.004001723136752844, -...
7af04acac552b803b76cfe4a6c38c72748de51f8
subsection
31
41
A recurrence result along the primes
Doing so, we obtain\lim _{N \rightarrow \infty } \mathbb {E}_{n \in [N]}\Lambda ^{\prime }(n) F(g^n x \Gamma ) = \int _{G/\Gamma } F.An easy argument using the prime number theorem, noting that \Lambda ^{\prime }(p_n) is essentially \log N for almost all primes p_n, n \leqslant N, concludes the proof.Very straightforwa...
{ "cite_spans": [] }
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.04040953516960144, 0.004147013183683157, 0.004612455144524574, -0.053838685154914856, -0.010514413937926292, -0.07013679295778275, -0.0007530052680522203, -0.01979273557662964, 0.0021974972914904356, 0.02803335152566433, -0.03744901716709137, 0.021883411332964897, -0.03995172306895256, ...
ebe2a689403a3b7aa609bafd696f240bd2c91fa2
subsection
32
41
Möbius and periodic functions
In this appendix we give the proof of Proposition REF . The argument is, quite apart from being completely standard, already contained in . We nonetheless take the opportunity to recall it here, as we wish to emphasise the fact that the main input to this part of the argument is information on the zeros of L-functions....
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 139, "openalex_id": "", "raw": ", Quadratic uniformity of the Möbius function, Ann. Inst. Fourier (Grenoble) 58 (2008), no. 6, 1863–1935.", "source_ref_id": "eaf5275a70f96b4ecefe0970fb1a38be1cffdd68", "start": 56 }...
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.0031797164119780064, 0.004799140151590109, -0.04345930367708206, -0.002132527297362685, 0.019654348492622375, -0.021027710288763046, 0.028855878859758377, -0.0018073073588311672, 0.02449163608253002, 0.024339040741324425, -0.03329641744494438, 0.014511867426335812, 0.00001823997445171699,...
e4818d2aef314fc1d884ff3f2c8ba7d575c63b5b
subsection
33
41
Möbius and periodic functions
Applying Proposition REF and the triangle inequality, we conclude\mathbb {E}_{n \in [N]} \mu (n) \overline{f(n)} \ll _A q^{1/2} \log ^{-A} N \big (\sum _\chi |\hat{f}(\chi )|\big ).But from Cauchy-Schwarz and Plancherel we have\sum _\chi |\hat{f}(\chi )| \leqslant \phi (q)^{1/2} (\sum _\chi |\hat{f}(\chi )|^2)^{1/2} = ...
{ "cite_spans": [] }
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.021016864106059074, 0.023062078282237053, -0.029411399737000465, -0.04832199960947037, -0.00026328314561396837, 0.03020506538450718, -0.017491159960627556, 0.046307310461997986, 0.011676035821437836, 0.020665820688009262, -0.01781167834997177, -0.0012563185300678015, 0.011065524071455002,...
d55e3abb951a3f21fc03c5b119afbc6812887ef2
subsection
34
41
On total equidistribution of nilsequences
During the proof that Proposition REF implies Theorem REF (specifically, in the claim towards the end of §), we implicitly used the following technical factWe note that this fact was absent in our original posting of this paper on the ArXiV in 2008; we apologize for this oversight..Lemma 1 Suppose that G/\Gamma is an ...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1948, "openalex_id": "", "raw": ", The quantitative behaviour of polynomial orbits on nilmanifolds, to appear in Annals of Math.", "source_ref_id": "ef169c63835fd3886cd4f56c6161e8fb197283bf", "start": 1788 } ] }
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.03143787384033203, 0.030262770131230354, -0.03525315225124359, -0.04676002264022827, 0.006325727794319391, -0.04456242546439171, 0.03543628379702568, 0.013185594230890274, 0.009919717907905579, 0.024661943316459656, -0.0167566929012537, -0.029637064784765244, -0.02441776730120182, 0.021...
567c2640cddd78a6b090fb0275fb326bc2e48d9b
subsection
35
41
On total equidistribution of nilsequences
This follows from the fact that [\Gamma : \Gamma \cap \gamma ^{-1}\Gamma \gamma ] \leqslant Q^{O_{m,d}(1)}, which may in turn be proven by noting that the \mathcal {X} coordinates of every element in \gamma ^{-1}\Gamma \gamma are rationals over some fixed denominator Q^{O_{m,d}(1)}, as follows from .Lemma 2 Suppose tha...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 302, "openalex_id": "", "raw": ", The quantitative behaviour of polynomial orbits on nilmanifolds, to appear in Annals of Math.", "source_ref_id": "ef169c63835fd3886cd4f56c6161e8fb197283bf", "start": 0 }, { ...
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.0666937530040741, 0.020334577187895775, -0.04051660746335983, -0.03060102090239525, -0.00028674156055785716, -0.037801261991262436, 0.02816026285290718, -0.007573981769382954, 0.0045649828389286995, 0.01384368259459734, -0.02359909377992153, -0.036550372838974, -0.02568899281322956, 0.0...
53f41026b9545691eca09c3b006a75dced29cd7b
subsection
36
41
On total equidistribution of nilsequences
Applying the quantitative Leibman dichotomy, namely , this may be further reduced to the corresponding abelian statement. Indeed that result immediately implies that (g(n)\Gamma )_{n \in [N]} is totally \delta -equidistributed if and only if (\pi (g(n)\Gamma )_{n \in [N]} is totally \delta ^{\prime }-equidistributed in...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 121, "openalex_id": "", "raw": ", The quantitative behaviour of polynomial orbits on nilmanifolds, to appear in Annals of Math.", "source_ref_id": "ef169c63835fd3886cd4f56c6161e8fb197283bf", "start": 0 }, { ...
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.044040191918611526, 0.018739208579063416, -0.020753519609570503, -0.034121230244636536, -0.013794987462460995, -0.015320980921387672, 0.015641439706087112, 0.020906120538711548, 0.010041041299700737, 0.03747841715812683, -0.03399914875626564, 0.005031965672969818, -0.022371074184775352, ...
3427fa899d2d98c0770ec1ebf08ad4ead75e01db
subsection
37
41
On total equidistribution of nilsequences
This implies that \Vert k^{\prime } \cdot g^{\prime }\Vert _{C^{\infty }[N]} \leqslant \delta ^{\prime -O_{m,d}(1)}, where k^{\prime } :=( \det A) k A^{-1}; note that k^{\prime } \in \mathbb {Z}^m and that |k^{\prime }| \leqslant \delta ^{\prime -O_{m,d}(1)}. Recalling the definition of \Vert \cdot \Vert _{C^{\infty }[...
{ "cite_spans": [] }
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.06705821305513382, 0.020669670775532722, -0.04817330092191696, -0.07029213756322861, -0.014514532871544361, -0.01906796358525753, 0.015056063421070576, 0.002534132217988372, 0.02992907352745533, 0.015406914055347443, -0.01639844849705696, -0.02306460775434971, -0.009419573470950127, 0.0...
1b811c9f03dc5fbb7d9d25700b1230be98d95c04
subsection
38
41
On total equidistribution of nilsequences
The conjugate G^{\prime }_{\gamma } := \gamma ^{-1}G^{\prime }\gamma is a rational subgroup of G which comes together with a Mal'cev basis \mathcal {X}^{\prime }_{\gamma } for G^{\prime }_{\gamma }/\Gamma ^{\prime }_{\gamma } (where \Gamma ^{\prime }_{\gamma } := G^{\prime }_{\gamma } \cap \Gamma ), in which element is...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 820, "openalex_id": "", "raw": ", The quantitative behaviour of polynomial orbits on nilmanifolds, to appear in Annals of Math.", "source_ref_id": "ef169c63835fd3886cd4f56c6161e8fb197283bf", "start": 660 }, { ...
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.03750632330775261, 0.013275224715471268, -0.04547145962715149, -0.06170690804719925, 0.013801655732095242, -0.034881796687841415, 0.05749545618891716, 0.013031083159148693, 0.010337891057133675, 0.019439812749624252, -0.039093248546123505, -0.029663261026144028, -0.01230628602206707, 0....
2f841a3b0177869cb9f753cc79f9e5b230b63a4e
subsection
39
41
On total equidistribution of nilsequences
Then there is a Mal'cev basis \mathcal {X}_2 for G/\Gamma _2, each element of which is a \delta ^{-O_{m,d}(1)}-rational combination of the elements of \mathcal {X}_1, and such that (g(n)\Gamma _2)_{n \in [N]} is totally \delta ^{c_{m,d}}-equidistributed with respect to the metric d_{\mathcal {X}_2}.Remark. This lemma w...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 929, "openalex_id": "", "raw": ", The quantitative behaviour of polynomial orbits on nilmanifolds, to appear in Annals of Math.", "source_ref_id": "ef169c63835fd3886cd4f56c6161e8fb197283bf", "start": 854 }, { ...
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.04879235476255417, 0.03231463581323624, -0.04629018157720566, -0.01160306017845869, 0.00034924561623483896, -0.025509949773550034, 0.019971605390310287, 0.0050386725924909115, 0.019986862316727638, 0.028469836339354515, -0.038600582629442215, -0.014868088997900486, -0.026410121470689774, ...
dbfe5064a93367d93d12908725a20d46401ab1d4
subsection
40
41
On total equidistribution of nilsequences
We have reduced matters, then, to the following assertion.Lemma 3 Let m \geqslant 1 be a positive integer and suppose that A \in \operatorname{GL}_m(\mathbb {Z}) is invertible and has entries bounded by \frac{1}{\delta }. Let g : \mathbb {Z}\rightarrow \mathbb {R}^m be a polynomial of degree d, and write g^{\prime } :=...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 734, "openalex_id": "", "raw": ", The quantitative behaviour of polynomial orbits on nilmanifolds, to appear in Annals of Math.", "source_ref_id": "ef169c63835fd3886cd4f56c6161e8fb197283bf", "start": 648 } ] }
10.1103/PhysRevA.79.035801
0807.1736
The Mobius function is strongly orthogonal to nilsequences
[ "Ben Green", "Terence Tao" ]
[ "math.NT" ]
2,008
en
Mathematics
[ -0.06703003495931625, 0.022862248122692108, -0.02766972966492176, -0.044289879500865936, -0.007134913466870785, -0.015689179301261902, 0.008317707106471062, 0.004048204980790615, 0.03290454298257828, 0.021351324394345284, -0.029226437211036682, 0.00018934228864964098, -0.004796035587787628, ...
3996081ab7515bcb776527a47ad0cb988c0c582d
abstract
0
8
Abstract
We consider zero temperature solutions to the Abelian Higgs model coupled to gravity with a negative cosmological constant. With appropriate choices of parameters, the geometry contains two copies of anti-de Sitter space, one describing conformal invariance in the ultraviolet, and one in the infrared. The effective spe...
{ "cite_spans": [] }
10.1103/PhysRevLett.102.061601
0807.1737
The gravity dual to a quantum critical point with spontaneous symmetry breaking
[ "Steven S. Gubser", "Fabio D. Rocha" ]
[ "hep-th" ]
2,008
en
Physics
[ -0.09699177742004395, -0.02954312227666378, -0.02270669676363468, 0.02720835991203785, -0.01941056363284588, -0.0645187571644783, 0.006260364316403866, -0.01831185258924961, 0.042941294610500336, 0.03698994219303131, -0.038912687450647354, 0.022294679656624794, 0.01973102055490017, -0.0157...
1351096911f8db773d63c928f2ed6b7f0f110e8d
subsection
1
8
Body
PUPT-2275The gravity dual to a quantum critical point with spontaneous symmetry breakingSteven S. Gubserssgubser@Princeton.EDU Fábio D. Rochafrocha@Princeton.EDU Joseph Henry Laboratories, Princeton University, Princeton, NJ 08544We consider zero temperature solutions to the Abelian Higgs model coupled to gravity with ...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1021, "openalex_id": "", "raw": "C. P. Herzog, P. Kovtun, S. Sachdev, and D. T. Son, Phys. Rev. D75, 085020 (2007), hep-th/0701036.", "source_ref_id": "5a39ea0558133ec51df714c408482ee0e8069ec7", "start": 858 }, ...
10.1103/PhysRevLett.102.061601
0807.1737
The gravity dual to a quantum critical point with spontaneous symmetry breaking
[ "Steven S. Gubser", "Fabio D. Rocha" ]
[ "hep-th" ]
2,008
en
Physics
[ -0.11573416739702225, 0.00849999114871025, -0.0062567261047661304, 0.007061707321554422, -0.00663441838696599, -0.023500872775912285, -0.001401086919941008, 0.00009418471017852426, 0.017824038863182068, 0.04211844876408577, -0.031314149498939514, 0.024034984409809113, -0.013345138169825077, ...
715f4600bea286d4a64031e75723cf8861485128
subsection
2
8
Body
(This region is generally understood to correspond to infrared physics in a gravity dual.) In order for SO(3,2) conformal symmetry to emerge, one must also have A approach a linear function of r in the infrared region, so that the geometry is asymptotically AdS_4. Similar remarks apply in the ultraviolet region, where ...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1803, "openalex_id": "", "raw": "S. S. Gubser (2008), arXiv:0801.2977 [hep-th].", "source_ref_id": "43783a4bb7939193d85a6eec01838493d55628e3", "start": 1578 } ] }
10.1103/PhysRevLett.102.061601
0807.1737
The gravity dual to a quantum critical point with spontaneous symmetry breaking
[ "Steven S. Gubser", "Fabio D. Rocha" ]
[ "hep-th" ]
2,008
en
Physics
[ -0.07990490645170212, 0.023654049262404442, -0.014634989202022552, 0.029651496559381485, -0.003261969890445471, -0.030307704582810402, -0.0023711277171969414, -0.01742769405245781, 0.02504277229309082, 0.04346241056919098, 0.017671864479780197, 0.030384007841348648, 0.017748167738318443, 0...
62a5d3e736d836903bbe5f974ac88fe538cf7e21
subsection
3
8
Body
The scalar provides such a deformation: if we assume that \psi is real everywhere, then psiSet (r) = IR + ae(IR-3)r/LIR solves the linearized equation of motion for \psi around the background dsIR, where \Delta _{\rm IR} is the larger root of DeltaIR IR (IR - 3) = 1 2 V”(IR) LIR2 and a_\psi is an undetermined coeffic...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 2589, "openalex_id": "", "raw": "D. Z. Freedman, S. S. Gubser, K. Pilch, and N. P. Warner, Adv. Theor. Math. Phys. 3, 363 (1999), hep-th/9904017.", "source_ref_id": "5ecd2c8db508303dc0a8e5e0d7bd9d66f90c35e7", "start": ...
10.1103/PhysRevLett.102.061601
0807.1737
The gravity dual to a quantum critical point with spontaneous symmetry breaking
[ "Steven S. Gubser", "Fabio D. Rocha" ]
[ "hep-th" ]
2,008
en
Physics
[ -0.06477373838424683, 0.02460303157567978, -0.03089115023612976, -0.007280177436769009, -0.006162204314023256, 0.008814050815999508, -0.011202620342373848, -0.010897371917963028, 0.047099847346544266, 0.02866283617913723, -0.023519398644566536, 0.031043775379657745, -0.004338344559073448, ...
04773033f4a87340c9712ec9cb88cf6604d5447c
subsection
4
8
Body
We can formally solve heom in terms of s(r): FoundH h(r) = 1 + -r dr1   e-3A(r1) -r1 dr2   e3A(r2) s(r2)  . There are no free integration constants in FoundH because we assume h \rightarrow 1 in the infrared, which implies e^{3A(r)} h^{\prime }(r) \rightarrow 0 there as well. We learn from FoundH that h(r), and hence ...
{ "cite_spans": [] }
10.1103/PhysRevLett.102.061601
0807.1737
The gravity dual to a quantum critical point with spontaneous symmetry breaking
[ "Steven S. Gubser", "Fabio D. Rocha" ]
[ "hep-th" ]
2,008
en
Physics
[ 0.00229959050193429, -0.01321787852793932, -0.03487140312790871, -0.002539846347644925, -0.006753855384886265, -0.02338489145040512, 0.031225617974996567, 0.010838203132152557, 0.03018832392990589, 0.03590869903564453, -0.031790029257535934, 0.02667982690036297, 0.014514496549963951, 0.023...
e1772c5d2647b8375a4d0273130fcd712179ce4d
subsection
5
8
Body
If there is a stable solution, it represents a quantum critical point.To give an explicit example, we used the potential ChooseV and made the following choice of parameters: ChooseParams L = 1       q = 2       m2 = -2       u = 3       0 = 1  . A simple shooting algorithm suffices to find a solution satisfying both t...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1303, "openalex_id": "", "raw": "S. A. Hartnoll, C. P. Herzog, and G. T. Horowitz (2008), 0803.3295.", "source_ref_id": "231e15e9e142093b1a57918b68647b330716a836", "start": 1025 } ] }
10.1103/PhysRevLett.102.061601
0807.1737
The gravity dual to a quantum critical point with spontaneous symmetry breaking
[ "Steven S. Gubser", "Fabio D. Rocha" ]
[ "hep-th" ]
2,008
en
Physics
[ -0.04780704900622368, -0.02234758250415325, -0.014994999393820763, -0.005647913087159395, -0.007245803251862526, 0.01563568040728569, 0.016261108219623566, 0.017847558483481407, 0.019586550071835518, 0.06358002126216888, 0.00012751659960485995, 0.0055792685598134995, 0.007081819232553244, ...
73afd64908afc47a866c89ef822530cda48f67a9
subsection
6
8
Body
First, \Im \tilde{\sigma }\sim 1/\omega , because this is what Kramers-Kronig requires based on the existence of a delta function in \Re \tilde{\sigma } at \omega =0 Our first technical assumption is that the continuous part of \Re \tilde{\sigma } is integrable at \omega =0. This can be checked a posteriori.. In other ...
{ "cite_spans": [] }
10.1103/PhysRevLett.102.061601
0807.1737
The gravity dual to a quantum critical point with spontaneous symmetry breaking
[ "Steven S. Gubser", "Fabio D. Rocha" ]
[ "hep-th" ]
2,008
en
Physics
[ -0.04955587536096573, 0.0062669566832482815, -0.012297424487769604, 0.020582165569067, 0.010184281505644321, -0.01878179796040058, 0.004123298916965723, 0.021756982430815697, 0.01641690917313099, 0.047633446753025055, 0.004519990179687738, 0.003598827635869384, -0.02854650281369686, 0.0182...
e6da681fce8dba3c88ec1cc38f0e858961e38341
subsection
7
8
Body
So we conclude axZeroScaling ax(0) = r ax(r) -+1/2  , where the constant of proportionality involves \lim _{r\rightarrow \infty } Z_x(r), which encodes all the physics at high scales that we can access only through numerical methods. Plugging axZeroScaling into ReSigma, one obtains \Re \tilde{\sigma }\sim \omega ^\del...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 834, "openalex_id": "", "raw": "C. P. Herzog, P. Kovtun, S. Sachdev, and D. T. Son, Phys. Rev. D75, 085020 (2007), hep-th/0701036.", "source_ref_id": "5a39ea0558133ec51df714c408482ee0e8069ec7", "start": 653 } ] }
10.1103/PhysRevLett.102.061601
0807.1737
The gravity dual to a quantum critical point with spontaneous symmetry breaking
[ "Steven S. Gubser", "Fabio D. Rocha" ]
[ "hep-th" ]
2,008
en
Physics
[ -0.0743989497423172, 0.010123810730874538, -0.03198117017745972, 0.004936025477945805, 0.018218282610177994, 0.009788130410015583, 0.04202106222510338, 0.004771999549120665, 0.033781636506319046, 0.03101990558207035, -0.010123810730874538, 0.0022772853262722492, 0.009818647056818008, -0.00...
79c682d415a7c226579ba8596356f886a6f92a99
abstract
0
34
Abstract
We consider resonant absorption in a spectral line in the outflowing plasma within several tens of Schwarzschild radii from a compact object. We take into account both Doppler and gravitational shifting effects and re-formulate the theory of P-Cygni profiles in these new circumstances. It is found that a spectral line ...
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.046378739178180695, -0.023204626515507698, -0.02634739689528942, -0.014348423108458519, -0.0056867352686822414, -0.048941776156425476, -0.006422845181077719, 0.013982274569571018, 0.03634018450975418, 0.029078250750899315, -0.008505311794579029, 0.019085461273789406, -0.001707736984826624...
9bf9241c21fd5dbf3e2df4bd2e379b6bfb8173c2
subsection
1
34
Introduction
It is widely accepted that radiation produced in the vicinity of compact objects can bear an imprint of the strong gravitational field, of either a stellar mass black hole (BH) or a neutron star (NS) in Galactic X-ray binary systems, or of a super-massive BH in case of active galactic nuclei (AGN). Thus the problem of ...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 887, "openalex_id": "", "raw": "Fabian, A.C., Iwasawa, K., Reynolds, C.S., Yong, A.J. ApJ, 112, 1145", "source_ref_id": "46aeec3453d55702af6562323065140654d254ba", "start": 739 }, { "arxiv_id": "", ...
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.03331655636429787, 0.011341968551278114, -0.04219486936926842, 0.006475676782429218, 0.01344713568687439, -0.06266685575246811, -0.05381905287504196, 0.04240843653678894, 0.04127958044409752, 0.021722882986068726, -0.00399295287206769, -0.023522954434156418, -0.00967156421393156, 0.0302...
51259b692b27c8c991a34a881527e9ce403c05a1
subsection
2
34
Introduction
The data suggest these features are formed in a flow moving with velocity, v\sim 0.15-0.2\,c, or/and being gravitationally red-shifted.Much smaller astrophysical objects which may potentially demonstrate gravitationally red-shifted lines are neutron stars. It is widely believed that X-ray bursts are produced as neutron...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 790, "openalex_id": "", "raw": "Cottam, J., Paerels, F., Mendez, M. 2002, Nature, 420, 51", "source_ref_id": "31a17b61c3665d220538475794378b0ead04d631", "start": 403 }, { "arxiv_id": "", "doi": "", ...
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.08294425904750824, 0.007583387661725283, -0.03286643326282501, 0.022017763927578926, -0.002719796495512128, -0.03729134798049927, -0.03478898108005524, 0.038542527705430984, 0.04867405816912651, 0.01147426012903452, -0.02709878608584404, -0.010070494376122952, 0.005977449007332325, 0.00...
fd3dcdabb684566d9335de1fba767f21d2a64891
subsection
3
34
Introduction
Expecting that the gravitational red-shifting may introduce some characteristic distortion to the P-Cygni profile, we wish to investigate what kind of the distortion is made and whether it can be used to deduce information about the wind and compact object system itself.The plan of the paper is as follows: in Sect.2 ba...
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.0925462394952774, -0.01349123939871788, -0.022175079211592674, -0.006200017873197794, 0.01892436295747757, -0.05106525495648384, -0.010736523196101189, 0.018039191141724586, 0.03678041324019432, 0.03665832057595253, -0.021198337897658348, 0.011957449838519096, 0.016894571483135223, -0.0...
c63ce32f6a5dc03db8412a3dae0d85a91a86a697
subsection
4
34
Assumptions
As mentioned above, the problem we address in this paper may be relevant to various astrophysical objects. Physical conditions in the wind driven from the accretion disk in AGN are different from those in the out-flowing plasma during an X-ray burst. At the same time we would like to elucidate some new features which m...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1549, "openalex_id": "", "raw": "Blandford, R. D., Payne, D. G. 1982 MNRAS, 199, 883", "source_ref_id": "e6025c46772efef72db60951559d9aff9699f89c", "start": 1412 }, { "arxiv_id": "", "doi": "", ...
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.03426584601402283, -0.021587787196040154, -0.055624786764383316, -0.007033194415271282, -0.014714784920215607, -0.020733429118990898, -0.02476111613214016, -0.0032171905040740967, 0.056204527616500854, 0.028483673930168152, -0.022487914189696312, -0.010923572815954685, -0.0163395907729864...
1985ce6d6e8c72561c8cf0228111afb32424c9ab
subsection
5
34
Assumptions
Taking into account bending of photon trajectories would introduce a significant complication in the solution the radiation transfer problem and would require frequency dependent Monte-Carlo simulations of the radiation transfer in the frame of the General Relativity (GR for short), which is beyond the scope of the cur...
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.06143970042467117, 0.0025943240616470575, -0.02226540446281433, -0.008118708617985249, -0.006398061290383339, -0.0016596043715253472, -0.009583738632500172, 0.015016558580100536, 0.012193323113024235, -0.01886226236820221, -0.028262872248888016, -0.0324137918651104, -0.0004571065655909478...
9cc1f9bb0f6ec981d96f7ca64f9344208c892e9f
subsection
6
34
optical depth
We associate an observer situated at infinity, O^\infty with the laboratory frame (”lab”- frame for short). The fluid is moving with the velocity v. It is most convenient to measure absorption and emission coefficients in the co-moving frames, O_{\rm com}, coinciding instantaneously with the fluid at each point along t...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1512, "openalex_id": "", "raw": "Landau, L.D., Lifshitz, E.M. 1960, The Classical Theory of Fields, New York: Pergamon", "source_ref_id": "69c00c0bd43f3dae455e00d8a39134e8225e82e6", "start": 1270 }, { "ar...
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.06568964570760727, 0.024603091180324554, -0.02455730363726616, -0.030326515436172485, 0.009249052964150906, -0.018040232360363007, -0.03382162004709244, -0.008417248725891113, 0.04597054049372673, 0.035378389060497284, -0.021184299141168594, 0.000887130678165704, -0.0006639171624556184, ...
553831e5ed23dfce0dadc47b23f7f941ecb83088
subsection
7
34
optical depth
In order to allow for moderately high terminal velocities we will write all equations out to the second order, i.e. retain terms \beta , \beta ^2, and \phi /c^2.
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.023667069151997566, 0.01543471310287714, -0.006096063181757927, 0.004985954146832228, -0.009498871862888336, -0.0030308649875223637, -0.000812554091680795, 0.031144091859459877, 0.025162473320961, 0.006996357813477516, -0.034638457000255585, 0.0015278306091204286, 0.013451012782752514, ...
49122adf5e48292e0bda665df0f2fff77183fac0
subsection
8
34
optical depth
Taking into account that \nu _{\rm loc}(s_0)\sqrt{g_{00}(s_0)}=\nu ^\infty , where \nu ^\infty is the frequency measured by the observer O^\infty , we obtain:\tilde{\nu }(s)=\nu ^\infty \left(1-\mu (s)\beta (s)-\frac{\phi (s)}{c^2}+ \frac{\beta (s)^2}{2}\right)\mbox{.}The probability to emit a photon within a frequency...
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.052916787564754486, -0.026458393782377243, -0.030410367995500565, 0.015342511236667633, 0.02935752458870411, -0.018905391916632652, -0.026656754314899445, 0.030837608501315117, 0.04962093010544777, 0.0373835414648056, -0.028075803071260452, 0.0034675144124776125, 0.012267905287444592, 0...
47c09b25d8bf49443f535dbc354fcdb1002f8687
subsection
9
34
optical depth
Given the Sobolev approximation we assume that a photon, after being scattered in a line at a point s_0, can further interact with matter only in the immediate vicinity of this point. Due to gradients of the velocity and gravitational potential, such a photon is quickly shifted out of the resonance with the line. We ex...
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.029448630288243294, 0.02233823575079441, -0.025527233257889748, -0.01638747565448284, 0.008964285254478455, 0.01206936128437519, 0.003456018166616559, 0.02323848009109497, 0.05746297538280487, 0.02816692925989628, -0.01537279598414898, -0.0025996428448706865, -0.01113097183406353, 0.011...
dd61dae1619bd1e9aa13386af1c8d4782cc7c0cf
subsection
10
34
optical depth
The second factor in (REF ), \zeta (\tilde{\nu }) reads:\zeta (\tilde{\nu })=\int _{\nu _0-1/2}^{\tilde{\nu }} \,\Psi (\tilde{\nu }-\nu _0)\,d\tilde{\nu }\mbox{.}For simplicity we assume that the line absorption coefficient is zero outside the frequency interval (\nu _0-\Delta \nu /2,\nu _0+\Delta \nu /2) i.e. in terms...
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.05129415541887283, 0.023480577394366264, -0.028301801532506943, -0.013998330570757389, 0.005061521660536528, 0.007872630842030048, 0.03316879644989967, 0.023434806615114212, 0.055291496217250824, 0.03835618868470192, -0.019544262439012527, -0.004504639655351639, -0.02634890004992485, -0...
79c1e04c9138b3961a467138d42bfe4fdd6abf78
subsection
11
34
optical depth
\\ &+&\left.\mu \left( \frac{1}{\beta \,c^2} \frac{d\phi }{d \ln r} -\beta \frac{d\ln \beta }{d\ln r} \right) \right] \mbox{.}Similarly, after some algebra we find:-({\nu ^\infty })^{-1}\frac{d^2 \tilde{\nu }}{d s^2}&=& \left[ \frac{1-\mu ^2}{r}\left( \frac{2\mu \beta }{r}+\beta ^{\prime }(\beta -2\mu )-\frac{\phi ^{\p...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1762, "openalex_id": "", "raw": "Jeffery, D.J. 1995, ApJ, 440, 810J", "source_ref_id": "6f213f2217185747b0022ebf00422309e5e8efc5", "start": 1650 } ] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.0707261860370636, 0.0021777746733278036, -0.03350187838077545, -0.003173219971358776, -0.024729756638407707, 0.006731650326400995, 0.01958853006362915, 0.027765674516558647, 0.042746931314468384, 0.015027026645839214, -0.026865577325224876, -0.009527287445962429, 0.007948305457830429, 0...
e8a432ae3443cd347a4ff7c94d0208578515ee90
subsection
12
34
optical depth
A wind moves radially with the velocity V(r).Corresponding projections of the radial velocityon the direction of the ray at points s_0 and s determine the relative Doppler shifting.For certain cases the latter can compensate for the gravitational shifting between these two points (see e.g. the discussion before and aft...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1888, "openalex_id": "", "raw": "Kuan, P., Kuhi, L.V. 1975, ApJ, 199, 148", "source_ref_id": "74a640ec30e6ede655e0ff25ed71604fc5452a4a", "start": 1754 }, { "arxiv_id": "", "doi": "", "end": 18...
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.08063849806785583, 0.013154879212379456, -0.02507362700998783, -0.0019953602459281683, -0.041082292795181274, 0.030521761626005173, -0.018969275057315826, 0.022830277681350708, 0.03873211517930031, 0.005879254546016455, -0.04157064110040665, 0.004280677065253258, -0.02139575593173504, 0...
18a21a5cac5bd775cc92db25571f3e6382510399
subsection
13
34
Surfaces of equal frequency
It is convenient to introduce a non - dimensional frequency variable which measures a displacement of the frequency from that of the line center in terms of Doppler line width, \Delta \nu :y= (\nu -\nu _0)/\Delta \nu \mbox{.}Similarly, a co-moving version of this variable reads: {\displaystyle \tilde{y}= (\tilde{\nu }-...
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.0811653658747673, 0.004241348244249821, -0.03225255385041237, -0.018857218325138092, 0.017728226259350777, 0.059317849576473236, 0.00829961709678173, 0.01511170994490385, 0.07353704422712326, 0.044274792075157166, -0.008825970813632011, 0.02573796547949314, 0.0029006702825427055, 0.0058...
2a86380ca77ac6ec9fb149c4b8cab0c568e0e686
subsection
14
34
Surfaces of equal frequency
A non-dimensional parameter, g_0= R^*/r_g determines the relative importance of gravitational red-shifting (i.e. by equating g_0\rightarrow \infty one completely neglects the influence of the gravitational field on the energy of a photon). Equation  (REF ) may have multiple roots, z_{0i} depending on the values of y^\i...
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.0845751166343689, 0.004534623585641384, -0.006750449072569609, -0.0028813357930630445, 0.004435464274138212, 0.009900658391416073, 0.004862611647695303, 0.01080834586173296, 0.04060947895050049, -0.016429906710982323, -0.03987722843885422, 0.0088861845433712, -0.013027985580265522, -0.0...
3a1c710f59514368842877237a3e3be718f4a12b
subsection
15
34
Surfaces of equal frequency
For a given y^\infty , the EFS has the shape of a sphere of radius, x(y^\infty )=g_0^{-1}(1-\zeta /(2y^\infty )). {v}={\rm const}. An example would be the outer part of a stellar wind in which the flow is approaching terminal velocity moves at almost constant speed. Alternatively, considering a spectrum from a thin, m...
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.07856757193803787, 0.00039704437949694693, -0.013804267160594463, -0.026998063549399376, 0.004784563556313515, 0.001008230377919972, -0.023686259984970093, 0.034979965537786484, 0.040809959173202515, 0.033606406301259995, -0.023884663358330727, 0.005227154586464167, 0.002588776871562004, ...
9f27f04aaf1544506a9aaf3168f4fc1c22cb1d5d
subsection
16
34
Surfaces of equal frequency
There are two equal red-shift surfaces: an ellipsoid-like surface at small r and a plane-like at larger radii (Fig. REF , left panel). At larger red-shift, y^\infty =0.3 \,y_{\rm min} the inner surface shrinks to smaller r, where the gravitational potential is stronger, while the outer surface shifts to larger r, to th...
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.10588594526052475, 0.02833288349211216, -0.04287312924861908, -0.009528209455311298, -0.010123246349394321, 0.005820675753057003, -0.02785990573465824, 0.030072219669818878, 0.03707534074783325, 0.02270292304456234, -0.04668746516108513, 0.0034481592010706663, 0.015089510940015316, 0.00...
4bae698b0234d5ac586aab043c3f94e86c390645
subsection
17
34
Surfaces of equal frequency
A ray with impact parameter, p and frequency, y^\infty may cross resonant surfaces several times depending on the velocity law and on the relative importance of gravity, i.e. proximity to the compact object.Physical conditions (i.e. ionization balance, radiation field) which affect the formation of a particular portion...
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.023632019758224487, -0.014325671829283237, -0.011602421291172504, -0.009603844955563545, 0.0005072721978649497, -0.018093978986144066, -0.009085130877792835, -0.005557109601795673, 0.02855980582535267, 0.016720911487936974, -0.017087062820792198, 0.017071807757019997, -0.01509611494839191...
e2b92b634579d5e2252031fb5bb802c543eae515
subsection
18
34
Radiation field in a line
The mean radiation field J at any point on the Equal Frequency Surface consists of photons emitted by atoms in the immediate vicinity of this point: a local contribution, J_{\rm loc}, and a contribution from distant points, J_{\rm dist}. The latter consist of photons emitted by the core, J_{\rm core}, and photons which...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 719, "openalex_id": "", "raw": "Grachev, S.I., Grinin, V.P., 1975, Astrophysics, 11, 20", "source_ref_id": "3a241627ac013d0a2c33a41171e9b3856024089e", "start": 639 }, { "arxiv_id": "", "doi": "", ...
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.029467139393091202, -0.00988087709993124, -0.0501750148832798, -0.02630831114947796, 0.028185296803712845, -0.043491117656230927, 0.016618184745311737, 0.024019304662942886, 0.021150417625904083, 0.017640607431530952, -0.015092181041836739, 0.03131360560655594, -0.024980688467621803, 0....
4ea5d9ad8e80bd9ef84a1ce3b2d2766f5887b169
subsection
19
34
Radiation field in a line
In a general case it should be calculated separately for each point where J is calculated. The same remains true about all other possible branches of EFSs which can contribute to the mean radiation field at a given point. Generally speaking Fig. REF only shows that screening is possible. The goal of taking all these ge...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1745, "openalex_id": "", "raw": "Grachev, S.I., Grinin, V.P., 1975, Astrophysics, 11, 20", "source_ref_id": "3a241627ac013d0a2c33a41171e9b3856024089e", "start": 1580 }, { "arxiv_id": "", "doi": "", ...
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ 0.010816318914294243, 0.021891985088586807, -0.03600354492664337, -0.025416061282157898, 0.015926992520689964, -0.05974147468805313, 0.058459993451833725, -0.0045919776894152164, 0.02457699552178383, 0.03441694751381874, -0.013791188597679138, 0.0001411155826644972, -0.017788192257285118, ...
f1b02ef74d6d396070c0dbb21aaabb44e4d4655a
subsection
20
34
Radiation field in a line
The intensity of the radiation at r\rightarrow \infty at a given impact parameter p and with a given frequency y^\infty isI^\infty (y^\infty ,p)&=&I_{c}e^{-\tau (\Sigma ^{+})} +S(\Sigma ^{+})(1-e^{-\tau (\Sigma ^{+})})\\ &+& S(\Sigma ^{-}_1)(1-e^{-\tau (\Sigma ^{-}_1)}) e^{-\tau (\Sigma ^{+})}\\ &+& S(\Sigma ^{-}_2)(1-...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1584, "openalex_id": "", "raw": "Hutsemekers, D., Surdej, J. 1990, ApJ, 361, 367", "source_ref_id": "ad57cb13b866ee549bdd78a390ee73a062e4873a", "start": 1476 }, { "arxiv_id": "", "doi": "", "e...
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.04056158661842346, -0.030138876289129257, -0.005486038513481617, 0.009812302887439728, 0.024141620844602585, -0.013566309586167336, 0.02667481265962124, 0.017472919076681137, 0.04922937601804733, 0.03485427424311638, -0.02427896298468113, -0.006981537211686373, -0.01579429768025875, 0.0...
2424f96dff61d6e3e3bb22483bd20d6071fc5c55
subsection
21
34
Radiation field in a line
The penetration probability in the frame of Sobolev approximation reduces to\beta _{\rm pen}=\frac{1}{2}\int _{\mu _c}^1 \, \beta ^\mu _{\rm loc}\,d\mu \mbox{.}where \mu _c=\cos \theta _c, so that {\displaystyle \theta _c=\arccos {\sqrt{1-\frac{1}{x^2}}}} is the maximum angle at which the core is seen from the point x....
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1125, "openalex_id": "", "raw": "Hutsemekers, D., Surdej, J. 1990, ApJ, 361, 367", "source_ref_id": "ad57cb13b866ee549bdd78a390ee73a062e4873a", "start": 1060 }, { "arxiv_id": "", "doi": "", "e...
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.04771958291530609, -0.021312102675437927, -0.027139749377965927, -0.019435660913586617, 0.010800980031490326, 0.005602626595646143, 0.0042219930328428745, 0.023966580629348755, 0.042502161115407944, -0.0003532629634719342, -0.03630837798118591, -0.01276895496994257, 0.020945968106389046, ...
b9e888c5cd4d0f9606a53caf6c8c348477845ed3
subsection
22
34
Radiation field in a line
That is we ignore both negative \sim e^{-\tau } and positive  \sim S(1-e^{-\tau }) contributions which may arise from resonant points on the line to the point where J is calculated.After the intensity, I^\infty (y^\infty , p) has been calculated from (REF ), the normalized flux that is registered by the observer at inf...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 798, "openalex_id": "", "raw": "Marti, F., Noerdlinger, P. D. 1977, ApJ, 215, 247", "source_ref_id": "78d1b0f88da41a65608fdcab5fcf32c92fecf93e", "start": 719 } ] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.053065698593854904, 0.012617979198694229, -0.03405481204390526, -0.02908085659146309, -0.007628766354173422, -0.02592254802584648, 0.011458407156169415, 0.018049661070108414, 0.05651389807462692, 0.026075122877955437, -0.02822643518447876, -0.010886249132454395, 0.0007938685012049973, 0...
1e34c914059960326347cced70eebb6dcea821ab
subsection
23
34
Calculation of line profiles
Before we proceed to closer examination of line profiles we need to make several assumptions about physical conditions existing in the flow. It is assumed that a spherically-symmetric wind originates at the photosphere which emits radiation in continuum. The radius of the photosphere is R^*. The radiation emitted by th...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 767, "openalex_id": "", "raw": "Castor, J.I., Lamers, H.J.G.L.M. 1979, ApJ, 39, 481", "source_ref_id": "79891b3b9a4d97de705da3d208515bfef5ffc819", "start": 632 } ] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.07544597238302231, -0.0057912105694413185, -0.016755597665905952, -0.016206232830882072, -0.005527973640710115, 0.011452710255980492, -0.0028402875177562237, 0.030108191072940826, 0.04828297719359398, 0.03225986659526825, -0.033267032355070114, -0.03619697317481041, 0.007691093720495701, ...
2a11f92564c927651e70d745834e0eba4e040fee
subsection
24
34
Calculation of line profiles
Velocity law () with w_c=0.01.Opacity curves: solid line: equation (); dashed: equation (), k=-2;dot-dashed: equation (), k=2.Curves are marked by pairs of \alpha _1,\alpha _2 from().][Figure: Profiles for R^*=25 r_g, V^{\rm \infty }=0.01\,c (upper left),R^*=25 r_g, V^{\rm \infty }=0.2\,c (upper right),R^*=10 r_g, V^{\...
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.07454638928174973, 0.00928777176886797, -0.014080475084483624, -0.012103866785764694, -0.02950412966310978, -0.009646461345255375, 0.014599430374801159, 0.03547211363911629, 0.010745424777269363, 0.026268290355801582, -0.029214125126600266, -0.03177837282419205, 0.014469691552221775, -0...
4909ee044e75907432813456383d9afad81e591e
subsection
25
34
Body
In Sect. 3 it has been established that in the case of linear velocity law (REF ), the EFS (the red-shifted part) may have two disconnected branches if the influence of strong gravity is taken into account and provided parameter g_0 is small enough (c.f. Fig. REF ). This is easily understood from the following argument...
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.08094368875026703, 0.0045515564270317554, -0.0054252417758107185, -0.028369968757033348, -0.011552483774721622, -0.024676837027072906, -0.016207050532102585, 0.02959083952009678, 0.044012367725372314, 0.030353883281350136, -0.020403791218996048, -0.015901833772659302, 0.012201070785522461...
154b7efdcc2bc4ac3fc8bfdb820a15e380b83c7b
subsection
26
34
More realistic
First we calculate line profiles for parameters of the flow relevant to those of a wind from a normal star. These provide a good test of our results against those of  . Results are shown in Fig.REF . They are calculated for different values of T_0. The terminal velocity is V^{\infty }\simeq 1897\,{\rm km\, s^{-1}}.The ...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 168, "openalex_id": "", "raw": "Castor, J.I., Lamers, H.J.G.L.M. 1979, ApJ, 39, 481", "source_ref_id": "79891b3b9a4d97de705da3d208515bfef5ffc819", "start": 108 }, { "arxiv_id": "", "doi": "", ...
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.08758891373872757, 0.016739552840590477, -0.022873828187584877, -0.035890091210603714, -0.017578819766640663, -0.03723291680216789, -0.01655643992125988, 0.03964390233159065, 0.0489521287381649, 0.014877907000482082, -0.031495384871959686, -0.02819935604929924, 0.020630698651075363, 0.0...
1ccd3ebced0ff32505106775ce59006223b50dd8
subsection
27
34
More realistic
In most cases, the narrow absorption is superimposed on the blue-shifted emission. For k=-3 and k=-2, profiles look similar to those obtained from the linear law (c.f. Fig. REF ).
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.04625788331031799, -0.0029387944377958775, -0.04354221373796463, -0.02283906564116478, -0.027019362896680832, -0.015927845612168312, 0.02849924936890602, 0.034723926335573196, -0.004001032095402479, 0.028072066605091095, 0.003463238477706909, -0.014692065306007862, 0.028224632143974304, ...
55c6036a8e4c31ab2cd64528a3b62a0e4853b142
subsection
28
34
Shielding by the disk
Our method, as presented in this paper, does not allow to consider anisotropic radiation field of an accretion disk or some additional attenuation of the emission. However, we can gain some insight by considering a wind that is viewed face on (i.e. perpendicular to the disk plane) and accounting for the blocking of tho...
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.045625198632478714, -0.009559928439557552, -0.0035229825880378485, -0.016968300566077232, -0.02182074636220932, -0.019638672471046448, -0.01005585491657257, 0.023896006867289543, 0.06939913332462311, 0.05764949694275856, 0.005207223817706108, -0.01803644932806492, -0.0311594158411026, 0...
516543ab040d0ae5f92ce1969c0a31a0a060acfa
subsection
29
34
Discussion
The strongest double absorption profile is found for the v\sim r velocity law. The superposition of the gravitational red-shift and Doppler shift easily produces two pronounced absorption features if the velocity law is not steep (as in the case of linear law) or the maximum velocity within the line forming region is s...
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.04367994889616966, -0.017276626080274582, -0.0033977108541876078, -0.012217259965837002, -0.02437347173690796, -0.009798227809369564, -0.03925395756959915, 0.038735050708055496, 0.04908271133899689, 0.03037145361304283, -0.014331052079796791, -0.0003219335922040045, 0.009088543243706226, ...
28d2267eec6311e1c7b38b9f849440d779459926
subsection
30
34
Discussion
Results show that the centroid energy of the blue-shifted absorption depends, on the distribution of the opacity, and can be seen at significantly smaller shifts. If the gravitational red-shift effect is significant but smaller than the pure Doppler effect, there exists some maximum red-shift at which the EFS has a com...
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.02728353813290596, -0.0024414798244833946, -0.00998717825859785, -0.025055687874555588, -0.018250063061714172, -0.0564897395670414, 0.018784135580062866, 0.03305153548717499, 0.045350488275289536, 0.030137017369270325, -0.019760727882385254, 0.006817069835960865, -0.0005378885543905199, ...
aebf14d24b94461d7bf8733e6d4d83fcad7a3ed5
subsection
31
34
Conclusions
Our goal in this paper has been to study shapes of spectral lines from plasma which is rapidly moving in the vicinity of a neutron star or a black hole. The latter case can account for both stellar (Galactic Black Hole Candidates) and supper-massive BHs (AGN). In the well studied case of winds from normal hot stars, a ...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1295, "openalex_id": "", "raw": "Dorodnitsyn, A.V. 2003, MNRAS, 339, 569", "source_ref_id": "159d58c3a75232687383e772bf1bfae7306fb6ba", "start": 1114 }, { "arxiv_id": "", "doi": "", "end": 129...
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.08110304921865463, 0.014249482192099094, -0.033533576875925064, -0.005995767191052437, -0.005053684115409851, -0.04558613896369934, -0.031672295182943344, 0.010687111876904964, 0.05358049273490906, 0.025905374437570572, -0.0015647349646314979, 0.0019356562988832593, -0.005225318484008312,...
7212f5ed6926faca583956be28064e375e7d86a3
subsection
32
34
Conclusions
Some branches of the EFSs in the red-shifted part of the spectra are found to be in front of the core, meaning the possibility for the absorption component to be observed as red-shifted, with respect to the emission.From numerical calculations, which are second order accurate in v/c, it is established that a superposit...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1592, "openalex_id": "", "raw": "Castor, J.I., Lamers, H.J.G.L.M. 1979, ApJ, 39, 481", "source_ref_id": "79891b3b9a4d97de705da3d208515bfef5ffc819", "start": 1448 }, { "arxiv_id": "", "doi": "", ...
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.04741396754980087, -0.003981675021350384, -0.030099021270871162, 0.022028883919119835, -0.010388967581093311, -0.046101998537778854, -0.011792469769716263, 0.032890770584344864, 0.05156345292925835, 0.028878584504127502, -0.011289039626717567, -0.024256180971860886, 0.020381294190883636, ...
1326457bd1e1f7e5466898130bf3acfcdc55699c
subsection
33
34
Conclusions
Surprisingly enough, no W-shape profiles are found for a v\sim \sqrt{1-1/x} law. In this case the red-shifted absorption almost exactly compensates for the blue-ward emission peak, producing a sharp edge in the emission (Fig. REF ).However, in many other cases of different \alpha _1,\alpha _2, W-shape profiles are also...
{ "cite_spans": [] }
10.1142/S0218271808013364
0807.1738
Gravitationally distorted P-Cygni profiles from outflows near compact objects
[ "A. V. Dorodnitsyn" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.047800999134778976, 0.0016330481739714742, -0.017520926892757416, -0.025808265432715416, -0.021763799712061882, -0.011034521274268627, -0.005658435635268688, 0.030371643602848053, 0.04731260985136032, 0.015544481575489044, 0.003651465056464076, -0.019276073202490807, 0.020084965974092484,...
a3fd044baad68974de010d3f821d4b2380d3163b
abstract
0
6
Abstract
The instanton-antiinstnton contributions to the $q\overline{q}$ bound state pole in the four-point Green function in the Schwinger Model are calculated. It is shown that these configurations, thanks to the cancellation of all unwanted terms, are responsible for the restoration of the perfect factorizability of the resi...
{ "cite_spans": [] }
0807.1739
Restoration of the residue factorizability in the bound-state pole by instanton-antiinstanton configurations
[ "Tomasz Radozycki" ]
[ "hep-th" ]
2,008
en
Physics
[ -0.04346483573317528, -0.01024811714887619, -0.002333106240257621, -0.025975123047828674, -0.01971789449453354, -0.04273227974772453, 0.03867271542549133, 0.011140916496515274, 0.03265967220067978, 0.02454053796827793, -0.024052169173955917, 0.03815382346510887, -0.00553611945360899, 0.037...
600c7ace8f37e4ec92196c4546f38c6fd7ff2aa6
subsection
1
6
Body
Restoration of the residue factorizability in the bound-state pole by instanton-antiinstanton configurations Tomasz Radożycki Department of Mathematical Methods in Physics, Warsaw University, Hoża 74, 00-682 Warsaw, Poland torado@fuw.edu.plThe instanton-antiinstnton contributions to the q\overline{q} bound state pole i...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1213, "openalex_id": "", "raw": "K. Huang, Quarks, Leptons and Gauge Fields, World Scientific 1982.", "source_ref_id": "14b5fc538bc00213a9f4b793a95f0c54e57270ed", "start": 773 }, { "arxiv_id": "", "...
0807.1739
Restoration of the residue factorizability in the bound-state pole by instanton-antiinstanton configurations
[ "Tomasz Radozycki" ]
[ "hep-th" ]
2,008
en
Physics
[ -0.03357658535242081, -0.00010063436639029533, -0.03995613753795624, -0.007665381766855717, -0.02110746130347252, -0.04566415399312973, 0.036415331065654755, 0.03687319532036781, 0.017978735268115997, 0.054455116391181946, -0.0069785877130925655, 0.023702016100287437, -0.008378883823752403, ...
c4249644776f0fa748d702816db054c0cd1dd15e
subsection
2
6
Body
One can then make instanton-antiinstanton separation arbitrarily large.Following , we substitute into the path integral in the generating functionalthe following form of the gauge potentialwith \varepsilon ^{\mu \nu } being the antisymmetric symbol. The integration, which will be led in euclidean space, is now performe...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 250, "openalex_id": "", "raw": "C. Adam, Z. Phys. C63, 169(1994).", "source_ref_id": "44352927386f885d9dfd8c1febc85ef0a5180eef", "start": 71 }, { "arxiv_id": "", "doi": "", "end": 250, "...
0807.1739
Restoration of the residue factorizability in the bound-state pole by instanton-antiinstanton configurations
[ "Tomasz Radozycki" ]
[ "hep-th" ]
2,008
en
Physics
[ -0.029088839888572693, 0.012323839589953423, -0.02167164348065853, 0.011438659392297268, -0.014727560803294182, -0.024800296872854233, 0.0271048154681921, 0.020343873649835587, 0.04966164007782936, 0.038764771074056625, -0.012262792326509953, -0.0003867892373818904, 0.04196973145008087, 0....
fa80a03257dd9e85c84c5f4939d279910790b74c
subsection
3
6
Body
Obviously, for finite R they are not exact.They are eigenfunctions (with eigenvalues \pm 1) of the chirality operator \gamma ^5 (our conventions as to the \gamma matrices are given in ).Now our previous calculation can be applied with only obvious modifications and with the additional difference that our formulae will ...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 187, "openalex_id": "", "raw": "T. Radożycki, Phys. Rev. D60, 105027(1999).", "source_ref_id": "161b3de9b7bf227da3e3876571ba6227c35d2c15", "start": 43 }, { "arxiv_id": "", "doi": "", "end": 99...
0807.1739
Restoration of the residue factorizability in the bound-state pole by instanton-antiinstanton configurations
[ "Tomasz Radozycki" ]
[ "hep-th" ]
2,008
en
Physics
[ -0.056111786514520645, 0.0084594851359725, -0.037041712552309036, -0.004222114570438862, 0.0035374986473470926, -0.02044311910867691, 0.013966922648251057, 0.002093894174322486, 0.024989424273371696, 0.029962901026010513, -0.06020040810108185, -0.003066467819735408, 0.01774279773235321, 0....
741e6b300311ca1ac3dd95e31d6c24b0714a6b52
subsection
4
6
Body
Because we are interested in the t-channel singularity, the pole corresponding to the bound state should be found in the complex plane of P^2, where P is the two-momentum canonically conjugated to Z. The Z dependence of the expression is then crucial.Let us begin with the first term in the square brackets in (REF ). It...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 830, "openalex_id": "", "raw": "T. Radożycki, Phys. Rev. D75, 085005(2007).", "source_ref_id": "1b12ad4e23a5344957601e4325560d635e385d93", "start": 733 }, { "arxiv_id": "", "doi": "", "end": 2...
0807.1739
Restoration of the residue factorizability in the bound-state pole by instanton-antiinstanton configurations
[ "Tomasz Radozycki" ]
[ "hep-th" ]
2,008
en
Physics
[ -0.0055787088349461555, 0.012554002925753593, -0.03797490522265434, 0.02258957363665104, -0.00845582690089941, 0.0175069198012352, 0.015102961100637913, 0.052780233323574066, 0.0065212128683924675, 0.006887530442327261, -0.03828016668558121, -0.021627990528941154, 0.010226360522210598, 0.0...
63e39754da93b9cca9a1599f62e1c69f77f1232d
subsection
5
6
Body
The straightforward calculation leads to the similar result as above only with the modification in the \gamma matrices structure, which actually might be predicted. The two modes (REF ) and () exchange their roles, so the matrical structure is changed into (+\gamma ^5)\otimes (-\gamma ^5) and the rest of the expression...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 644, "openalex_id": "", "raw": "T. Radożycki, Phys. Rev. D75, 085005(2007).", "source_ref_id": "1b12ad4e23a5344957601e4325560d635e385d93", "start": 348 } ] }
0807.1739
Restoration of the residue factorizability in the bound-state pole by instanton-antiinstanton configurations
[ "Tomasz Radozycki" ]
[ "hep-th" ]
2,008
en
Physics
[ -0.07731463760137558, -0.012890858575701714, -0.0127459317445755, -0.022196685895323753, 0.009694840759038925, -0.0432034432888031, -0.0041990638710558414, 0.07517887651920319, 0.04909205064177513, 0.0243629589676857, -0.03707075119018555, -0.027078431099653244, 0.0015951483510434628, 0.00...
44620d81aa6666e93963b197df339369e7f9e93d
abstract
0
6
Abstract
Ultrafast two-color pump-probe measurements, involving coherent acoustic phonon (CAP) waves, have provided information simultaneously on the mechanical properties and on the electronic structure of ferromagnetic GaMnAs. The elastic constant C11 of Ga1-xMnxAs (0.03<x<0.07) are observed to be systematically smaller than ...
{ "cite_spans": [] }
10.1103/PhysRevB.81.115208
0807.1740
Mechanical and Electronic Properties of Ferromagnetic GaMnAs Using Ultrafast Coherent Acoustic Phonons
[ "J. Qi", "J. A. Yan", "H. Park", "A. Steigerwald", "Y. Xu", "S. N. Gilbert", "X. Liu", "J. K. Furdyna", "S. T. Pantelides", "N. Tolk" ]
[ "cond-mat.mtrl-sci" ]
2,008
en
Physics
[ -0.007639180403202772, 0.004202884156256914, -0.023051027208566666, -0.01597248576581478, -0.019832121208310127, -0.09665870666503906, 0.009031242690980434, 0.021388178691267967, -0.04183051735162735, 0.06761227548122406, -0.029534604400396347, -0.018382851034402847, -0.010663578286767006, ...
e9931dca23aa1bf3ad1d82a9b05823c6063bc43c
subsection
1
6
Body
Ultrafast Dynamics of Coherent Acoustic Phonons in the Ferromagnetic Ga_{1-x}Mn_xAs/GaAs SystemJ. Qi, Y. Xu, A. Steigerwald, and N. Tolk Department of Physics and Astronomy, Vanderbilt University, Nashville, TN, 37235X. Liu and J. K. Furdyna Department of Physics, University of Notre Dame, Notre Dame, IN 46556T. V. Sha...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1203, "openalex_id": "", "raw": "H. Ohno, Science 281, 951 (1998).", "source_ref_id": "457144a1c1862efe206b45e1d18fcddc5a9740b3", "start": 938 }, { "arxiv_id": "", "doi": "", "end": 1203, ...
10.1103/PhysRevB.81.115208
0807.1740
Mechanical and Electronic Properties of Ferromagnetic GaMnAs Using Ultrafast Coherent Acoustic Phonons
[ "J. Qi", "J. A. Yan", "H. Park", "A. Steigerwald", "Y. Xu", "S. N. Gilbert", "X. Liu", "J. K. Furdyna", "S. T. Pantelides", "N. Tolk" ]
[ "cond-mat.mtrl-sci" ]
2,008
en
Physics
[ -0.016613993793725967, -0.006808075588196516, -0.05800404027104378, 0.029917392879724503, 0.018414223566651344, -0.04158838093280792, -0.02419632114470005, 0.013516985811293125, -0.0056486050598323345, 0.05861429125070572, -0.001690576784312725, -0.0178039763122797, -0.022258784621953964, ...
c8611e627db4aed9323948e206a0edb3c6826104
subsection
2
6
Body
Both pump and probe beams were focused onto the sample at the same spot with a diameter of around 100 \mu m and an intensity ratio of 10:1. The pump light typically had a fluence of 1.7 \mu J/cm^2. [Figure: Pump-probe response ofGa_{0.976}Mn_{0.024}As/GaAs at 10 K for 830 nm. Inset: thesubtracted oscillatory response d...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 1656, "openalex_id": "", "raw": "C. Thomsen, H. T. Grahn, H. J. Maris, and J. Tauc, Phys. Rev. B 34, 4129 (2005).", "source_ref_id": "da9d13baceff7b40e6b3bef50d65b51662ff2c8a", "start": 1411 }, { "arxiv_i...
10.1103/PhysRevB.81.115208
0807.1740
Mechanical and Electronic Properties of Ferromagnetic GaMnAs Using Ultrafast Coherent Acoustic Phonons
[ "J. Qi", "J. A. Yan", "H. Park", "A. Steigerwald", "Y. Xu", "S. N. Gilbert", "X. Liu", "J. K. Furdyna", "S. T. Pantelides", "N. Tolk" ]
[ "cond-mat.mtrl-sci" ]
2,008
en
Physics
[ -0.05066176503896713, 0.011330229230225086, -0.05874933674931526, -0.013748870231211185, 0.017380647361278534, -0.051516301929950714, -0.01857089437544346, 0.031190555542707443, -0.0017968140309676528, 0.053805235773324966, -0.020600415766239166, -0.004425274673849344, -0.005878748372197151,...
0ee4ede578ad0cf2ed7e9350daa0356e7ced5f5b
subsection
3
6
Body
We estimate that it takes about \Delta t (\approx 210 ps) for the strain wave to reach GaAs layer if assuming that V_{s(\text{GaMnAs})} is approximately equal to V_{s(\text{GaAs})} (4.78 \times 10^3 m/s at 10 K ). It can be seen from experimental results that 210 ps is around the transition region between the two disti...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 213, "openalex_id": "", "raw": "Y. A. Burenkov, Y. M. Burdukov, S. Y. Davidov, and S. P. Nikanorov, Sov. Phys. Solid State 76, 1175 (1973).", "source_ref_id": "fd55851d56a066d7b10682368cc3776455162f0e", "start": 0 ...
10.1103/PhysRevB.81.115208
0807.1740
Mechanical and Electronic Properties of Ferromagnetic GaMnAs Using Ultrafast Coherent Acoustic Phonons
[ "J. Qi", "J. A. Yan", "H. Park", "A. Steigerwald", "Y. Xu", "S. N. Gilbert", "X. Liu", "J. K. Furdyna", "S. T. Pantelides", "N. Tolk" ]
[ "cond-mat.mtrl-sci" ]
2,008
en
Physics
[ -0.05253726616501808, -0.016164138913154602, -0.07717269659042358, -0.03303040191531181, 0.012508509680628777, -0.04353174939751625, -0.023444870486855507, 0.005376598797738552, -0.005689502228051424, 0.05449100583791733, -0.019461072981357574, 0.012928258627653122, -0.02165902964770794, 0...
ed36e5a288c3e01d93461c123ce327cce1c32fdb
subsection
4
6
Body
Solid straight line is a linear fitof experimental data for Ga_{0.976}Mn_{0.024}As. (b) Absorptioncoefficient \alpha as a function of photon energy forGa_{0.976}Mn_{0.024}As (line+dot) and GaAs (line+opentriangle).]Another experimental result is that the absorption coefficient ¦Á can be directly obtained from our measu...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 613, "openalex_id": "", "raw": "J. Jungwirth, J. Sinova, J. Masek, J. Kucera, and A. H. MacDonald, Rev. Mod. Phys. 78, 809 (2006).", "source_ref_id": "df1731de1d059dc8cb2af493897f6987b2c0130c", "start": 343 }, ...
10.1103/PhysRevB.81.115208
0807.1740
Mechanical and Electronic Properties of Ferromagnetic GaMnAs Using Ultrafast Coherent Acoustic Phonons
[ "J. Qi", "J. A. Yan", "H. Park", "A. Steigerwald", "Y. Xu", "S. N. Gilbert", "X. Liu", "J. K. Furdyna", "S. T. Pantelides", "N. Tolk" ]
[ "cond-mat.mtrl-sci" ]
2,008
en
Physics
[ -0.007331604138016701, -0.00027679477352648973, -0.0722632184624672, -0.038817066699266434, 0.010818121954798698, -0.08874216675758362, 0.0022353383246809244, 0.04446263238787651, 0.024169117212295532, 0.043211452662944794, -0.036406259983778, -0.02920435182750225, -0.04006824642419815, -0...
2eae932c33338c5b814b0dd55656168630203010
subsection
5
6
Body
According to Eq.(REF ), in the vicinity of the bandgap the amplitude A for GaAs manifests itself a strong peak in REF . As also discussed above, the optical properties for Ga_{1-x}Mn_xAs are very different with GaAs, e.g. the absorption coefficient ¦Á for ferromagnetic Ga_{1-x}Mn_xAs varies smoothly in the wavelength r...
{ "cite_spans": [] }
10.1103/PhysRevB.81.115208
0807.1740
Mechanical and Electronic Properties of Ferromagnetic GaMnAs Using Ultrafast Coherent Acoustic Phonons
[ "J. Qi", "J. A. Yan", "H. Park", "A. Steigerwald", "Y. Xu", "S. N. Gilbert", "X. Liu", "J. K. Furdyna", "S. T. Pantelides", "N. Tolk" ]
[ "cond-mat.mtrl-sci" ]
2,008
en
Physics
[ -0.004623437765985727, 0.010124260559678078, -0.07757610082626343, -0.019546613097190857, 0.015152058564126492, -0.06280551105737686, -0.0224915761500597, 0.03640766441822052, 0.00863652117550373, 0.03280657157301903, -0.0452578105032444, -0.024429451674222946, -0.051849644631147385, 0.006...
0446ebf184fcf47a856a3b88c52686b4cab18644
abstract
0
9
Abstract
Building a \BBz experiment with the ability to probe neutrino mass in the inverted hierarchy region requires the combination of a large detector mass sensitive to \BBz, on the order of 1-tonne, and unprecedented background levels, on the order of or less than 1 count per year in the \BBz signal region. The MAJORANA Col...
{ "cite_spans": [] }
10.1088/1742-6596/173/1/012007
0807.1741
The Majorana Project
[ "S. R. Elliott" ]
[ "nucl-ex" ]
2,008
en
Physics
[ 0.009846953675150871, 0.0008156534750014544, -0.023416072130203247, 0.035452086478471756, 0.02326352521777153, -0.010487654246389866, -0.016658209264278412, 0.0229889377951622, -0.006929479539394379, 0.020838016644120216, -0.019907474517822266, 0.010289342142641544, 0.006807441357523203, 0...
9b1753a386fcbcaa441ad841be86fa523560ef06
subsection
1
9
Introduction
This is an exciting time in our quest to understand neutrinos — fundamental particles that play key roles in the early universe, in cosmology and astrophysics, and in nuclear and particle physics. Recent results from atmospheric, solar, and reactor-based neutrino oscillation experiments (Super-Kamiokande, SNO, and KamL...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 527, "openalex_id": "", "raw": "Ashie Y et al. 2004 Phys. Rev. Lett. 93 101801", "source_ref_id": "c24092d809c441f52c0e0d6aa237a909d1248f3a", "start": 197 }, { "arxiv_id": "", "doi": "", "end"...
10.1088/1742-6596/173/1/012007
0807.1741
The Majorana Project
[ "S. R. Elliott" ]
[ "nucl-ex" ]
2,008
en
Physics
[ 0.023260151967406273, -0.006967362016439438, -0.054548416286706924, 0.019200310111045837, 0.0003295760543551296, -0.05271690711379051, 0.024908509105443954, 0.025763213634490967, -0.005929507315158844, 0.0046436358243227005, -0.03348607197403908, 0.018147192895412445, -0.042033109813928604, ...
f4ff2ac24b53e9ec78a0fa54e03c3bd90235600e
subsection
2
9
Introduction
The predicted half-life for 0 \nu \beta \beta with an effective mass in this region is greater than 10^{27} years. An experiment will require approximately 1 tonne of isotope to be sensitive to such a long half-life, and it will require a background level of 1 count/tonne-year or better.
{ "cite_spans": [] }
10.1088/1742-6596/173/1/012007
0807.1741
The Majorana Project
[ "S. R. Elliott" ]
[ "nucl-ex" ]
2,008
en
Physics
[ -0.018024427816271782, 0.021519426256418228, -0.012942180037498474, 0.028890974819660187, 0.01863490790128708, -0.09834835678339005, -0.022328313440084457, 0.03876549378037453, 0.007028153166174889, 0.023701893165707588, -0.018528074026107788, 0.022358836606144905, -0.014254712499678135, 0...
21d2c24899b97f2ff57c69c344bfb1d8cc780c06
subsection
3
9
The
The objective of the first experimental phase of Majorana is to build a 60-kg module of high-purity Ge, of which 30 kg will be enriched to 86% in ^{76}Ge, to search 0 \nu \beta \beta . This module is referred to by the collaboration as the Demonstrator. The physics goals for this first phase are to:Probe the neutrino m...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 668, "openalex_id": "", "raw": "Klapdor-Kleingrothaus H V and Krivosheina I V 2006 Mod. Phys. Lett. A 21 1547", "source_ref_id": "12bbb4f85ec6ac76dc2f378cba830565ae3894ab", "start": 542 } ] }
10.1088/1742-6596/173/1/012007
0807.1741
The Majorana Project
[ "S. R. Elliott" ]
[ "nucl-ex" ]
2,008
en
Physics
[ 0.02390476129949093, -0.014454218558967113, -0.04298890382051468, 0.011471844278275967, 0.03404941037297249, -0.0331646129488945, -0.0026257862336933613, 0.04149390384554863, -0.0067275045439600945, 0.02471328154206276, -0.025552311912178993, 0.037130940705537796, -0.008710669353604317, 0....
672a6209d1aa649a9e98ce0f48eb80bce4131f8a
subsection
4
9
The
Right: A conceptual design of a two N-SC detector string.]The efficient commercial production of Ge detectors depends strongly on the yields for producing high-purity single crystals of Ge and for producing p-n junction diodes from these crystals. Single-crystal boules naturally favor right circular cylindrical geometr...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 2220, "openalex_id": "", "raw": "Aalseth C E, Avignone F T, Brodzinski R L, Miley H S and Reeves J H 1998 J. Radioanal. Nucl. Chem. 233 119", "source_ref_id": "0ce6b0d265e7307355a7f9f2942b5408770af88e", "start": 1907 ...
10.1088/1742-6596/173/1/012007
0807.1741
The Majorana Project
[ "S. R. Elliott" ]
[ "nucl-ex" ]
2,008
en
Physics
[ -0.002499204594641924, 0.006875674705952406, -0.04691636934876442, 0.04682479426264763, 0.008501111529767513, -0.02881525829434395, -0.034096021205186844, 0.02837265096604824, 0.015514146536588669, 0.04691636934876442, -0.04627535119652748, 0.021596180275082588, 0.01423974335193634, -0.001...
692df04cfc7b4d641d5f54f83af02ee5b2d37177
subsection
5
9
The
(Earlier attempts employing n-type material exhibited poor energy resolution at hight energies due to increased charge trapping.) This in turn results in an increased range of drift times and a distinct electric signal marking the arrival of the charge cloud at the central electrode. Figure REF illustrates the p-type ...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 710, "openalex_id": "", "raw": "Barbeau P, Collar J and Tench O 2007 JCAP 09 009", "source_ref_id": "30c6872478250026456f3b27b0ad7be3f04c6322", "start": 427 }, { "arxiv_id": "", "doi": "", "en...
10.1088/1742-6596/173/1/012007
0807.1741
The Majorana Project
[ "S. R. Elliott" ]
[ "nucl-ex" ]
2,008
en
Physics
[ 0.011064428836107254, -0.027912883087992668, -0.05945795401930809, 0.018878204748034477, 0.02167101949453354, -0.024418050423264503, -0.0029206278268247843, 0.02849281206727028, 0.0035043717361986637, 0.03919097036123276, -0.01614643633365631, 0.014353235252201557, -0.014742397703230381, 0...
262e3f242b1fe87a374552c9dc432cb8e35f5dfb
subsection
6
9
The
The cryostats themselves are situated within a thick layer of electroformed Cu comprising the innermost passive shielding layers, so extra cryostat wall and coldplate thickness is not a concern from the standpoint of backgrounds. However, thicker cryostat walls do reduce the potential for inter-cryostat granularity rej...
{ "cite_spans": [] }
10.1088/1742-6596/173/1/012007
0807.1741
The Majorana Project
[ "S. R. Elliott" ]
[ "nucl-ex" ]
2,008
en
Physics
[ -0.0005151006043888628, -0.013957318849861622, -0.05848490446805954, 0.025457417592406273, 0.02527426928281784, 0.008012676611542702, -0.017704198136925697, 0.008134773932397366, 0.0009290889138355851, 0.06984001398086548, 0.0032375026494264603, 0.023198604583740234, -0.00016442679043393582,...
01f3177899beef27eca1012e49d8816766dd0db2
subsection
7
9
The
This high-Z shielding enclosure will be contained inside a gas-tight Rn exclusion box made of stainless-steel sheet. Outside this bulk high-Z shielding will be a layer of hydrogenous material, some of which will be doped with a neutron absorber such as boron, intended to reduce the neutron flux. Finally, active cosmic-...
{ "cite_spans": [ { "arxiv_id": "", "doi": "", "end": 834, "openalex_id": "", "raw": "Howe M, Cox G, Harvey P, McGirt F, Rielage K, Wilkerson J and Wouters J 2004 IEEE Transactions on Nuclear Science 51 878–883", "source_ref_id": "768463d1aa3858bcf1cf8e3ca94b12100ec61b9b", ...
10.1088/1742-6596/173/1/012007
0807.1741
The Majorana Project
[ "S. R. Elliott" ]
[ "nucl-ex" ]
2,008
en
Physics
[ -0.04373950511217117, 0.010934876278042793, -0.05475832149386406, 0.02791331335902214, 0.006928728427737951, -0.047097038477659225, -0.02006889320909977, 0.03974098712205887, -0.006844790186733007, 0.025914054363965988, -0.026921315118670464, 0.009164540097117424, -0.029729433357715607, 0....
e15e494b0c222f41ff279a10b5877b765d0c0ef3
subsection
8
9
Conclusion
The Majorana collaboration is carrying out R&D to develop a 1-tonne 0 \nu \beta \beta experiment based on enriched ^{76}Ge. The Ge detectors will be housed in a classic cryostat design that is constructed from ultra low-radioactivity materials. The cryostats will be contained within a passive shield, and active veto sy...
{ "cite_spans": [] }
10.1088/1742-6596/173/1/012007
0807.1741
The Majorana Project
[ "S. R. Elliott" ]
[ "nucl-ex" ]
2,008
en
Physics
[ -0.00984007865190506, 0.0034363993909209967, -0.033196914941072464, 0.054951880127191544, 0.036980386823415756, -0.02370772324502468, -0.01080883014947176, 0.06822454184293747, -0.020534489303827286, -0.003728169249370694, -0.030344055965542793, 0.015141515992581844, 0.002460019662976265, ...
912b064b0387cbecd9509f6c341a67b8986f7b33
abstract
0
20
Abstract
We present a light and fast, public available, ray-tracer {\tt Splotch} software tool which supports the effective visualization of cosmological simulations data. We describe the algorithm it relies on, which is designed in order to deal with point-like data, optimizing the ray-tracing calculation by ordering the parti...
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.03453703969717026, -0.01387430913746357, -0.018931301310658455, -0.016780363395810127, -0.03380480408668518, -0.011982704512774944, 0.028007952496409416, -0.034231942147016525, 0.026879090815782547, 0.037160877138376236, 0.020182199776172638, 0.0434153750538826, 0.02352301776409149, 0.0...
adcb919d9f5228172b72f65417fd3ea31aa29528
subsection
1
20
Introduction
According to the standard theory of the Big Bang, our universe came into existence as a singularity around 13.7 billion years ago. After its initial appearance, it inflated from a very dense, hot and homogeneous state to the expanded, cooled and very structured state of our current universe. During its evolution, plane...
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.04508088901638985, 0.02568420208990574, -0.013284669257700443, 0.022342050448060036, -0.027958085760474205, -0.02189948409795761, -0.016527624800801277, -0.01512361504137516, 0.03412351384758949, 0.016695493832230568, -0.0036454626824706793, 0.029865706339478493, -0.008317225612699986, ...
df4f4f4ad5712ea5001577ea37f78ae276f50580
subsection
2
20
Introduction
We will describe methods used to generate the data used for the Splotch rendering and the technique adopted to create the stereographic version of the movie.
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.041840262711048126, 0.011100945062935352, -0.016433976590633392, 0.016388198360800743, -0.046814706176519394, -0.007183189038187265, 0.045136213302612305, 0.023727793246507645, 0.025482581928372383, 0.007034413516521454, -0.006073094438761473, 0.046631596982479095, -0.0005822274251841009,...
db67725ecbf11ed1ab2699994852f9e318e1f024
subsection
3
20
Splotch
The underlying visualization algorithm is a derivate of what in general is called volumetric ray castinghttp://en.wikipedia.org/wiki/Volume_ray_casting and uses an approximation of the radiative transfer equation, which – together with the application of perspective – gives the produced images a very realistic appearan...
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.035561639815568924, 0.00024920812575146556, 0.0062080249190330505, 0.02535102516412735, -0.028113538399338722, 0.003447418799623847, 0.018330270424485207, 0.0417276956140995, 0.0298382006585598, 0.031043939292430878, -0.021306460723280907, -0.007711381651461124, 0.007169562857598066, 0....
8040ca845513244da6ed45cad495149abcba07fe
subsection
4
20
Physical motivation of the algorithm
The rendering algorithm of Splotch is generally designed to handle point-like particle distributions. We especially have Smoothed Particle Hydrodynamic , simulations in mind, where the density of the fluid is described by spreading tracer particles by a kernel, most commonly the B_2-SplineW(x,h)=\frac{8}{\pi h^3}\left...
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.029122285544872284, -0.029686730355024338, -0.009374355897307396, -0.03285982459783554, -0.027993397787213326, -0.021998081356287003, 0.05735976621508598, -0.009176037274301052, 0.02164721116423607, 0.019389431923627853, -0.030602047219872475, 0.05925142019987106, 0.0037623278331011534, ...
05a480ca4c144cbd068c5b7f292ae71bb2e960aa
subsection
5
20
Physical motivation of the algorithm
The mapping between the scalar property and the three components of \bf {E} and \bf {A} (for red, green and blue) is typically achieved via a colour look-up table or palette, which can be provided to the ray-tracer as an external file to allow a maximum of flexibility.Assuming that absorption and emission are homogeneo...
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ 0.0070303319953382015, -0.033690664917230606, -0.021544935181736946, 0.0026492488104850054, -0.010055320337414742, -0.03817664831876755, 0.02949458919465542, -0.016067150980234146, 0.043334003537893295, 0.005123025272041559, -0.013786012306809425, 0.024962827563285828, 0.018935739994049072, ...
cd5ed4971ad885f8c24bf25bbe78b0d2bf6cbeaf
subsection
6
20
Implementation of the algorithm
The rendering algorithm now proceeds as follows:A camera position \vec{c}, a look-at point \vec{l} (e.g. the position of the object of interest) and a sky vector \vec{s} are specified by the user. The latter just defines the up-direction for the scene, and the first two define the viewing direction \vec{v}, i.e. \vec{v...
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.03829529508948326, -0.0206581000238657, 0.002946525579318404, 0.01404415164142847, -0.022077009081840515, 0.06438492238521576, 0.018995078280568123, 0.013410982675850391, 0.014173836447298527, 0.024106202647089958, -0.013327068649232388, -0.0034824309404939413, 0.043848875910043716, 0.0...
e1c2a4b532f0d7bc6cbbd11651ce1ac1297bc225
subsection
7
20
Public version of the algorithm
Besides various internal optimisations, Splotch uses OpenMPhttp://openmp.org/ to generate different regions of the image distributed over several cores on shared memory platforms. The algorithm requires 30 bytes per particle, which allows to render more than 70 million particles on a standard PC with 2 GByte of main me...
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.06856314092874527, -0.004163089208304882, -0.014233109541237354, -0.02008661814033985, -0.03118310123682022, -0.05058286711573601, 0.013393622823059559, -0.04444698616862297, 0.02234560064971447, -0.04069219157099724, -0.02530669793486595, 0.03980691730976105, 0.0005408963188529015, 0.0...
70ad8b0f0d938129fef98e30f9a48476560f2775
subsection
8
20
Performance of the algorithm
The CPU time consumption of splotch to render individual frames depends on the frame size, the number of particles to visualize as well as their apparent size, e.g. over how many pixels they get spread. For a typical setup we find T_\mathrm {CPU} \propto n_\mathrm {pixel} and T_\mathrm {CPU} \propto -0.5 \varphi , e.g....
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.03198285400867462, 0.003929191268980503, -0.01594565063714981, -0.019134780392050743, -0.04495299980044365, -0.028122328221797943, 0.03256269544363022, -0.013229548931121826, 0.013229548931121826, -0.015762541443109512, -0.008583185262978077, 0.023636184632778168, 0.014015387743711472, ...
5a925edd2955ed6896be91ef3b6cc118deea899d
subsection
9
20
Application to cosmological simulations
Clusters of galaxies are ideal cosmological probes . They are the largest collapsed objects in the Universe and so are very sensitive to the structure formation process. The evolution of the diffuse cluster baryons (the so-called intra cluster medium, ICM) has a nontrivial interplay with the cosmological environment, a...
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.03555738180875778, 0.02815595269203186, -0.02913263626396656, 0.0027488297782838345, -0.01780921220779419, -0.028598513454198837, -0.034306008368730545, -0.03110126405954361, 0.013269160874187946, 0.0067757414653897285, -0.031589604914188385, 0.0005856285570189357, -0.006764295976608992, ...
5f6fb72ab3888c0154c0db91fc4b9cd3e733ed9b
subsection
10
20
Visualisations using flat projection
For visualising cosmological structures it is often useful to adopt a flat projection to obtain the equivalent of a map as obtained from a very distant object. In this case, the raytracing – due to handling of absorption – still can lead to some three-dimensional impression, as becomes apparent in figure REF . Especial...
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.043730515986680984, -0.008300558663904667, -0.02340635471045971, 0.015990782529115677, -0.027281982824206352, -0.03961075469851494, 0.013702024705708027, -0.00942204985767603, 0.01317561138421297, 0.03085244446992874, 0.0026797528844326735, 0.01210752408951521, 0.0011624977923929691, 0....
5c2fe8b5ba3608ac360698542c38cdca70deb391
subsection
11
20
Animations of evolving galaxy clusters
To display the dynamics characterising the formation of galaxy clusters, the realistic, 3D impression obtained when rendering with Splotch results in amazing animations, as shown in Figure REF . This movie is based on processing nearly 250 outputs (each \approx 1GB in size) of a high resolution, “zoomed” galaxy cluster...
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.037131208926439285, 0.019847042858600616, -0.03673457354307175, 0.02359982766211033, -0.03377505764365196, 0.0054575554095208645, -0.0042600203305482864, -0.03012906201183796, -0.012127900496125221, -0.02662036009132862, -0.01676548831164837, 0.009557396173477173, -0.019969085231423378, ...
3a01269d9ea6d5fcad9e61ff8a5aabe2fee49988
subsection
12
20
Animations of evolving galaxy clusters
Thereby, it produces one frame for every entry in the file, without having to reload the cosmological simulation every time. This can be quite handy, especially when the simulation data are huge (several GB or more). It is also useful to pre-process the data to emphasise different aspects of a cosmological simulation. ...
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.05394739285111427, -0.01833845116198063, -0.025051362812519073, 0.023434162139892578, -0.009573526680469513, 0.005259718280285597, 0.019299618899822235, 0.0063581946305930614, -0.02024552971124649, -0.0033068715129047632, -0.025234442204236984, -0.020001422613859177, -0.002589810406789183...
b9b847ee78d1575c153600f1eb7e4c84d9d55687
subsection
13
20
The 4D Universe
The visual rendering of the universe and its evolution can represent a spectacular approach toward the intuitive explanation of the complex phenomena that are at the bases of our incredibly fascinating theory of cosmology, for both scientists and common people. Unfortunately, an effective implementation of this approac...
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.02493681013584137, 0.03867189586162567, 0.014559190720319748, 0.009744280017912388, -0.03378830850124359, 0.013094115070998669, -0.02600509487092495, -0.018756022676825523, 0.020465277135372162, 0.002918705577030778, 0.024112705141305923, 0.027592260390520096, 0.021670913323760033, 0.04...
cc590e402e9a15ab91fcc78d5e3cdd3d71954731
subsection
14
20
Body
The realisation of such a complex visualisation project required to properly fine-tune the usage of Splotch. Colours, transparencies, smoothing lengths adapt to the represented environment and objects, which continuosly change following the evolution of cosmological structures and the movements of the camera.The movie ...
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.05622140318155289, 0.010652155615389347, -0.006104386877268553, 0.02272358164191246, -0.020922787487506866, 0.03601588308811188, -0.00007159540109569207, -0.014238482341170311, 0.051643114537000656, -0.005825874395668507, -0.0077106039971113205, 0.01458948478102684, 0.0237765870988369, ...
4af989c009fd226f70ea34228bb5a0b3331a6225
subsection
15
20
The Big Bang
The representation of the first few instants after the Big Bang is an incredibly difficult task. Nothing that we can conceive is able to properly describe what happened in that initial time frame. We have adopted an abstract geometric representation, in which a spherical symmetric mesh represents the expanding space-ti...
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ 0.002832694910466671, 0.013863991014659405, -0.020113086327910423, -0.013680866919457912, -0.04431593790650368, -0.022234270349144936, 0.030795304104685783, 0.023760301992297173, 0.03744879737496376, -0.005779841914772987, 0.013749537989497185, 0.015473953448235989, 0.007431770674884319, 0...
c5b3a9a24cefac62b3fb939577d777406775b5a2
subsection
16
20
The evolution of the Universe
For a project like the 4D Universe, it is necessary to create the images making use of data from an extremely high resolution simulation. We used a simulation of a large cosmic structure which connects 4 very massive galaxy clusters . The high resolution region in this simulation is more than one order of magnitude lar...
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.018374359235167503, 0.04315837845206261, -0.01600888930261135, 0.012872733175754547, -0.03961780294775963, 0.028446681797504425, 0.004402826074510813, 0.003496698336675763, -0.012330965138971806, -0.003412762423977256, 0.00850806012749672, -0.00850806012749672, 0.007378739304840565, 0.0...
e3eff67ad2769db543ddc243eefe2312a6459c00
subsection
17
20
The Galaxy
Galaxies, and in particular spiral galaxies, are amongst the most spectacular objects in the universe. For many galaxies, high resolution images have been caught (e.g. by the Hubble Space Telescope, http://heritage.stsci.edu/2005/12a/big.html), which provide a detailed description of their structure and morphological f...
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.0352165512740612, 0.02447458729147911, -0.011199717409908772, -0.0021533516701310873, 0.015990877524018288, 0.01728784665465355, -0.030791593715548515, -0.027572056278586388, 0.01618923805654049, -0.007533869706094265, -0.008437934331595898, 0.027449989691376686, -0.0007681686547584832, ...
1c0754566336fb2e67b8bdbc1c482a3f61871ba1
subsection
18
20
The Galaxy
This results in a purely kinematic approach (no dynamics considered).\bullet The stars in the bulge and in the globular clusters rotate around the galaxy center, each with its own constant velocity, calculated in order to balance the gravitational attraction of the matter distributed inside the orbit.\bullet Equations ...
{ "cite_spans": [] }
10.1088/1367-2630/10/12/125006
0807.1742
Splotch: Visualizing Cosmological Simulations
[ "K. Dolag", "M. Reinecke", "C. Gheller", "S. Imboden" ]
[ "astro-ph" ]
2,008
en
Physics
[ -0.03420664370059967, 0.026883188635110855, -0.022885801270604134, 0.004336859565228224, -0.0221076849848032, 0.009756980463862419, 0.009085663594305515, -0.02633392997086048, 0.018537499010562897, -0.0006036130362190306, -0.0198191050440073, 0.012693991884589195, 0.011336100287735462, 0.0...