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 |
|---|---|---|---|---|---|---|
hep-lat/9312084 | Spontaneous Breaking of Flavor Symmetry and Parity in the
Nambu-Jona-Lasinio Model with Wilson Fermions | We study the lattice \njl~model with two flavors of Wilson fermions in the
large $N$ limit, where $N$ is the number of `colors'. For large values of the
four-fermion coupling we find a phase in which both, flavor symmetry and
parity, are spontaneously broken. In accordance with general expectations there
are three mass... | 1993-12-27 | 2009-10-22 | [
"hep-lat"
] | S. Aoki, S. Boettcher and A. Gocksch |
hep-lat/9312083 | Series studies of the Potts model. III: The 3-state model on the simple
cubic lattice | The finite lattice method of series expansion has been used to extend
low-temperature series for the partition function, order parameter and
susceptibility of the $3$-state Potts model on the simple cubic lattice to
order $z^{43}$ and the high-temperature expansion of the partition function to
order $v^{21}$. We use th... | 1993-12-24 | 2009-10-22 | [
"hep-lat",
"cond-mat"
] | A J Guttmann and I G Enting (Department of Mathematics, The University
of Melbourne, Australia. CSIRO, Division of Atmospheric Research, Australia) |
hep-lat/9312082 | Series studies of the Potts model. II: Bulk series for the square
lattice | The finite lattice method of series expansion has been used to extend
low-temperature series for the partition function, order parameter and
susceptibility of the $q$-state Potts model to order $z^{56}$ (i.e. $u^{28}$),
$z^{47}$, $z^{43}$, $z^{39}$, $z^{39}$, $z^{39}$, $z^{35}$, $z^{31}$ and
$z^{31}$ for $q = 2$, 3, 4,... | 1993-12-24 | 2009-10-22 | [
"hep-lat",
"cond-mat"
] | K M Briggs, I G Enting, and A J Guttmann (Department of Mathematics,
The University of Melbourne, Parkville, Vic. Australia 3052. CSIRO Division
of Atmospheric Research Private Bag 1, Mordialloc, Vic. Australia) |
hep-lat/9312081 | Quenched Staggered Spectrum at Beta=6.0, 6.2 and 6.4 | We give a preliminary report on the hadron spectrum on an ensemble of
quenched lattices at $\beta$ values of 6.0, 6.2 and 6.4, using staggered
fermions and collaborators Rajan Gupta and Steve Sharpe. Because of the
relatively small number of configurations we pay marginally more attention to
the question of statistics ... | 1993-12-22 | 2009-10-22 | [
"hep-lat"
] | Greg Kilcup |
hep-lat/9312080 | The Strong Coupling from Quarkonia | The status of determinations of $\al_s$ from quarkonia using lattice QCD is
reviewed. We compare the results with those obtained from perturbative QCD. | 1993-12-21 | 2010-11-19 | [
"hep-lat",
"hep-ph"
] | Aida X. El-Khadra |
hep-lat/9312077 | Gauge Invariance and Confinement in Noncompact Simulations of SU(2) | Wilson loops have been measured at strong coupling, $\beta=0.5$, on a $12^4$
lattice in a noncompact simulation of pure SU(2) in which random compact gauge
transformations impose a kind of lattice gauge invariance. The Wilson loops
suggest a confining potential. | 1993-12-20 | 2009-10-22 | [
"hep-lat"
] | Kevin Cahill |
hep-lat/9312079 | On the Schroedinger functional in QCD | In a series of publications [\ref{LNWW},\ref{Schroedinger}], L\"uscher et al.
have demonstrated the usefulness of the Schr\"odinger functional in pure SU(2)
and SU(3) gauge theory. In this paper, it is shown how their formalism can be
extended to include fermions. In the framework of Wilson's lattice QCD, we
define the... | 1993-12-20 | 2016-08-31 | [
"hep-lat"
] | Stefan Sint |
hep-lat/9312078 | Computing Masses and Surface Tension from Effective Transfer Matrices | We propose an effective transfer-matrix method that allows a measurement of
tunnelling correlation lengths that are orders of magnitude larger than the
lattice extension. Combining this method with a particularly efficient
implementation of the multimagnetical algorithm we were able to determine the
interface tension o... | 1993-12-20 | 2009-10-22 | [
"hep-lat"
] | M. Hasenbusch, K. Rummukainen and K. Pinn |
hep-lat/9312076 | A Universal Fractal Structure of 2D Quantum Gravity for c > 1 | We investigate the fractal structure of $2d$ quantum gravity coupled to
matter by measuring the distributions of so-called baby universes. We
demonstrate that the method works well as long as $c \leq 1$. For $c >1$ it is
not clear what distribution to expect. However, we observe strikingly similar
distributions for var... | 1993-12-19 | 2015-06-25 | [
"hep-lat"
] | J. Ambjorn and G. Thorleifsson |
hep-lat/9312074 | A Possible Origin of the Wilson Lattice Fermion | Considering relevant and irrelevant high-dimension operators for ordinary and
mirror fermions respectively, we show that the Wilson lattice fermion can
originate from a spontaneous symmetry breaking phenomenon. Ward identities, due
to symmetries at the cutoff, guarantee the cancellation of mirror-fermion
contributions ... | 1993-12-19 | 2016-08-31 | [
"hep-lat",
"hep-th"
] | She-Sheng XUE |
hep-lat/9312075 | A pot-pourri of results in QCD from large lattice simulations on the CM5 | We present a status report on simulations being done on $32^3 \times 64$
lattices at $\beta = 6.0$ using quenched Wilson fermions. Results for the
spectrum, decay constants, the kaon B-parameter $B_K$, and semi-leptonic form
factors are given based on the current statistical sample of 28 configurations.
These ``Grand C... | 1993-12-19 | 2010-05-27 | [
"hep-lat"
] | Tanmoy Bhattacharya and Rajan Gupta |
hep-lat/9312073 | Complex wave function, Chiral spin order parameter and Phase Problem | We study the two dimensional Hubbard model by use of the ground state
algorithm in the Monte Carlo simulation. We employ complex wave functions as
trial function in order to have a close look at properties such as chiral spin
order ($\chi$SO) and flux phase. For half filling, a particle-hole
transformation leads to sum... | 1993-12-18 | 2017-02-01 | [
"hep-lat"
] | Masahiro IMACHI and Hiroshi YONEYAMA |
hep-lat/9312072 | The Method of Recursive Counting: Can One Go Further? | After a short review of the Method of Recursive Counting we introduce a
general algebraic description of recursive lattice building. This provides a
rigorous framework for discussion of method's limitations. | 1993-12-17 | 2009-10-22 | [
"hep-lat"
] | M. Creutz, I. Horvath and R. Mendris |
hep-lat/9312068 | Surface modes and chiral symmetry (Wilson Fermions in a box) | We give a Hamiltonian discussion of surface states in an extra dimension as a
basis for chiral fermions in lattice models. Such modes appear with the Wilson
fermion action when the hopping parameter exceeds a critical value. The
association of such states with the closing and reopening of a band gap was
noted by Shockl... | 1993-12-17 | 2009-10-22 | [
"hep-lat"
] | Michael Creutz and Ivan Horvath |
hep-lat/9312069 | A Non-Abelian Variation on the Savvidy Vacuum of the Yang-Mills Gauge
Theory | As a prelude to a truly non-perturbative evaluation of the effective
potential in terms of lattice QCD, the one loop effective potential for a
non-Abelian gauge configuration is calculated using the background field
method. Through a non-trivial correlation between the space and color
orientations the new background fi... | 1993-12-17 | 2009-10-22 | [
"hep-lat"
] | Suzhou Huang and A.R.Levi |
hep-lat/9312070 | Precision $\Upsilon$ Spectroscopy and Fundamental Parameters From NRQCD | We present results from a high precision NRQCD simulation of the quenched
$\Upsilon$ system at $\beta = 6$. We demonstrate a variety of important lattice
techniques, including the perturbative improvement of actions, tadpole
improvement, and multicorrelated fits for extracting the spectrum of excited
states. We present... | 1993-12-17 | 2012-08-27 | [
"hep-lat"
] | The NRQCD Collaboration |
hep-lat/9312067 | Quenched Chiral Perturbation Theory for Baryons | We develop quenched chiral perturbation theory for baryons using the
graded-symmetry formalism of Bernard and Golterman and calculate non-analytic
contributions to the baryon masses coming from quenched chiral loops. The usual
term proportional to $m_{q}^{3/2}$ is substantially altered due to the
cancellation of diagra... | 1993-12-17 | 2009-10-22 | [
"hep-lat",
"hep-ph"
] | James N. Labrenz and Stephen R. Sharpe |
hep-lat/9312071 | Evidence for the Role of Instantons in Hadron Structure from Lattice QCD | Cooling is used as a filter on a set of gluon fields sampling the Wilson
action to selectively remove essentially all fluctuations of the gluon field
except for the instantons. The close agreement between quenched lattice QCD
results with cooled and uncooled configurations for vacuum correlation
functions of hadronic c... | 1993-12-17 | 2009-09-25 | [
"hep-lat"
] | M.-C. Chu, J. Grandy, S. Huang, and J. W. Negele |
hep-lat/9312065 | Decay Constants of Heavy-Light Mesons | The decay constants of the heavy-light pseudoscalar mesons are studied in a
high statistics run using the Wilson action at $\beta=6.0$ and $\beta=6.2$, and
the clover action at $\beta=6.0$. The systematics of $O(a)$ discretisation
errors are discussed. Our best estimates of the decay constants are: $f_D$ =
218(9) MeV, ... | 1993-12-16 | 2009-10-22 | [
"hep-lat"
] | APE Collaboration, et al |
hep-lat/9312066 | From Perturbation Theory to Confinement: How the String Tension is built
up | We study the spatial volume dependence of electric flux energies for SU(2)
Yang-Mills fields on the torus with twisted boundary conditions. The results
approach smoothly the rotational invariant Confinement regime. The would-be
string tension is very close to the infinite volume result already for volumes
of $(1.2 \ {\... | 1993-12-16 | 2008-11-26 | [
"hep-lat"
] | Margarita Garcia Perez, Antonio Gonzalez-Arroyo and Pablo Martinez |
hep-lat/9312061 | Damaging 2D Quantum Gravity | We investigate numerically the behaviour of damage spreading in a Kauffman
cellular automaton with quenched rules on a dynamical $\phi^3$ graph, which is
equivalent to coupling the model to discretized 2D gravity. The model is
interesting from the cellular automaton point of view as it lies midway between
a fully quenc... | 1993-12-16 | 2009-10-22 | [
"hep-lat"
] | C.F. Baillie and D.A. Johnston |
hep-lat/9312064 | D- and B-Meson Semi-Leptonic Decays | Recent results for semi-leptonic decays of $D$ and $B$ mesons at $\beta=6.4$,
using the Wilson action, and at $\beta=6.0$, using the Clover action, are
reported. | 1993-12-16 | 2010-03-19 | [
"hep-lat"
] | APE Collaboration, et al |
hep-lat/9312063 | Light Quark Physics on Different Lattices | The light quark results from three different simulations are summarized. We
get consistent results, within our statistics, between smeared and non smeared
data. A comparison is performed with similar results from the UKQCD
collaboration. All runs have been performed on two 6.4 GF APE computers
\cite{tubo}. | 1993-12-16 | 2007-05-23 | [
"hep-lat"
] | APE Collaboration, et al |
hep-lat/9312062 | Sphaleron-Like Processes in a Realistic Heat Bath | We measure the diffusion rate of Chern-Simons number in the (1+1)-dimensional
Abelian Higgs model interacting with a realistic heat bath for temperatures
between 1/13 and 2/3 times the sphaleron energy. It is found that the measured
rate is close to that predicted by the sphaleron approximation at the lower end
of the ... | 1993-12-16 | 2010-11-01 | [
"hep-lat"
] | A. Krasnitz and R. Potting |
hep-lat/9312058 | Baryon-Baryon Potentials on the Lattice | The interaction of spatially extended heavy baryons is investigated in the
framework of lattice QCD with dynamical quarks. It is shown that the expected
dipole forces have a very short range and that the baryon-antibaryon
interaction is more attractive than the baryon-baryon interaction. Sea quarks
play a minor importa... | 1993-12-15 | 2009-10-22 | [
"hep-lat",
"nucl-th"
] | K. Rabitsch, H. Markum, W. Sakuler |
hep-lat/9312059 | Gluon Versus Meson Exchange in Hadron-Hadron Systems on the Lattice | The interaction of spatially extended heavy hadrons is investigated in the
framework of lattice QCD with dynamical quarks. In addition to the
baryon-baryon potential results for the baryon-antibaryon and for the
meson-meson system are presented. It is shown that the expected dipole forces
have a very short range and th... | 1993-12-15 | 2007-05-23 | [
"hep-lat",
"nucl-th"
] | H. Markum, K. Rabitsch and W. Sakuler |
hep-lat/9312060 | Hamiltonian SU(N) Lattice Gauge Theories With Exact Vacuum States In 2+1
Dimensions | We investigate (2+1)-d Hamiltonian lattice gauge theory using a class of
Hamiltonians having exactly known vacuum states. These theories are shown to
have a wide range of possible classical continuum limits which differ from that
of the standard Kogut-Susskind Hamiltonian. This conclusion is at variance with
some previ... | 1993-12-15 | 2009-10-22 | [
"hep-lat"
] | G. Frichter and D. Robson |
hep-lat/9312053 | Two-Point Functions of Four-Dimensional Simplicial Quantum Gravity | We investigate the interaction mechanism of pure quantum gravity in Regge
discretization. We compute volume-volume and link-link correlation functions.
In a preliminary analysis the forces turn out to be of Yukawa type, at least on
our finite lattice being away from the continuum limit. | 1993-12-14 | 2009-10-22 | [
"hep-lat",
"gr-qc"
] | W. Beirl, H. Markum and J. Riedler |
hep-lat/9312056 | On the behaviour of spatial Wilson loops in the high temperature phase
of Lattice Gauge Theories | The behaviour of the space-like string tension in the high temperature phase
is studied. Data obtained in the $Z_2$ gauge model in (2+1) dimensions are
compared with predictions of a simple model of a fluctuating flux tube with
finite thickness. It is shown that in the high temperature phase contributions
coming from t... | 1993-12-14 | 2009-10-22 | [
"hep-lat"
] | M. Caselle, R.Fiore, F. Gliozzi, P. Guaita and S. Vinti |
hep-lat/9312054 | Nonperturbative Studies of Quantum Gravity | We investigate quantum gravity in the path integral formulation using the
Regge calculus. Restricting the quadratic link lengths of the originally
triangular lattice the path integral can be transformed to the partition
function of a spin system with higher couplings on a Kagome lattice. Various
measures acting as exte... | 1993-12-14 | 2007-05-23 | [
"hep-lat",
"gr-qc"
] | Wolfgang Beirl, Harald Markum, Juergen Riedler |
hep-lat/9312057 | The present status of non-compact lattice QED | We give a 1993 update of non-compact lattice QED, in particular the chiral
condensate, finite size effects and meson mass ratios.
We compare descriptions of the phase transition. Our previous conclusions
remain valid. | 1993-12-14 | 2008-11-26 | [
"hep-lat"
] | M. Goeckeler, R. Horsley, P.E.L. Rakow, G. Schierholz and H. Stueben |
hep-lat/9312055 | Two-Dimensional Lattice Gravity as a Spin System | Quantum gravity is studied in the path integral formulation applying the
Regge calculus. Restricting the quadratic link lengths of the originally
triangular lattice the path integral can be transformed to the partition
function of a spin system with higher couplings on a Kagome lattice. Various
measures acting as exter... | 1993-12-14 | 2011-04-15 | [
"hep-lat"
] | W. Beirl, H. Markum and J. Riedler |
hep-lat/9312052 | Interface tension in SU(3) lattice gauge theory at finite temperatures
on an $N_t=2$ lattice | The surface tension $\sigma$ of the confined-deconfined interface is
calculated in pure $SU(3)$ lattice gauge theory at finite temperatures
employing the operator and integral methods on a lattice of a size $8^2\times
N_z\times 2$ with $N_z=16$ and 40. Analyses of non-perturbative corrections in
asymmetry response func... | 1993-12-13 | 2014-11-17 | [
"hep-lat"
] | Yasumichi Aoki and Kazuyuki Kanaya |
hep-lat/9312051 | The Leptonic Decay Constants of $\bar{Q}q$ Mesons and the Lattice
Resolution | We present a high statistics study of the leptonic decay constant $f_P$ of
heavy pseudoscalar mesons using propagating heavy Wilson quarks within the
quenched approximation, on lattices covering sizes from about 0.7~fm to 2~fm.
Varying $\beta$ between 5.74 and 6.26 we observe a sizeable $a$ dependence of
$f_P$ when one... | 1993-12-13 | 2009-10-22 | [
"hep-lat"
] | C. Alexandrou, S. G\"usken, F. Jegerlehner, K. Schilling, G. Siegert,
R. Sommer |
hep-lat/9312050 | QED on a momentum lattice | We investigate the possibility of doing momentum space lattice simulations as
an alternative to the conventional method. The procedure is introduced and
tested for quenched QED2 and quenched QED3. Interesting physical applications
to unquenched QED3 and quenched QED4 are also briefly discussed. | 1993-12-13 | 2009-10-22 | [
"hep-lat"
] | J.B. Kogut and J.-F. Lagae |
hep-lat/9312046 | Masses and Decay Constants of Heavy-Light Mesons Using the Multistate
Smearing Technique | We present results for f_B and masses of low-lying heavy-light mesons.
Calculations were performed in the quenched approximation using multistate
smearing functions generated from a spinless relativistic quark model
Hamiltonian. Beta values range from 5.7 to 6.3, and light quark masses
corresponding to pion masses as l... | 1993-12-10 | 2009-10-22 | [
"hep-lat"
] | Anthony Duncan, Estia Eichten, Jonathan M. Flynn, Brian R. Hill, and
Hank Thacker |
hep-lat/9312048 | Specific Heat Exponent for the 3-d Ising Model from a 24-th Order High
Temperature Series | We compute high temperature expansions of the 3-d Ising model using a
recursive transfer-matrix algorithm and extend the expansion of the free energy
to 24th order. Using ID-Pade and ratio methods, we extract the critical
exponent of the specific heat to be alpha=0.104(4). | 1993-12-10 | 2009-10-22 | [
"hep-lat"
] | G. Bhanot, M. Creutz, U. Glaessner and K. Schilling |
hep-lat/9312049 | Analytical calculation of critical temperatures in some spin systems | A new method for locating analytically critical temperatures is discussed. It
is exact for selfdual systems. When applied the two coupled layers of Ising
spins it deviates from our preliminary Monte Carlo estimates by 1.5 standard
deviations. It predicts critical temperature of the three dimensional Ising
model in term... | 1993-12-10 | 2009-10-22 | [
"hep-lat"
] | Z. Burda and J. Wosiek |
hep-lat/9312047 | Non-Perturbative Renormalisation of Composite Operators | It is shown that the renormalisation constants of two quark operators can be
accurately determined (to a precision of a few per-cent using 18 gluon
configurations) using Chiral Ward identities. A method for computing
renormalisation constants of generic composite operators without the use of
lattice perturbation theory... | 1993-12-10 | 2009-10-09 | [
"hep-lat"
] | C.T.Sachrajda |
hep-lat/9312042 | Renormalization of Massive Lattice Fermions | The renormalization of a general action for massive lattice fermions is
discussed. The analysis applies for all $m_q a$. Preliminary results for the
self energy at one loop in perturbation theory are presented. | 1993-12-09 | 2009-10-22 | [
"hep-lat"
] | A.S. Kronfeld and B.P. Mertens |
hep-lat/9312041 | How well do lattice simulations reproduce the different aspects of the
geometric Schwinger model | We compare continuum and lattice formulation of the geometric Schwinger Model
on the torus. The lattice reproduces the $U(1)_A$ anomaly, related to
non-trivial topological gauge configurations and zero modes. | 1993-12-09 | 2009-10-22 | [
"hep-lat"
] | H. Dilger and H. Joos |
hep-lat/9312039 | Minimal U(1) Gauge Fields in Two Dimensions | Gribov copies of the vacuum in two dimensional compact U(1) lattice gauge
models are constructed. On the basis of this a gauge fixing algorithm is
developped, wich finds the minimum of the sum of link field squares. Numerical
experience in a two dimensional Higgs model with fixed length scalar field is
reported and the... | 1993-12-09 | 2009-10-22 | [
"hep-lat"
] | Istvan Montvay |
hep-lat/9312045 | Adding Gauge Fields to Kaplan's Fermions | We experiment with adding dynamical gauge field to Kaplan (defect) fermions.
In the case of U(1) gauge theory we use an inhomogenous Higgs mechanism to
restrict the 3d gauge dynamics to a planar 2d defect. In our simulations the 3d
theory produce the correct 2d gauge dynamics. We measure fermion propagators
with dynami... | 1993-12-09 | 2009-10-22 | [
"hep-lat"
] | T. Blum and Leo Karkkainen |
hep-lat/9312043 | Multicanonical multigrid Monte Carlo method and effective
autocorellation time | We report tests of the recently proposed multicanonical multigrid Monte Carlo
method for the two-dimensional $\Phi^4$ field theory. Defining an effective
autocorrelation time we obtain real time improvement factors of about one order
of magnitude compared with standard multicanonical simulations. | 1993-12-09 | 2009-10-22 | [
"hep-lat"
] | W. Janke and T. Sauer |
hep-lat/9312044 | An investigation into a wavelet accelerated gauge fixing algorithm | We introduce an acceleration algorithm for coulomb gauge fixing, using the
compactly supported wavelets introduced by Daubechies. The algorithm is similar
to Fourier acceleration. Our provisional numerical results for $SU(3)$ on
$8^{4}$ lattices show that the acceleration based on the DAUB6 transform can
reduce the num... | 1993-12-09 | 2009-10-22 | [
"hep-lat"
] | Terrence Draper and Craig McNeile |
hep-lat/9312040 | Scattering phases in the broken phase of the 4-d O(4) non-linear
sigma-model | Using Luescher's method we determine the elastic scattering phases in the
broken phase of the 4-dimensional O(4) non-linear sigma-model from the
two-particle energy spectrum in a Monte-Carlo study on finite lattices. In the
isospin-0-channel we observe the sigma-resonance and extract its mass and its
width. In all scat... | 1993-12-09 | 2009-10-22 | [
"hep-lat"
] | J. Westphalen, F. Zimmermann, M. Goeckeler and H. A. Kastrup |
hep-lat/9312037 | Computation of the Heavy-Light Decay Constant with NRQCD | Non-relativistic QCD is applied for a lattice computation of the heavy-light
meson decay constant in quenched approximation at $\beta=6.0$. Clear signals
are obtained for the ground state at large times in the correlators, allowing a
reliable extraction of the decay constant. Estimating the current
renormalization fact... | 1993-12-08 | 2009-10-22 | [
"hep-lat"
] | Shoji Hashimoto |
hep-lat/9312036 | Three-point functions in noncompact lattice QED | We calculate fermion-antifermion-"meson" three-point functions in noncompact
lattice QED with dynamical staggered fermions and use them to extract effective
Yukawa couplings. The results are consistent with the hypothesis that QED is
trivial. | 1993-12-08 | 2008-11-26 | [
"hep-lat"
] | M.Goeckeler, R.Horsley, P.E.L. Rakow and G.Schierholz |
hep-lat/9312035 | Glueball Spectra of SU(2) Gauge Theories in 3 and 4 Dimensions: A
Comparison with the Isgur-Paton Flux Tube Model | We use the results of recent lattice calculations to obtain (part of) the
mass spectrum of continuum SU(2) gauge theory in both 2+1 and 3+1 dimensions.
We compare these spectra to the predictions of the Isgur-Paton flux tube model
for glueballs. We use this comparison to test the reliability of different
aspects of the... | 1993-12-08 | 2009-09-25 | [
"hep-lat",
"hep-ph"
] | T. Moretto (NORDITA) and M. Teper (University of Oxford) |
hep-lat/9312038 | Isgur-Wise Function on the Lattice | We review our method and numerical results for calculation of the Isgur-Wise
function on the lattice. We present a discussion of the systematic errors.
Using recent experimental results, we find $V_{cb} = 0.044\pm 0.005\pm .007$.
Contribution to Lattice '93 proceedings. Needs espcrc2.sty file (included after
\end{docum... | 1993-12-08 | 2010-11-01 | [
"hep-lat",
"hep-ph"
] | Claude W. Bernard, Yue Shen and Amarjit Soni |
hep-lat/9312033 | Phase structure and chiral limit of compact lattice QED with Wilson
fermions | We study the phase structure and chiral limit of $4d$ compact lattice QED
with Wilson fermions (both dynamical and quenched). We use the standard Wilson
action (WA) and also the modified action (MA) with some lattice artifacts
suppressed. We show that lattice artifacts influence the distributions of
eigenvalues $~\lamb... | 1993-12-07 | 2009-10-22 | [
"hep-lat"
] | A. Hoferichter, V.K. Mitrjushkin, M. M\"uller-Preussker and Th.
Neuhaus |
hep-lat/9312032 | Hopping Parameter Analysis of Leptonic and Semi-Leptonic Heavy-Light
Decays | We study leptonic and semi-leptonic decays of D and B mesons. Use of the
Hopping Parameter Expansion (HPE) for two-point functions allows us
continuously to vary the pseudoscalar mass from below m_D up towards m_B. We
compute the pseudoscalar decay constants f_D and f_B, and observe consistency
with the value calculate... | 1993-12-07 | 2007-05-23 | [
"hep-lat"
] | D.S. Henty |
hep-lat/9312034 | Structure Functions, Form Factors, and Lattice QCD | We present results towards the calculation of the pion electric form factor
and structure function on a $16^3\times 24$ lattice using charge overlap. By
sacrificing Fourier transform information in two directions, it is seen that
the longitudinal four point function can be extracted with reasonable error
bars at low mo... | 1993-12-07 | 2009-10-22 | [
"hep-lat"
] | Walter Wilcox and B. Andersen-Pugh |
hep-lat/9312029 | Hybrid Monte Carlo simulation of polymer chains | We develop the hybrid Monte Carlo method for simulations of single
off-lattice polymer chains. We discuss implementation and choice of simulation
parameters in some detail. The performance of the algorithm is tested on models
for homopolymers with short- or long-range self-repulsion, using chains with
$16\le N\le 512$ ... | 1993-12-06 | 2009-10-22 | [
"hep-lat"
] | A. Irb\"ack |
hep-lat/9312027 | Aspects of Dynamical Symmetry Breaking on a Lattice | In the context of four-fermion and gauge interactions, the Schwinger-Dyson
equation for the fermion self-energy function is studied with the Wilson
fermion on a lattice. We find that the critical line obtained by Bardeen, Leung
and Love is modified. No additional Goldstone bosons appear in the spectrum of
fundamental p... | 1993-12-06 | 2009-09-25 | [
"hep-lat"
] | She-Sheng XUE |
hep-lat/9312026 | Systematic study of autocorrelation time in pure SU(3) lattice gauge
theory | Results of our autocorrelation measurement performed on Fujitsu AP1000 are
reported. We analyze (i) typical autocorrelation time, (ii) optimal mixing
ratio between overrelaxation and pseudo-heatbath and (iii) critical behavior of
autocorrelation time around cross-over region with high statistic in wide range
of $\beta$... | 1993-12-06 | 2009-10-22 | [
"hep-lat"
] | K. Akemi, Ph. deForcrand, M. Fujisaki, T. Hashimoto, S. Hioki, O.
Miyamura, A. Nakamura, M. Okuda, I.O. Stamatescu, Y. Tago and T. Takaishi |
hep-lat/9312030 | A Variational Approach to the Structure and Thermodynamics of Linear
Polyelectrolytes with Coulomb and Screened Coulomb Interactions | A variational approach is used to calculate free energy and conformational
properties in polyelectrolytes. The true bond and Coulomb potentials are
approximated by a trial isotropic harmonic energy containing monomer-monomer
force constants as variational parameters. By a judicious choice of
representation and the use ... | 1993-12-06 | 2009-09-25 | [
"hep-lat"
] | B. J\"onsson, C. Peterson and B. S\"oderberg |
hep-lat/9312031 | Determination of ${\bf f(\infty)}$ from the Asymptotic Series for ${\bf
f(x)}$ About ${\bf x=0}$ | A difficult and long-standing problem in mathematical physics concerns the
determination of the value of $f(\infty)$ from the asymptotic series for $f(x)$
about $x\!=\!0$. In the past the approach has been to convert the asymptotic
series to a sequence of Pad\'e approximants $\{P^n_n(x)\}$ and then to evaluate
these ap... | 1993-12-06 | 2009-10-22 | [
"hep-lat"
] | C. M. Bender and S. Boettcher |
hep-lat/9312028 | Bosonization and the lattice Gross-Neveu model | We consider a lattice version of the bosonized Gross-Neveu model. It is
explicitely chiral symmetric and its numerical simulation does not involve any
anticommuting field. We study its non trivial $1/N$ expansion up to the
next-to-leading term comparing the results with explicit numerical simulations. | 1993-12-06 | 2011-07-19 | [
"hep-lat"
] | Matteo Beccaria |
hep-lat/9312025 | Locating analytically critical temperature in some statistical systems | We have found a simple criterion which allows for the straightforward
determination of the order-disorder critical temperatures. The method
reproduces exactly results known for the two dimensional Ising, Potts and
$Z(N<5)$ models. It also works for the Ising model on the triangular lattice.
For systems which are not se... | 1993-12-05 | 2009-10-22 | [
"hep-lat"
] | J. Wosiek |
hep-lat/9312024 | Making chiral fermion actions (almost) gauge invariant using Laplacian
gauge fixing | Straight foreward lattice descriptions of chiral fermions lead to actions
that break gauge invariance. I describe a method to make such actions gauge
invariant (up to global gauge transformations) with the aid of gauge fixing. To
make this prescription unambiguous, Laplacian gauge fixing is used, which is
free from Gri... | 1993-12-04 | 2009-10-22 | [
"hep-lat"
] | Jeroen C. Vink |
hep-lat/9312023 | The Finite Temperature Phase Transition in the Lattice SU(2)-Higgs Model | We study the finite temperature transition of SU(2)-Higgs model with lattice
Monte Carlo techniques. We use dimensional reduction to transform the original
4-dimensional SU(2)-gauge + fundamental Higgs theory to an effective
3-dimensional SU(2) + adjoint Higgs + fundamental Higgs model. The simulations
were performed w... | 1993-12-03 | 2009-10-22 | [
"hep-lat"
] | K. Farakos, K. Kajantie, K. Rummukainen and M. Shaposhnikov |
hep-lat/9312019 | On the existence of a first order phase transition at small vacuum angle
$\theta$ in the $CP^3$ model | We examine the phase structure of the $CP^3$ model as a function of $\theta$
in the weak coupling regime. It is shown that the model has a first order phase
transition at small $\theta$. We pay special attention to the extrapolation of
the data to the infinite volume. It is found that the critical value of
$\theta$ dec... | 1993-12-03 | 2011-07-19 | [
"hep-lat"
] | S. Olejnik and G. Schierholz |
hep-lat/9312022 | A review of heavy-heavy spectroscopy | Calculations of the heavy-heavy spectrum present a good opportunity for
precision tests of QCD using lattice techniques. All methods make use of a
non-relativistic expansion of the action and its systematic improvement to
remove lattice artefacts. There was convincing demonstration this year that
these methods work and... | 1993-12-03 | 2009-10-22 | [
"hep-lat"
] | C.T.H. Davies |
hep-lat/9312018 | Critical behaviour of random walks | We have numerically studied the trapping problem in a two-dimensional lattice
where particles are continuously generated. We have introduced interaction
between particles and directionality of their movement. This model presents a
critical behaviour with a rich phase structure similar to spin systems. We
interpret a ch... | 1993-12-03 | 2009-10-22 | [
"hep-lat"
] | I. Campos and A. Tarancon |
hep-lat/9312017 | Strange Quark Physics on the Lattice | We present results for hadrons containing a strange quark in quenched lattice
QCD. We calculate masses and decay constants using 60 gauge configurations with
an O(a)-improved fermion action at beta = 6.2. Using the rho mass to set the
scale, we find hadron masses within two to three standard deviations of
experiment. D... | 1993-12-03 | 2007-05-23 | [
"hep-lat"
] | D.G. Richards |
hep-lat/9312021 | The Isgur-Wise Function | After a brief introduction to the Heavy-Quark Effective Theory (HQET), I
review the extraction of the Isgur-Wise function from lattice QCD calculations
of the matrix elements for semi-leptonic decays of heavy-light pseudoscalar
mesons both into pseudoscalar and into vector mesons. This work is beginning to
test the hea... | 1993-12-03 | 2011-07-19 | [
"hep-lat"
] | R.D. Kenway |
hep-lat/9312016 | Lattice QCD Calculation of Hadron Scattering Lengths | Method of calculating hadron multi-point functions and disconnected quark
loop contributions which are not readily accessible through conventional
techniques is proposed. Results are reported for pion-pion, pion-nucleon and
nucleon-nucleon scattering lengths and the flavor singlet-non singlet meson
mass splitting estim... | 1993-12-03 | 2009-10-22 | [
"hep-lat"
] | Y. Kuramashi, M. Fukugita, H. Mino, M. Okawa and A. Ukawa |
hep-lat/9312020 | Heavy-light physics with NRQCD | First results are obtained for B mesons using a heavy propagator calculated
using NRQCD, and a light Wilson propagator. Results from 13 quenched
configurations of size 16^3 x 48 at \beta = 6.0 give a value for f_{B} of less
than 200 Mev and a B^{*}-B splitting of 32(8) MeV. Superior signal/noise
behaviour is observed o... | 1993-12-03 | 2012-08-27 | [
"hep-lat"
] | UKQCD Collaboration |
hep-lat/9312011 | Sphaleron transition rate in the classical 1+1 dimensional abelian Higgs
model at finite temperature | We compute the sphaleron transition rate in the 1+1 dimensional abelian Higgs
model at finite temperature, by real time simulation using the classical
canonical ensemble. | 1993-12-02 | 2009-10-22 | [
"hep-lat"
] | J. Smit and W. H. Tang |
hep-lat/9312012 | Some Non-Perturbative Aspects of Gauge Fixing in Two Dimensional
Yang-Mills Theory | Gauge fixing in general is incomplete, such that one solves some of the gauge
constraints, quantizes, then imposes any residual gauge symmetries (Gribov
copies) on the wavefunctions. While the Fadeev-Popov determinant keeps track of
the local metric on this gauge fixed surface, the global topology of the
reduced config... | 1993-12-02 | 2009-10-22 | [
"hep-lat"
] | James E. Hetrick |
hep-lat/9312008 | Gauge Fixing and Extended Abelian Monopoles in SU(2) Gauge Theory in 2+1
Dimensions | Extended Abelian monopoles are investigated in SU(2) lattice gauge theory in
three dimensions. Monopoles are computed by Abelian projection in several
gauges, including the maximal Abelian gauge. The number $N_m$ of extended
monopoles in a cube of size $m^3$ (in lattice units) is defined as the number
of elementary ($1... | 1993-12-02 | 2009-10-22 | [
"hep-lat"
] | G. I. Poulis, Howard D. Trottier and R. M. Woloshyn |
hep-lat/9312009 | $B_K$ Using Staggered Fermions: An Update | Improved results for $B_K$ are discussed. Scaling corrections are argued to
be of $O(a^2)$, leading to a reduction in the systematic error. For a kaon
composed of degenerate quarks, the quenched result is ${\widehat{B}_K} = 0.825
\pm 0.027 \pm 0.023$. | 1993-12-02 | 2009-10-22 | [
"hep-lat",
"hep-ph"
] | Stephen Sharpe |
hep-lat/9312014 | Fermion Number Conservation Isn't Fermion Conservation | A nonperturbative regularization of the Standard Model may have a
superficially undesirable exact global U(1) symmetry corresponding to exact
fermion number conservation. We argue that such a formulation can still have
the desired physics of fermion nonconservation, i.e. fermion particle creation
and annihilation by sp... | 1993-12-02 | 2009-10-22 | [
"hep-lat"
] | Wolfgang Bock, James E. Hetrick, and Jan Smit |
hep-lat/9312010 | Portable QCD codes for Massively Parallel Processors. UKQCD
collaboration | We present a new set of QCD codes in both message passing and data parallel
versions. The message passing package used is PARMACS, although other packages
may be used. Data parallel software is written in High Performance fortran, an
emerging standard based on Fortran 90. Software engineering methods have been
applied ... | 1993-12-02 | 2007-05-23 | [
"hep-lat"
] | Nick Stanford |
hep-lat/9312013 | A Lattice Calculation of the Heavy Quark Universal Form Factor | A computation of the Isgur-Wise universal form factor using a lattice
implementation of the heavy quark effective theory is described, and the
results of a lattice simulation are presented. | 1993-12-02 | 2009-10-22 | [
"hep-lat",
"hep-ph"
] | Jeffrey E. Mandula and Michael C. Ogilvie |
hep-lat/9312015 | Charmonium Spectroscopy From Lattice NRQCD | We present the first set of results for Charmonium Spectroscopy using
Non-Relativistic QCD (NRQCD). For the NRQCD action the leading order
spin-dependent and next to leading order spin-independent interactions have
been included. Clear signals for the s and p hyperfine splittings have been
observed as well as various o... | 1993-12-02 | 2012-08-27 | [
"hep-lat"
] | NRQCD collaboration |
hep-lat/9312003 | On the Correct Convergence of Complex Langevin Simulations for
Polynomial Actions | There are problems in physics and particularly in field theory which are
defined by complex valued weight functions $e^{-S}$ where $S$ is a polynomial
action $S: R^n \rightarrow C $. The conditions under which a convergent complex
Langevin calculation correctly simulates such integrals are discussed. All
conditions on ... | 1993-12-01 | 2009-10-22 | [
"hep-lat"
] | H. Gausterer |
hep-lat/9312007 | QED: Chiral transition and the issue of triviality | I give a review and progress report on studies of lattice QED. I emphasize
analytical results and methods that are applied in data analysis. Also, I
derive some bounds for the critical exponents and establish their connection
with scaling violations. Triviality, as realized in $\phi^4$ theory, is ruled
out on theoretic... | 1993-12-01 | 2009-10-22 | [
"hep-lat"
] | Aleksandar Kocic |
hep-lat/9312005 | Chiral gauge theories with domain wall fermions | We have investigated a proposal to construct chiral gauge theories on the
lattice using domain wall fermions. The model contains two opposite chirality
zeromodes, which live on two domain walls. We couple only one of them to a
gauge field, but find that mirror fermions which also couple to the gauge field
always seem t... | 1993-12-01 | 2009-10-22 | [
"hep-lat"
] | M. Golterman, K. Jansen, D. Petcher and J. Vink |
hep-lat/9312006 | Monopole clusters and critical dynamics in four-dimensional U(1) | We investigate monopoles in four-dimensional compact U(1) with Wilson action.
We focus our attention on monopole clusters as they can be identified
unambiguously contrary to monopole loops. We locate the clusters and determine
their properties near the U(1) phase transition. The Coulomb phase is
characterized by severa... | 1993-12-01 | 2009-10-22 | [
"hep-lat"
] | A. Bode, Th. Lippert and K. Schilling |
hep-lat/9312004 | Computer Stochastics in Scalar Quantum Field Theory | This is a series of lectures on Monte Carlo results on the non-perturbative,
lattice formulation approach to quantum field theory. Emphasis is put on 4D
scalar quantum field theory. I discuss real space renormalization group, fixed
point properties and logarithmic corrections, partition function zeroes, the
triviality ... | 1993-12-01 | 2007-05-23 | [
"hep-lat"
] | C. B. Lang |
hep-lat/9311073 | Tackling the Sign Problem | To tackle the sign problem in the simulations of systems having indefinite or
complex-valued measures, we propose a new approach which yields statistical
errors smaller than the crude Monte Carlo using absolute values of the original
measures. The 1D complex-coupling Ising model is employed as an illustration. | 1993-12-01 | 2008-11-26 | [
"hep-lat"
] | T D Kieu and C J Griffin |
hep-lat/9311072 | Monte Carlo Simulations with Indefinite and Complex-Valued Measures | A method is presented to tackle the sign problem in the simulations of
systems having indefinite or complex-valued measures. In general, this new
approach is shown to yield statistical errors smaller than the crude Monte
Carlo using absolute values of the original measures. Exactly solvable,
one-dimensional Ising model... | 1993-12-01 | 2008-11-26 | [
"hep-lat",
"hep-th"
] | T D Kieu and C J Griffin |
hep-lat/9311070 | Partially quenched QCD and staggered fermions | We summarize results for partially quenched chiral perturbation theory and
indicate an application to staggered fermion QCD in which the square root of
the determinant is taken to reduce the number of flavors from four to two. | 1993-12-01 | 2009-10-22 | [
"hep-lat"
] | C. Bernard and M. Golterman |
hep-lat/9312002 | Monte Carlo Simulations of the SU(2) Vacuum Structure | Lattice Monte Carlo simulations are performed for the SU(2) Yang Mills gauge
theory in the presence of an Abelian background with external sources to obtain
information on the effective potential. The goal is to investigate the lowest
Landau mode that, in the continuum one-loop effective potential, is the crucial
mode ... | 1993-12-01 | 2009-10-22 | [
"hep-lat"
] | A.R. Levi |
hep-lat/9311071 | Simulations with Complex Measures | Towards a solution to the sign problem in the simulations of systems having
indefinite or complex-valued measures, we propose a new approach which yields
statistical errors smaller than the crude Monte Carlo using absolute values of
the original measures. The 1D complex-coupling Ising model is employed as an
illustrati... | 1993-12-01 | 2008-11-26 | [
"hep-lat"
] | T D Kieu and C J Griffin |
hep-lat/9312001 | An Extraction of Vcb from the Semi-Leptonic B->D* Decay | We present an extraction of Vcb from a lattice calculation of the B->D* decay
matrix elements. We obtain |Vcb| \sqrt{ \frac{ \tauB }{ 1.49 ps } } = 0.037^{+3
\ +5}_{-3 \ -5} from a single parameter fit to the new CLEO data. Email
nmh@uk.ac.ed.ph.th | 1993-12-01 | 2010-11-01 | [
"hep-lat"
] | Nicholas Hazel |
hep-lat/9311068 | Non-perturbative investigation of the fermion-Higgs sector of the
standard model | We present results for the renormalized quartic self-coupling $\lm_R$ and the
renormalized Yukawa coupling $y_R$ in a fermion-Higgs model with two SU(2)
doublets, indicating that with the standard lattice regulator these couplings
cannot become very strong. | 1993-11-30 | 2007-05-23 | [
"hep-lat"
] | Wolfgang Bock, Christoph Frick, Jan Smit and Jeroen C. Vink |
hep-lat/9311063 | Scaling Study of the Leptonic Decay Constants of Heavy-Light Mesons: A
Consumers Report on Improvement Factors | A high statistics calculation, performed at $\beta =5.74,\;6.00$ and $6.26$,
enables us to study the variation of the leptonic decay constants $f_P$ of
heavy pseudoscalar mesons with the lattice spacing $a$. We observe only a weak
$a$ dependence when the standard $\sqrt{2\kappa}$ normalization is used for the
quark fie... | 1993-11-30 | 2019-08-17 | [
"hep-lat"
] | S. G\"usken, C. Alexandrou, F. Jegerlehner, K. Schilling, G. Siegert
and R. Sommer |
hep-lat/9311061 | The (dual) Meissner effect in SU(2) and SU(3) QCD | After making an abelian projection in the maximally abelian gauge, we measure
the distribution of abelian electric flux and monopole currents around an
abelian Wilson loop in $SU(2)$ and $SU(3)$ QCD. The (dual) Meissner effect is
observed clearly. The vacua in the confinement phases of $SU(2)$ and $SU(3)$
are both at a... | 1993-11-30 | 2009-10-22 | [
"hep-lat"
] | Y. Matsubara, S. Ejiri and T. Suzuki |
hep-lat/9311069 | Chiral gauge theories on the lattice without gauge fixing? | We discuss two proposals for a non-perturbative formulation of chiral gauge
theories on the lattice. In both cases gauge symmetry is broken by the
regularization. We aim at a dynamical restoration of symmetry. If the gauge
symmetry breaking is not too severe this procedure could lead in the continuum
limit to the desir... | 1993-11-30 | 2011-04-20 | [
"hep-lat"
] | Wolfgang Bock |
hep-lat/9311065 | Gluon 2- and 3-Point Correlation Functions on the Lattice | I present some preliminary results, obtained in collaboration with C. Bernard
and A. Soni, for the lattice evaluation of 2- and 3-point gluon correlation
functions in momentum space, with emphasis on the amputated 3-gluon vertex
function. The final goal of this approach is the study of the running QCD
coupling constant... | 1993-11-30 | 2009-10-22 | [
"hep-lat"
] | Claudio Parrinello |
hep-lat/9311066 | Chiral gauge theories on the lattice and restoration of gauge symmetry | We investigate a proposal for the construction of models with chiral fermions
on the lattice using staggered fermions. In this approach the gauge invariance
is broken by the coupling of the staggered fermions to the gauge fields. We aim
at a dynamical restoration of the gauge invariance in the full quantum model.
If th... | 1993-11-30 | 2009-10-22 | [
"hep-lat"
] | Wolfgang Bock, Jan Smit and Jeroen C. Vink |
hep-lat/9311067 | Universality of 2d Yukawa and Gross-Neveu models | Evidence for the same universal behavior of 2d Yukawa and Gross-Neveu models
in a certain range of couplings, particularly for $\kappa<0$, is presented. | 1993-11-30 | 2009-10-22 | [
"hep-lat"
] | E. Focht |
hep-lat/9311064 | Euclidean gravity attracts | We look at gravitational attraction in simplicial gravity using the dynamical
triangulation method. On the dynamical triangulation configurations we measure
quenched propagators of a free massive scalar field. The masses measured from
these propagators show that gravitational attraction is present. | 1993-11-30 | 2009-10-22 | [
"hep-lat",
"gr-qc"
] | Bas de Bakker and Jan Smit |
hep-lat/9311062 | Phase Diagram of a Lattice $SU(2) \times SU(2)$ Scalar-Fermion Model
Using the Zaragoza Fermions | We present a calculation of the phase diagram of a $SU(2) \times SU(2)$
chiral Yukawa model with massless decoupled doublers, using a saddle point
approach, both for small and large Yukawa coupling. Some preliminary MonteCarlo
results are also shown. | 1993-11-30 | 2010-03-19 | [
"hep-lat"
] | J.L. Alonso, Ph. Boucaud, F. Lesmes and E. Rivas |
hep-lat/9311060 | Evidence for the Role of Instantons in Hadron Structure from Lattice QCD | Cooling is used as a filter on a set of gluon fields sampling the Wilson
action to selectively remove essentially all fluctuations of the gluon field
except for the instantons. The close agreement between quenched lattice QCD
results with cooled and uncooled configurations for vacuum correlation
functions of hadronic c... | 1993-11-30 | 2008-11-26 | [
"hep-lat"
] | M.-C. Chu, J.M. Grandy, S. Huang and J.W. Negele |
hep-lat/9311057 | The role of heavy fermions | Heavy dynamical fermions with masses around the cut-off do not change the low
energy physics apart from a finite renormalization of the gauge coupling. In
this paper we study how light the heavy fermions have to be to cause more than
this trivial renormalization. | 1993-11-29 | 2009-10-22 | [
"hep-lat"
] | Anna Hasenfratz and Thomas A. DeGrand |
hep-lat/9311053 | SU(2) Colour Fields Around Static Sources | First results of an ongoing high statistics study of the colour flux
distribution around static quark sources in SU(2) gauge theory are presented.
The flux tube profiles and widths have been investigated for several quark
separations at beta=2.5 and beta=2.74. The results are tested against Michael's
sum rules. | 1993-11-29 | 2009-10-22 | [
"hep-lat"
] | G.S. Bali, K. Schilling, C. Schlichter |
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