id large_stringlengths 9 16 | title large_stringlengths 1 382 | abstract large_stringlengths 3 6.09k | publish_date date32 | update_date date32 | categories large listlengths 1 13 | authors large_stringlengths 3 62.8k |
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hep-lat/9412072 | Hot electroweak matter | This talk summarises recent results on lattice Monte Carlo studies of finite
T electroweak phase transition. Particular attention is given to the 3d
effective theory approach, replacing the full 4d theory by a three dimensional
effective theory of the modes constant in imaginary time. | 1994-12-14 | 2009-10-28 | [
"hep-lat"
] | K. Kajantie |
hep-lat/9412073 | Quantum gravity and spin systems | A new method for nonperturbative investigations of quantum gravity is
presented in which the simplicial path integral is approximated by the
partition function of a spin system. This facilitates analytical and numerical
computations considerably. In two dimensions equivalence to an Ising model with
ternary couplings is... | 1994-12-14 | 2009-10-28 | [
"hep-lat"
] | W. Beirl, P. Homolka, B. Krishnan, H. Markum, J. Riedler |
hep-lat/9412076 | Complex-Temperature Singularities in the $d=2$ Ising Model. III.
Honeycomb Lattice | We study complex-temperature properties of the uniform and staggered
susceptibilities $\chi$ and $\chi^{(a)}$ of the Ising model on the honeycomb
lattice. From an analysis of low-temperature series expansions, we find
evidence that $\chi$ and $\chi^{(a)}$ both have divergent singularities at the
point $z=-1 \equiv z_{\... | 1994-12-14 | 2015-06-25 | [
"hep-lat"
] | Victor Matveev and Robert Shrock |
hep-lat/9412064 | Probing the Continuum Limit in Non-Compact QED: New Results on Large
Lattices | We present new Monte Carlo results in non-compact lattice QED with staggered
fermions down to m_0 = 0.005. This extends our previous investigations on the
nature of the continuum limit of QED. | 1994-12-13 | 2008-11-26 | [
"hep-lat"
] | M. Goeckeler, R. Horsley, V. Linke, P.E.L. Rakow, G. Schierholz and H.
Stueben |
hep-lat/9412065 | Point-to-point Hadron Correlation Functions using the
Sheikholeslami--Wohlert Action | We calculate correlations between hadronic current operators as a function of
their spatial separation, in a quenched lattice QCD simulation at $\beta=6.2$
on a $24^3\times48$ lattice. The lattice fermion formulation used is that due
to Sheikholeslami and Wohlert. The correlation functions are then compared with
the co... | 1994-12-13 | 2007-05-23 | [
"hep-lat"
] | UKQCD Collaboration: S.J. Hands, P.W. Stephenson and A. McKerrell |
hep-lat/9412070 | Critical Behavior of the chiral condensate at the QCD phase transition | We study the critical behavior of the chiral condensate near the QCD phase
transition in the background of two fixed light dynamical (sea) quarks. We
study the condensate for $5.245 \leq \beta \leq 5.3$ and $10^{-10} \leq m_{val}
\leq 10$ | 1994-12-13 | 2009-10-28 | [
"hep-lat"
] | Shailesh Chandrasekharan |
hep-lat/9412068 | The status of US Teraflops-scale projects | The current status of United States projects pursuing Teraflops-scale
computing resources for lattice field theory is discussed. Two projects are in
existence at this time: the Multidisciplinary Teraflops Project, incorporating
the physicists of the QCD Teraflops Collaboration, and a smaller project,
centered at Columb... | 1994-12-13 | 2009-10-28 | [
"hep-lat"
] | Robert D. Mawhinney |
hep-lat/9412067 | Dynamical-parameter algorithm for U(1) gauge theory | We present an algorithm for Monte Carlo simulations which is able to overcome
the suppression of transitions between the phases in compact U(1) lattice gauge
theory in 4 dimensions. | 1994-12-13 | 2009-10-28 | [
"hep-lat"
] | W. Kerler, C. Rebbi and A. Weber |
hep-lat/9412066 | Topological structures and phases in U(1) gauge theory | We show that topological properties of minimal Dirac sheets as well as of
currents lines characterize the phases unambiguously. We obtain the minimal
sheets reliably by a suitable simulated-annealing procedure. | 1994-12-13 | 2009-10-28 | [
"hep-lat"
] | W. Kerler, C. Rebbi and A. Weber |
hep-lat/9412069 | Hadron masses on a 16^3 x 40 lattice at \beta = 5.7 | We report on the hadron mass spectrum obtained on a 16^3 x 40 lattice in full
QCD at \beta = 5.7 using two flavors of staggered fermions with m a = 0.01. We
study the effective mass plateaus for different sized sources. Our mass results
are slightly lighter than our earlier 16^3 x 32 calculation. The Landau gauge
\Delt... | 1994-12-13 | 2009-10-28 | [
"hep-lat"
] | Dong Chen |
hep-lat/9412071 | An Effective Action for Finite Temperature QCD with Fermions | Using lattice perturbation theory at finite temperature, we compute for
staggered fermions the one-loop fermionic corrections to the spatial and
temporal plaquette couplings as well as the leading $Z_N$ symmetry breaking
coupling. Numerical and analytical considerations indicate that the finite
temperature corrections ... | 1994-12-13 | 2009-10-28 | [
"hep-lat"
] | Peter N. Meisinger and Michael C. Ogilvie |
hep-lat/9412063 | Semi-Leptonic Decays of $B$-Mesons | Form factors relevant for semi-leptonic $B\to D,\ D^*$ decays are obtained in
quenched lattice QCD. Tests of heavy-quark symmetry as well as determinations
of the Isgur-Wise function and $|V_{cb}|$ are presented. | 1994-12-13 | 2010-11-01 | [
"hep-lat",
"hep-ph"
] | Laurent Lellouch (for the UKQCD Collaboration) |
hep-lat/9412062 | Low-Temperature Series for Ising Model by Finite-Lattice Method | We have calculated the low-temperature series for the second moment of the
correlation function in $d=3$ Ising model to order $u^{26}$ and for the free
energy of Absolute Value Solid-on-Solid (ASOS) model to order $u^{23}$, using
the finite-lattice method. | 1994-12-13 | 2009-10-28 | [
"hep-lat"
] | H. Arisue and K. Tabata |
hep-lat/9412060 | Gauge Theory in d=2+1 at High Temperature: Z_N interface | We calculate on the lattice the interface tension in the SU(2) pure gauge
theory in d=2+1 at high temperature. The result is compared to the perturbative
prediction. The agreement confirms applicability of the perturbation theory in
this case. | 1994-12-12 | 2009-10-28 | [
"hep-lat"
] | C. Korthals Altes, A. Michels, M. Stephanov, M. Teper |
hep-lat/9412058 | Towards a perfect fixed point action for SU(3) gauge theory | We present an overview of the construction and testing of actions for SU(3)
gauge theory which are approximate fixed points of renormalization group
equations (at $\beta\rightarrow \infty$). Such actions are candidates for use
in numerical simulations on coarse lattices. | 1994-12-12 | 2009-10-28 | [
"hep-lat"
] | T. DeGrand, A. Hasenfratz, P. Hasenfratz, F. Niedermayer, U. Weise |
hep-lat/9412061 | Finite Temperature QCD Interfaces Out of Equilibrium | The properties of interfaces in non-equilibrium situations are studied by
constructing a density matrix with a space-dependent temperature. The
temperature gradient gives rise to new terms in the equation for the order
parameter. Surface terms induced in effective actions by abrupt temperature
changes provide a natural... | 1994-12-12 | 2009-10-28 | [
"hep-lat"
] | Michael C. Ogilvie |
hep-lat/9412059 | $\pi N \sigma$ Term and Quark Spin Content of the Nucleon | We report results of our calculation on the $\pi N\sigma$ term and quark spin
content of the nucleon on the quenched $16^3 \times 24$ lattice at $\beta =
6.0$. The disconnected insertions which involve contributions from the sea
quarks are calculated with the stochastic $Z_2$ noise algorithm. As a physical
test of the ... | 1994-12-12 | 2009-10-28 | [
"hep-lat",
"hep-ph"
] | Shao-Jing Dong and Keh-Fei Liu |
hep-lat/9412056 | On strongly coupled quenched QED4, again: chiral symmetry breaking,
Goldstone mechanism and the nature of the continuum limit | We explore the possibility of a trivial continuum limit of strongly coupled
quenched QED4 by contrasting our results with a Nambu--Jona Lasinio equation of
state. The data does not compare favorably with such scenario. We study in
detail the interplay of chiral symmetry breaking with the Goldstone mechanism,
and clarif... | 1994-12-10 | 2009-10-28 | [
"hep-lat"
] | M-P Lombardo A. Kocic and J. B. Kogut |
hep-lat/9412057 | Quenched QCD at finite density: $g=1$ and $g=\infty$ | We report on our ongoing effort to understand quenched lattice QCD at finite
baryon number density. The quenched theory is sensitive to the baryon mass both
at strong coupling and in the scaling region. However, we find that the
quenched model is pathological for $\mu > m_\pi/2$ at $\beta= 6.0$, in
agreement with past ... | 1994-12-10 | 2009-10-28 | [
"hep-lat"
] | J. B. Kogut, M-P Lombardo and D. K. Sinclair |
hep-lat/9412055 | Towards a Lattice Calculation of the Nucleon Structure Functions | We have initiated a programme to compute the lower moments of the unpolarised
and polarised deep inelastic structure functions of the nucleon in the quenched
approximation. We review our progress to date. | 1994-12-10 | 2008-11-26 | [
"hep-lat",
"hep-ph"
] | M. Goeckeler, R. Horsley, M. Ilgenfritz, H. Perlt, P. Rakow, G.
Schierholz and A. Schiller |
hep-lat/9412054 | Finite Temperature Transition in Two Flavor QCD with Renormalization
Group Improved Action | The finite temperature transition or crossover in QCD with two degenerate
Wilson quarks is investigated using a renormalization group improved action. At
$\beta=2.0$ and 2.1 where $a^{-1} \sim 1.0-1.2$ GeV, the expectation value of
the Polyakov loop and the pion screening mass on an $8^3 \times 4$ lattice vary
smoothly... | 1994-12-10 | 2009-10-28 | [
"hep-lat"
] | Y.Iwasaki, K.Kanaya, S.Sakai and T.Yoshie |
hep-lat/9412050 | Precision $\Upsilon$ and $J/\Psi$ spectroscopy with lattice NRQCD | We present new results on $\Upsilon$ and $J/\Psi$ spectroscopy using Lattice
NRQCD. Charmonium results at quenched $\beta$ = 5.7 show agreement with
experiment within understood systematic errors. We compare bottomonium results
at quenched $\beta$s 6.0 and 5.7 and show that the $1P-1S$ splitting scales
with $\Lambda_V$... | 1994-12-09 | 2019-08-21 | [
"hep-lat"
] | NRQCD collaboration (presented by C.T.H.Davies) |
hep-lat/9412052 | Effective Scalar Theory of the Electroweak Phase Transition | This talk summarizes results obtained from simulating a three dimensional
pure Order Parameter (OP) model of the Electroweak Phase Transition (EWPT). Its
detailed presentation appears in \cite{karsch}. | 1994-12-09 | 2009-10-28 | [
"hep-lat"
] | F. Karsch, T. Neuhaus and A. Patk\'os |
hep-lat/9412051 | Evidence for a Critical Behavior in $4D$ Pure Compact QED | We present evidence about a critical behavior of $4D$ compact QED (CQED) pure
gauge theory. Regularizing the theory on lattices homotopic to a sphere, we
present evidence for a critical, i.e. second order like behavior at the
deconfinement phase transition for certain values of the coupling parameter
$\gamma$. | 1994-12-09 | 2009-10-28 | [
"hep-lat"
] | J. Jers\'ak, C.B. Lang and T. Neuhaus |
hep-lat/9412048 | More on random-lattice fermions | The lattice fermion determinants, in a given background gauge field, are
evaluated for two different kinds of random lattices and compared to those of
naive and wilson fermions in the continuum limit. While the fermion doubling is
confirmed on one kind of lattices, there is positive evidence that it may be
absent for t... | 1994-12-09 | 2009-10-28 | [
"hep-lat"
] | T.D. Kieu, J.F. Markham and C.B. Paranavitane |
hep-lat/9412049 | Renormalons on the Lattice | We present the first lattice calculation of the B-meson binding energy
$\labar$ and of the kinetic energy $\lambda_1/2 m_Q$ of the heavy-quark inside
the pseudoscalar B-meson. In order to cancel the ambiguities due to the
ultraviolet renormalons present in the operator matrix elements, this
calculation has required the... | 1994-12-09 | 2009-10-09 | [
"hep-lat"
] | M. Crisafulli, V. Gimenez, G. Martinelli, C.T. Sachrajda |
hep-lat/9412047 | A numerical attempt on the Chiral Schwinger Model | The chiral Schwinger model is formulated in the wilson-fermion formulation on
the lattice and then simulated by the complex langevin algorithm. The
simulation is done both without and with gauge fixing to the Lorentz gauge for
the compact gauge links. Some preliminary results are presented which indicate
that the compl... | 1994-12-09 | 2009-10-28 | [
"hep-lat"
] | T.D. Kieu and P.S. Hawkins |
hep-lat/9412053 | The Forgotten Potts Models | The q=10 and q=200 state Potts models coupled to 2d gravity are investigated
numerically and shown to have continuous phase transitions, contrary to their
behavior on a regular lattice. Critical exponents are extracted and possible
critical behavior for general q-state Potts models coupled to gravity is
discussed. | 1994-12-09 | 2009-10-28 | [
"hep-lat"
] | Gudmar Thorleifsson |
hep-lat/9412040 | On the screening of the potential between adjoint sources in $QCD_3$ | We calculate the potential between adjoint sources in $SU(2)$ pure gauge
theory in three dimensions. We investigate whether the potential saturates at
large separations due to the creation of a pair of gluelumps, colour-singlet
states formed when glue binds to an adjoint source. | 1994-12-08 | 2009-10-28 | [
"hep-lat"
] | Grigorios I. Poulis (NIKHEF-K) and Howard D. Trottier (SFU) |
hep-lat/9412042 | Scalar Glueball Decay | We evaluate the coupling constant for the lightest scalar glueball to decay
to pseudoscalar meson pairs. The calculation is done in the valence
approximation on a $16^3 \times 24$ lattice at $\beta = 5.70$ for two different
values of pseudoscalar meson mass. | 1994-12-08 | 2009-10-28 | [
"hep-lat",
"hep-ph"
] | J. Sexton, A. Vaccarino and D. Weingarten |
hep-lat/9412041 | Accurate hadron spectroscopy on blocked configurations by
tadpole-renormalized, clover-improved Wilson quark action | We compare the quenched hadron spectrum on blocked and unblocked lattices for
the Wilson quark action, the clover action and the tadpole-improved clover
action. The latter gives a spectrum markedly closer to the original one, even
though the cutoff is 1/a ~ 500 Mev. | 1994-12-08 | 2009-10-28 | [
"hep-lat"
] | Artan Borici and Philippe de Forcrand |
hep-lat/9412045 | Partition Function Zeros in Non-compact QED | The lowest zeros of the lattice partition function for non-compact QED are
found in the complex fermion mass plane on $6^4$, $8^4$ and $10^4$ lattices at
intermediate values of the coupling. The scaling of the low lying zeros with
lattice size is analysed. | 1994-12-08 | 2009-10-28 | [
"hep-lat"
] | A. Ali Khan and I. Barbour |
hep-lat/9412043 | Cooling in QCD Spectroscopy | We test the cooling algorithm with gluonic and staggered hadronic
spectroscopy on $SU(3)$ gauge field configurations generated with two flavors
of staggered dynamical fermions. We find cooling is not reliable as the basis
for improved hadronic operators. We also find that performing cooling sweeps to
reveal more clearl... | 1994-12-08 | 2009-10-28 | [
"hep-lat"
] | Robert G. Edwards, Khalil Bitar, Urs M. Heller, and A.D. Kennedy |
hep-lat/9412046 | Quenched results on $B$ Mesons with NRQCD | Preliminary results on spectrum and decay constant of $B$ mesons from a
quenched simulation at $\beta = 6.0$ on an $16^3\times48$ lattice are
discussed. The heavy quark has been implemented using both an NRQCD and the
static formulation, the light one with a clover improved Wilson formulation.
Both the NRQCD Hamiltonia... | 1994-12-08 | 2015-06-25 | [
"hep-lat"
] | A. Ali Khan, S. Collins, C. T. H. Davies, D. Henty, J. Shigemitsu and
J. Sloan |
hep-lat/9412044 | The continuum limit of the lattice Gribov problem, and a solution based
on Hodge decomposition | We study gauge fixing via the standard local extremization algorithm for
2-dimensional $U(1)$. On a lattice with spherical topology $S^2$ where all
copies are lattice artifacts, we find that the number of these 'Gribov' copies
diverges in the continuum limit. On a torus, we show that lattice artifacts can
lead to the w... | 1994-12-08 | 2009-10-28 | [
"hep-lat"
] | Philippe de Forcrand and James E. Hetrick |
hep-lat/9412038 | Thermal Phase Transition in Mixed Action SU(3) Lattice Gauge Theory and
Wilson Fermion Thermodynamics | We study the thermal phase diagram of pure SU(3) lattice gauge theory with
fundamental and adjoint couplings. We improve previous estimates of the
position of the bulk transition line and determine the thermal deconfinement
transition lines for $N_t=2,4,6,$ and 8. The endpoint of the bulk transition
line $(\beta_f, \be... | 1994-12-07 | 2008-11-26 | [
"hep-lat"
] | T. Blum, C. DeTar, Urs M. Heller, Leo Karkkainen, K. Rummukainen, and
D. Toussaint |
hep-lat/9412037 | SU(2) potentials in quantum gravity | We present investigations of the potential between static charges from a
simulation of quantum gravity coupled to an SU(2) gauge field on $6^{3}\times
4$ and $8^{3}\times 4$ simplicial lattices. In the well-defined phase of the
gravity sector where geometrical expectation values are stable, we study the
correlations of... | 1994-12-07 | 2009-10-28 | [
"hep-lat"
] | W. Beirl, B.A. Berg, B. Krishnan, H. Markum and J. Riedler |
hep-lat/9412039 | One Spin Trace Formalism for $ B_K $ | It has been known for some time that there are two methods to calculate $ B_K
$ with staggered fermions: one is the two spin trace formalism and the other is
the one spin trace formalism. Until now, the two spin trace formalism has been
exclusively used for weak matrix element calculations with staggered fermions.
Here... | 1994-12-07 | 2009-10-28 | [
"hep-lat",
"hep-ph",
"hep-th"
] | Weonjong Lee and Markus Klomfass |
hep-lat/9412034 | Strongly Interacting Higgs Sector without Technicolor | Simulation results are presented on Higgs mass calculations in the
spontaneously broken phase of the Higgs sector in the minimal Standard Model
with a higher derivative regulator. A heavy Higgs particle is found in the TeV
mass range in the presence of a complex conjugate ghost pair at higher
energies. The ghost pair e... | 1994-12-06 | 2008-02-03 | [
"hep-lat"
] | C. Liu, K. Jansen and J. Kuti |
hep-lat/9412036 | Form Factors for Semileptonic Decays of Heavy-Light Hadrons | The strong coupling lattice QCD solution \cite{APtifr} for the Isgur-Wise
functions, parametrising the semileptonic decay form factors of hadrons
containing a single heavy quark, is reviewed. Several useful features connected
with the result are pointed out. | 1994-12-06 | 2009-10-28 | [
"hep-lat",
"hep-ph"
] | Apoorva Patel |
hep-lat/9412035 | QCD on Coarse Lattices | We show that the perturbatively-improved gluon action for QCD, once it is
tadpole-improved, gives accurate results even with lattice spacings as large as
0.4~fm. {\em No\/} tuning of the couplings is required. Using this action and
lattice spacing, we obtain a static potential that is rotationally invariant to
within a... | 1994-12-06 | 2009-10-28 | [
"hep-lat"
] | M. Alford, W. Dimm, G. Hockney, P. Lepage and P. Mackenzie |
hep-lat/9412033 | Massless Fermions on the Lattice | We consider a nonlocal lattice action for fermions fermion doubling in
lattice theories. It is shown, that it is possible to avoid the fermionic
doubling in the case of free fermions, but this approach does not reproduce
results for the effective action for gauge fields in the continuum theory,
because the high frequen... | 1994-12-05 | 2009-09-25 | [
"hep-lat"
] | V.M. Belyaev |
hep-lat/9412023 | Finite ma corrections for sea quark matrix elements | We discuss the finite $ma$ corrections associated with the computation of sea
quark matrix elements. We find them to differ from the standard normalization
used for valence quarks and to depend strongly on the Lorentz structure of the
current under consideration. Phenomenological implications of these results are
brief... | 1994-12-05 | 2009-10-28 | [
"hep-lat"
] | J.-F. Lagae and K.-F. Liu |
hep-lat/9412024 | Quenched QED on a momentum space lattice | We discuss the advantages of using the momentum space lattice method for
studying the phase diagram of quenched QED_4. Preliminary results of a
numerical simulation are presented. They indicate that the method avoids the
contamination by 4-fermi interactions which plagues the conventional position
space non-compact for... | 1994-12-05 | 2009-10-28 | [
"hep-lat"
] | J.B. Kogut and J.-F. Lagae |
hep-lat/9412029 | Four-quark energies in SU(2) lattice Monte Carlo using a tetrahedral
geometry | This contribution -- a continuation of earlier work -- reports on recent
developments in the calculation and understanding of 4-quark energies generated
using lattice Monte Carlo techniques. | 1994-12-05 | 2008-11-26 | [
"hep-lat"
] | A.M.Green, J. Lukkarinen, P. Pennanen, C.Michael and S.Furui |
hep-lat/9412030 | Topological Updating Schemes: A Case Study In 3-d U(1) | We study a topological updating scheme in three dimensional U(1) gauge
theory. Some expectations for four dimensional SU(N) gauge theories are
discussed. | 1994-12-05 | 2009-10-28 | [
"hep-lat"
] | Arjan Hulsebos and Peer Ueberholz |
hep-lat/9412026 | String tension and monopoles in $T \neq 0$ SU(2) QCD | Monopole and photon contributions to abelian Wilson loops are calculated
using Monte-Carlo simulations of finite-temperature $SU(2)$ QCD in the
maximally abelian gauge. The string tension is reproduced by monopole
contribution alone also in finite temperature SU(2) QCD. The spatial string
tension scales as $\sqrt{\sigm... | 1994-12-05 | 2009-10-28 | [
"hep-lat"
] | Shinji Ejiri, Shun-ichi Kitahara, Yoshimi Matsubara and Tsuneo Suzuki |
hep-lat/9412027 | New algorithm for gauge fixing in SU(2) lattice gauge theory | An overrelaxed variant of simulated annealing is applied to the problem of
maximally abelian gauge fixing. The superiority of this algorithm over the
commonly used relaxation procedure is demonstrated. Biases on non gauge
invariant quantities due to gauge fixing ambiguities are discussed. | 1994-12-05 | 2009-10-28 | [
"hep-lat"
] | G.S. Bali, V. Bornyakov, M. M\"uller-Preussker and F. Pahl |
hep-lat/9412025 | Scalar and axial vector matrix elements of proton in quenched QCD:
Calculation of both connected and disconnected contributions | $\pi$-$N$ $\sigma$ term and proton axial vector matrix elements are
calculated including disconnected contributions with a variant wall source
method using the Wilson quark action at $\beta=5.7$ in quenched QCD. For the
$\sigma$ term, we find $\sigma_{disc}/\sigma_{conn}=2.35(46)$ and
$\sigma=44(6)$MeV--60(9)MeV. The f... | 1994-12-05 | 2009-10-28 | [
"hep-lat"
] | M. Fukugita, Y. Kuramashi, M. Okawa and A. Ukawa |
hep-lat/9412028 | Fermion-Fermion Scattering in the Gross-Neveu Model - a Status Report | Encouraged by the successful applications of L\"uscher's method to
boson--boson scattering we discuss the possibility of extracting scattering
phase shifts from finite--volume energies for fermion--fermion scattering in
the Gross--Neveu model. | 1994-12-05 | 2009-10-28 | [
"hep-lat"
] | M. Gockeler, H.A. Kastrup, J. Viola and J. Westphalen |
hep-lat/9412031 | Anisotropic Gauge Theories: A Numerical Study of the Fu-Nielsen Model | We study numerically 4+1 dimensional pure gauge theory. | 1994-12-05 | 2016-08-31 | [
"hep-lat"
] | Arjan Hulsebos |
hep-lat/9412032 | The QCD Spectrum | Recent results in light hadron spectroscopy are reviewed. Attention is given
to the requirements of precision determinations in lattice gauge theory.
Different methods for extracting the running coupling constant $\alpha_S$ are
compared. Some recent results in determining the nature of the interaction
between static qu... | 1994-12-05 | 2008-11-26 | [
"hep-lat",
"hep-ph"
] | Chris Michael |
hep-lat/9412022 | How to Accurately Extract the Running Coupling of QCD from Lattice
Potential Data | By (a) using an expression for the LATTICE potential of QCD in terms of a
CONTINUUM running coupling and (b) globally parameterizing this coupling to
interpolate between 2- (or higher-) loop QCD in the UV and the flux tube
prediction in the IR, we can perfectly fit lattice data for the potential down
to ONE lattice spa... | 1994-12-04 | 2009-10-28 | [
"hep-lat"
] | Timothy R. Klassen (Cornell University) |
hep-lat/9412020 | Structure of flux tube in SU(2) lattice gauge theory | The structure of the flux tube is studied in $SU(2)$ QCD from the standpoint
of the abelian projection theory. It is shown that the flux distributions of
the orthogonal electric field and the magnetic field are produced by the effect
that the abelian monopoles in the maximally abelian (MA) gauge are expelled
from the s... | 1994-12-03 | 2009-10-28 | [
"hep-lat"
] | Hiroshi Shiba |
hep-lat/9412014 | A lattice study of the quark propagator and vertex function | We report on the status of a study of the quark propagator and quark-gluon
vertex in momentum space. Quark propagators have been generated at beta=6.0
using the O(a)-improved Sheikholeslami-Wohlert action and fixed to the Landau
gauge. The first results for the quark pole mass and field renormalisation
constant are rep... | 1994-12-02 | 2009-10-28 | [
"hep-lat"
] | Jon Ivar Skullerud |
hep-lat/9412018 | Color Flux Profiles in SU(2) Lattice Gauge Theory | Results of a high statistics study of chromo field distributions around
static sources in pure SU(2) gauge theory on lattices of volumes $16^4$,
$32^4$, and $48^3\times 64$ at $\beta=2.5$, $2.635$, and $2.74$ are presented.
We establish string formation up to physical distances as large as 2 fm. | 1994-12-02 | 2009-10-28 | [
"hep-lat"
] | Ch. Schlichter, G. S. Bali, K. Schilling |
hep-lat/9412013 | A Lattice Study of Semi-leptonic Decays of $D$-Mesons | We present results of a lattice computation of the matrix elements of the
vector and axial-vector currents which are relevant for the semi-leptonic
decays $D \rightarrow K$ and $D \rightarrow K^*$. The computations are
performed in the quenched approximation to lattice QCD on a $24^3 \times 48$
lattice at $\beta=6.2$ u... | 1994-12-02 | 2009-10-28 | [
"hep-lat",
"hep-ph"
] | Juan M. Nieves (for the UKQCD Collaboration) |
hep-lat/9412015 | The Coulomb-Higgs transition of the three-parameter U(1)-Higgs model | We find a first order Coulomb--Higgs phase transition at moderately large
values of the coupling $\lambda$, and no evidence for a change of order at any
finite value of it. | 1994-12-02 | 2009-10-28 | [
"hep-lat"
] | A. Cruz, D.Iniguez, A. Tarancon, L.A. Fernandez, A. Munoz Sudupe |
hep-lat/9412016 | Sphaleron transition rate at high temperature in the 1+1 D abelian Higgs
model | New results for the rate are presented using the canonical ensemble in the
classical approximation on a spatial lattice. We find that the rate at high
temperatures is proportional to $T^2$, and strongly dependent on the lattice
spacing $a$. We conclude that a better effective action is needed for the
classical approxim... | 1994-12-02 | 2009-10-28 | [
"hep-lat",
"hep-ph"
] | Jan Smit and Wai Hung Tang |
hep-lat/9412012 | Nature of the finite temperature transition in QCD with strange quark | The finite temperature transition in QCD is studied using Wilson quarks for
the cases of $N_F=2$, 3 and 2+1. For $N_F=2$ the transition is smooth in the
chiral limit on both $\nt=4$ and 6 lattices. For $N_F=3$, clear two state
signals are observed for $\beta\leq4.7$ on $8^2\times10 \times4$ and
$12^3\times4$ lattices, ... | 1994-12-02 | 2009-10-28 | [
"hep-lat",
"astro-ph",
"nucl-th"
] | Y. Iwasaki, K. Kanaya, S. Kaya, S. Sakai, and T. Yoshi\'e |
hep-lat/9412021 | Towards the continuum limit with quenched staggered quarks | We extend previous work on finite-size effects with dynamical staggered
quarks to the quenched approximation. We again emphasize the large volume limit
that is of interest for spectrum calculations which may hope to approach the
experimental values. Relying on new calculations at $6/g^2=5.7$ and recent work
with weaker... | 1994-12-02 | 2009-10-28 | [
"hep-lat"
] | Steven Gottlieb |
hep-lat/9412017 | On $T$ dependence of the static potential $V(T;{\vec R})$ in a finite
volume | We study the dependence on $T$ of the static potential $V(T;{\vec R})$
defined from Wilson loops and from Polyakov loop correlators on a finite
lattice. For this study we employ a simple model with confinement, and compare
with MC results. | 1994-12-02 | 2010-11-01 | [
"hep-lat"
] | G.~Cella, V.K.~Mitrjushkin and A.~Vicer\'e |
hep-lat/9412019 | Spin Chains and Chiral Lattice Fermions | The generalization of Lorentz invariance to solvable two-dimensional lattice
fermion models has been formulated in terms of Baxter's corner transfer matrix.
In these models, the lattice Hamiltonian and boost operator are given by
fermionized nearest-neighbor Heisenberg spin chain operators. The
transformation propertie... | 1994-12-02 | 2009-10-28 | [
"hep-lat",
"hep-th"
] | H. B. Thacker |
hep-lat/9412006 | Recent progress in the theory of random surfaces and simplicial quantum
gravity | Some of the recent developments in the theory of random surfaces and
simplicial quantum gravity is reviewed. For 2d quantum gravity this includes
the failure of Regge calculus, our improved understanding of the $c>1$ regime,
some surprises for q-state Potts models with $q > 4$, attempts to use
renormalization group tec... | 1994-12-01 | 2009-10-28 | [
"hep-lat",
"gr-qc",
"hep-th"
] | Jan Ambjorn |
hep-lat/9412010 | Finite temperature QCD: progress and outstanding problems | I review recent progress in numerical simulations of finite temperature
quantum chromodynamics and discuss the status of some outstanding problems.
Included is (1) a discussion of recent results determining the temperature of
the ``phase transition'' in full QCD, (2) a scaling analysis of the Polyakov
loop variable, le... | 1994-12-01 | 2008-11-26 | [
"hep-lat"
] | C. DeTar (University of Utah) |
hep-lat/9412002 | Spin dependent potentials from SU(2) gauge theory | We present results on spin dependent potentials from lattice simulations of
SU(2) gauge theory. The Coulomb like short range part of the central potential
is identified as a mixed vector-scalar exchange while the linear long range
part is pure scalar. | 1994-12-01 | 2010-11-01 | [
"hep-lat"
] | G.S. Bali, K. Schilling, A. Wachter |
hep-lat/9412001 | Phase Transitions in lattice QED | The main objective of the work presented here is to understand the appearance
of phase transitions in pure gauge and scalar lattice QED. Main results are as
follows: Pure gauge compact QED with PBC shows a monopole percolation phenomena
coupled to the monopole condensation. Pure gauge compact QED with Fixed
Boundary Co... | 1994-12-01 | 2009-10-28 | [
"hep-lat"
] | M. Baig |
hep-lat/9412007 | Nucleon masses in strong magnetic fields | We compute the variation of the masses of the proton and the neutron induced
by the presence of a strong external magnetic field. We discuss the choice of
the wave function and different techniques how to apply the magnetic field. The
results obtained from a 24 16^2 8 and a 16^2 8^2 lattice are compared with a
phenomen... | 1994-12-01 | 2009-10-28 | [
"hep-lat"
] | H.R. Rubinstein, S. Solomon and T. Wittlich |
hep-lat/9412009 | Structural Properties of the Lattice Heavy Quark Effective Theory | We discuss two related aspects of the lattice version of the heavy quark
effective theory (HQET). They are the effects of heavy quark modes with large
momenta, near the boundary of the Brillouin zone, and the renormalization of
the lattice HQET. We argue that even though large momentum modes are present,
their contribu... | 1994-12-01 | 2009-10-28 | [
"hep-lat",
"hep-ph"
] | Jeffrey E. Mandula and Michael C. Ogilvie |
hep-lat/9412011 | Decays rates for S- and P-wave bottomonium | We use the Bodwin-Braaten-Lepage factorization scheme to separate the long-
and short-distance factors that contribute to the decay rates of $\Upsilon$,
$\eta_b$ (S-wave) and $\chi_b$,$h_b$ (P-wave). The long distance matrix
elements are calculated on the lattice in the quenched approximation using a
non-relativistic f... | 1994-12-01 | 2008-11-26 | [
"hep-lat"
] | G.T. Bodwin, S. Kim, D.K. Sinclair |
hep-lat/9412003 | Polyakov loop and spin correlators on finite lattices A study beyond the
mass gap | We derive an analytic expression for point-to-point correlation functions of
the Polyakov loop based on the transfer matrix formalism. For the $2d$ Ising
model we show that the results deduced from point-point spin correlators are
coinciding with those from zero momentum correlators. We investigate the
contributions fr... | 1994-12-01 | 2009-10-28 | [
"hep-lat"
] | J.~Engels, V. K.~Mitrjushkin, and T.~Neuhaus |
hep-lat/9412005 | Pseudoscalar correlators and the problem of the chiral limit in the
compact lattice QED with Wilson fermions | The phase diagram for the compact lattice QED with Wilson fermions is shown.
We discuss different methods for the calculation of the 'pion' mass $m_{\pi}$
near the chiral transition point $\kappa_c(\beta )$. | 1994-12-01 | 2009-10-28 | [
"hep-lat"
] | A. Hoferichter, V.K. Mitrjushkin and M. M\"uller-Preussker |
hep-lat/9412008 | Dynamical fermion simulations using Luescher's local bosonic action
algorithm | The two-flavour Schwinger model is used to test the local boson action
algorithm of M Luescher. The autocorrelation time is found to rise linearly
with the number of auxiliary boson fields. An extension to the algorithm is
proposed which exactly reproduces the full dynamical partition function for any
number of boson f... | 1994-12-01 | 2009-10-28 | [
"hep-lat"
] | Mike Peardon |
hep-lat/9412004 | Extrapolation Methods for the Dirac Inverter in Hybrid Monte Carlo | In Hybrid Monte Carlo(HMC) simulations for full QCD, the gauge fields evolve
smoothly as a function of Molecular Dynamics (MD) time. Thus we investigate
improved methods of estimating the trial solutions to the Dirac propagator as
superpositions of the solutions in the recent past. So far our best
extrapolation method ... | 1994-12-01 | 2009-10-28 | [
"hep-lat"
] | R.C. Brower, A.R. Levi and K. Orginos |
hep-lat/9411086 | Update on the lattice calculation of $B \to K^* \gamma$ | We summarise our current results for calculations of the form factors for $B
\to K^* \gamma$, and their extrapolation to the physical b-quark mass. | 1994-11-30 | 2010-11-01 | [
"hep-lat"
] | Brian Gough (for the UKQCD Collaboration) |
hep-lat/9411084 | Dynamical fermion mass generation by strong gauge interaction shielded
by a scalar field | The strongly coupled lattice gauge models with confined fermion and scalar
matter fields, which in a certain phase break dynamically a global chiral
symmetry, are reconsidered from the point of view of the existence of heavy
fermions. If these models are interpreted as describing a new strong force
beyond the standard ... | 1994-11-30 | 2009-10-28 | [
"hep-lat",
"hep-th"
] | Christoph Frick and Jiri Jersak |
hep-lat/9411083 | APE Results of Hadron Masses in Full QCD Simulations | We present numerical results obtained in full QCD with 2 flavors of Wilson
fermions. We discuss the relation between the phase of Polyakov loops and the
{\bf sea} quarks boundary conditions. We report preliminary results about the
HMC autocorrelation of the hadronic masses, on a $16^3 \times 32$ lattice
volume, at $\be... | 1994-11-30 | 2019-08-17 | [
"hep-lat"
] | S. Antonelli, A. Bartoloni, C. Battista, M. Bellacci, S. Cabasino,
N.Cabibbo, L.A. Fernandez, E. Panizzi, P.S.Paolucci, A.Munoz-Sudupe,
J.J.Ruiz-Lorenzo, R.Sarno, A.Tarancon, G.M.Todesco, M.Torelli, P.Vicini |
hep-lat/9411085 | The SU(3) running coupling from lattice gluons | We provide numerical results for the running coupling in $SU(3)$ Yang-Mills
theory as determined from an analysis of lattice two and three-point gluon
correlation functions. The coupling is evaluated directly, from first
principles, by defining suitable renormalisation constants from the lattice
triple gluon vertex and... | 1994-11-30 | 2007-05-23 | [
"hep-lat"
] | D.S. Henty and C. Parrinello |
hep-lat/9411082 | Heavy Baryon Spectroscopy | We present the preliminary results of an exploratory study of heavy baryon
spectroscopy, using the $O(a)$-improved fermionic action. Estimates of masses
and splittings at the charm and beauty physical limit are reported. | 1994-11-30 | 2007-05-23 | [
"hep-lat"
] | Nicoletta Stella (for the UKQCD Collaboration) |
hep-lat/9411081 | On the reliable measurement of the gluon condensate in lattice QCD | We propose to calculate the gluon condensate in lattice QCD in an indirect
way by extracting it from the correlator of hadronic currents of heavy quarks.
Moments (derivatives with respect to momentum at vanishing momentum) of the
vector and pseudoscalar correlators are evaluated. The contribution of the
continuum spect... | 1994-11-30 | 2009-10-28 | [
"hep-lat",
"hep-ph"
] | Alexander Bochkarev |
hep-lat/9411087 | NRQCD and Static Systems -- A General Variational Approach | We present initial results from Monte Carlo simulations of NRQCD-light,
static-light, and NRQCD-NRQCD mesons, using a variational technique (MOST), as
part of our ongoing calculation of the $f_{B}$ decay constant. The basis states
for the variational calculation are quark-antiquark operators separated by all
possible r... | 1994-11-30 | 2008-11-26 | [
"hep-lat"
] | Terrence Draper, Craig McNeile and Constantine Nenkov |
hep-lat/9411074 | Dynamical Scaling from Multi-Scale Measurements | We present a new measure of the Dynamical Critical behavior: the "Multi-scale
Dynamical Exponent (MDE)" | 1994-11-29 | 2009-10-28 | [
"hep-lat",
"cond-mat"
] | N. Persky, R. Ben-Av and S. Solomon |
hep-lat/9411080 | Preliminary heavy-light decay constants from the MILC collaboration | Preliminary results from the MILC collaboration for $f_B$, $f_{B_s}$, $f_D$,
$f_{D_s}$ and their ratios are presented. We compute in the quenched
approximation at $\beta=6.3$, 6.0 and 5.7 with Wilson light quarks and static
and Wilson heavy quarks. We attempt to quantify systematic errors due to finite
volume, finite l... | 1994-11-29 | 2008-11-26 | [
"hep-lat",
"hep-ph"
] | C. Bernard, T. Blum, A. De, T. DeGrand, C. DeTar, Steven Gottlieb,
U.M. Heller, N. Ishizuka, L. K\"arkk\"ainen, J. Labrenz, A. Soni, R. Sugar,
and D. Toussaint |
hep-lat/9411078 | Ordered vs Disordered: Correlation Lengths of 2D Potts Models at \beta_t | We performed Monte Carlo simulations of two-dimensional $q$-state Potts
models with $q=10,15$, and $20$ and measured the spin-spin correlation function
at the first-order transition point $\beta_t$ in the disordered and ordered
phase. Our results for the correlation length $\xi_d(\beta_t)$ in the
disordered phase are c... | 1994-11-29 | 2009-10-28 | [
"hep-lat",
"cond-mat"
] | Wolfhard Janke and Stefan Kappler |
hep-lat/9411079 | Regge's space-time skeletons and the quantization of 2d gravity | Regge's method for regularizing euclidean quantum gravity is applied to two
dimensional gravity. Using topologies with genus zero and two and a scale
invariant measure, we show that the Regge method fails to reproduce the values
of the string susceptibilities of the continuum model. | 1994-11-29 | 2009-10-28 | [
"hep-lat"
] | Wolfgang Bock |
hep-lat/9411072 | Chiral transition in a strongly coupled fermion-gauge-scalar model | We report the recent results from the computer simulations of a
fermion-gauge-scalar model with dynamical chiral-symmetry breaking and chiral
transition induced by the scalar field. This model might be considered to be a
possible alternative to the Higgs mechanism of mass generation. A new scheme is
developed for detec... | 1994-11-29 | 2015-06-25 | [
"hep-lat"
] | Xiang-Qian Luo and Wolfgang Franzki |
hep-lat/9411076 | U(1) flux tube profiles from Hamiltonian lattice gauge theory using a
random walk ground-state projector | We use a self-guided random walk to solve the ground-state problem of
Hamiltonian U(1) pure gauge theory in 2+1 dimensions in the string sector. By
making use of the electric-field representation, we argue that the spatial
distribution of the electric field can be more easily measured than in ordinary
Monte Carlo simul... | 1994-11-29 | 2009-10-28 | [
"hep-lat"
] | Christoph Best and Andreas Sch\"afer |
hep-lat/9411075 | New Results From UKQCD Using the Cray T3D: Measuring Gluonic Observables | We report on a set of simulations performed at several values of the lattice
spacing on the Cray T3D at Edinburgh. Different methods to extract the lattice
scale from the static quark potential are discussed. | 1994-11-29 | 2007-05-23 | [
"hep-lat"
] | Hartmut Wittig (for the UKQCD Collaboration) |
hep-lat/9411068 | Perfect topological charge for asymptotically free theories | The classical equations of motion of the perfect lattice action in
asymptotically free $d=2$ spin and $d=4$ gauge models possess scale invariant
instanton solutions. This property allows the definition of a topological
charge on the lattice which is perfect in the sense that no topological defects
exist. The basic cons... | 1994-11-29 | 2009-10-28 | [
"hep-lat"
] | M. Blatter, R. Burkhalter, P. Hasenfratz and F. Niedermayer |
hep-lat/9411071 | Spectrum and scaling in a strongly coupled fermion-gauge-scalar model | The strongly coupled lattice gauge models show an interesting mechanism of
dynamical mass generation. If a suitable continuum limit can be found, one may
think of it as an alternative to the Higgs mechanism. We present data on the
spectrum, obtained in the model with U(1) gauge symmetry with dynamical
fermions. They in... | 1994-11-29 | 2016-08-31 | [
"hep-lat"
] | Wolfgang Franzki and Xiang-Qian Luo |
hep-lat/9411073 | The Microscopic Representation of Complex Macroscopic Phenomena
(Critical Slowing Down - A Blessing in Disguise) | Many complex systems are representable as macroscopic set of elements which
interact by simple rules. The complex macroscopically relevant phenomena are
then the result of the generic emergence of a space-time multi-scale dynamics.
Critical Slowing Down labels the emerging global features and describes their
complex co... | 1994-11-29 | 2016-11-03 | [
"hep-lat"
] | Sorin Solomon |
hep-lat/9411069 | Which Higgs-Yukawa systems can possess non-trivial fixed points | We argue that non-trivial fixed points bordering on the paramagnetic and
ferromagnetic phases are most likely to exist in the Higgs-Yukawa systems that
have a connected domain with the paramagnetic phase and no ferrimagnetic phase.
We find three examples of such systems; among them is the U(1) system with
naive fermion... | 1994-11-29 | 2009-10-28 | [
"hep-lat"
] | Sergei V. Zenkin |
hep-lat/9411070 | Absence of barriers in dynamical triangulation | Due to the unrecognizability of certain manifolds there must exist pairs of
triangulations of these manifolds that can only be reached from each other by
going through an intermediate state that is very large. This might reduce the
reliability of dynamical triangulation, because there will be states that will
not be re... | 1994-11-29 | 2009-10-28 | [
"hep-lat",
"gr-qc"
] | Bas V. de Bakker |
hep-lat/9411077 | Multibondic Cluster Algorithm | Inspired by the multicanonical approach to simulations of first-order phase
transitions we propose for $q$-state Potts models a combination of cluster
updates with reweighting of the bond configurations in the
Fortuin-Kastelein-Swendsen-Wang representation of this model. Numerical tests
for the two-dimensional models w... | 1994-11-29 | 2011-07-19 | [
"hep-lat",
"cond-mat"
] | Wolfhard Janke and Stefan Kappler |
hep-lat/9411061 | Roma versus Zaragoza | The Roma and Zaragoza actions for chiral fermions on the lattice are shown to
be essentially equivalent. The auxiliary fermion fields in the Roma model can
be integrated out, and the resulting action is a special case of the Zaragoza
approach. We use this result to perform a mean-field study of the phase diagram
of chi... | 1994-11-28 | 2010-03-19 | [
"hep-lat"
] | J.L. Alonso, Ph. Boucaud, F. Lesmes and A.J. van der Sijs |
hep-lat/9411066 | B Physics From NRQCD With Dynamical Fermions | We present {\it preliminary} results for the spectrum and decay constants of
B mesons using NRQCD heavy and Wilson light quarks on configurations at
$\beta=5.6$ with two dynamical flavours of staggered fermions. All terms to
order $1/M_Q$ are included in the NRQCD action; matrix elements are corrected
to this order by ... | 1994-11-28 | 2010-11-01 | [
"hep-lat"
] | A. Ali Khan, S. Collins, C. T. H. Davies, U. M. Heller, J. Shigemitsu,
J. H. Sloan |
hep-lat/9411067 | Quark Model from Lattice QCD | We study the valence approximation in lattice QCD of hadrons where the cloud
quarks and antiquarks are deleted by truncating the backward time propagation
(Z graphs) in the connected insertions. Whereas, the sea quarks are eliminated
via the quenched approximation and in the disconnected insertions. It is shown
that th... | 1994-11-28 | 2009-09-25 | [
"hep-lat",
"hep-ph"
] | Keh-Fei Liu and Shao-Jing Dong |
hep-lat/9411064 | Two-Dimensional $O(3)$ $\sigma$-Model up to Correlation Length $10^5$ | We carry out a high-precision Monte Carlo simulation of the two-dimensional
$O(3)$-invariant $\sigma$-model at correlation lengths $\xi$ up to $\sim 10^5$.
Our work employs a new and powerful method for extrapolating finite-volume
Monte Carlo data to infinite volume, based on finite-size-scaling theory. We
compare the ... | 1994-11-28 | 2009-10-28 | [
"hep-lat"
] | Sergio Caracciolo, Robert G. Edwards, Andrea Pelissetto and Alan D.
Sokal |
hep-lat/9411060 | The Width of the Colour Flux Tube | We discuss and rederive in a general way the logarithmic growth of the mean
squared width of the colour flux tube as a function of the interquark
separation. Recent data on 3D $Z_2$ gauge theory, combined with high precision
data on the interface physics of the 3D Ising model fit nicely this behaviour
over a range of m... | 1994-11-28 | 2009-10-28 | [
"hep-lat"
] | M. Caselle, F. Gliozzi, U. Magnea and S. Vinti |
hep-lat/9411059 | Gauge theory of things alive and universal dynamics | Positing complex adaptive systems made of agents with relations between them
that can be composed, it follows that they can be described by gauge theories
similar to elementary particle theory and general relativity. By definition, a
universal dynamics is able to determine the time development of any such system
withou... | 1994-11-28 | 2008-02-03 | [
"hep-lat",
"chao-dyn",
"cond-mat",
"gr-qc",
"hep-ph",
"hep-th",
"nlin.CD",
"q-bio"
] | G. Mack |
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