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Temperature dependence of shear viscosity of $SU(3)$--gluodynamics
within lattice simulation: In this paper we study the shear viscosity temperature dependence of
$SU(3)$--gluodynamics within lattice simulation. To do so, we measure the
correlation functions of energy-momentum tensor in the range of temperatures
$T/T... | hep-lat |
Perturbative renormalization of moments of quark momentum, helicity and
transversity distributions with overlap and Wilson fermions: Using overlap as well as Wilson fermions, we have computed the one-loop
renormalization factors of ten non-singlet operators which measure the third
moment of quark momentum and helicit... | hep-lat |
Roper Resonance in 2+1 Flavor QCD: The low-lying even-parity states of the nucleon are explored in lattice QCD
using the PACS-CS collaboration 2+1-flavor dynamical-QCD gauge-field
configurations made available through the International Lattice Datagrid
(ILDG). The established correlation-matrix approach is used, in whi... | hep-lat |
P-wave heavy-light mesons using NRQCD and D234: The masses of S- and P-wave heavy-light mesons are computed in quenched QCD
using a classically and tadpole-improved action on anisotropic lattices. Of
particular interest are the splittings among P-wave states, which have not yet
been resolved experimentally; even the or... | hep-lat |
Non-perturbative renormalization of left-left four-fermion operators in
quenched lattice QCD: We define a family of Schroedinger Functional renormalization schemes for the
four-quark multiplicatively renormalizable operators of the $\Delta F = 1$ and
$\Delta F = 2$ effective weak Hamiltonians. Using the lattice regul... | hep-lat |
Quark mass dependence of the low-lying charmed mesons at one loop in
HH$χ$PT: We study the light and heavy quark mass dependence of the low-lying charmed
mesons in the framework of one-loop HH$\chi$PT. The low energy constants are
determined by analyzing the available lattice data from different LQCD
simulations. Mod... | hep-lat |
Exact Chiral Fermions and Finite Density on Lattice: Any mu^2-divergence is shown analytically to be absent for a class of actions
for Overlap and Domain Wall Fermions with nonzero chemical potential. All such
actions are, however, shown to violate the chiral invariance. While the
parameter M of these actions can be sh... | hep-lat |
Antisymmetric and other subleading corrections to scaling in the local
potential approximation: For systems in the universality class of the three-dimensional Ising model we
compute the critical exponents in the local potential approximation (LPA), that
is, in the framework of the Wegner-Houghton equation. We are mos... | hep-lat |
Lattice QCD investigation of a doubly-bottom $\bar{b} \bar{b} u d$
tetraquark with quantum numbers $I(J^P) = 0(1^+)$: We use lattice QCD to investigate the spectrum of the $\bar{b} \bar{b} u d$
four-quark system with quantum numbers $I(J^P) = 0(1^+)$. We use five different
gauge-link ensembles with $2+1$ flavors of d... | hep-lat |
Stable solvers for real-time Complex Langevin: This study explores the potential of modern implicit solvers for stochastic
partial differential equations in the simulation of real-time complex Langevin
dynamics. Not only do these methods offer asymptotic stability, rendering the
issue of runaway solution moot, but they... | hep-lat |
Note on the Lattice Fermion Chiral Symmetry Group: The group structure of the variant chiral symmetry discovered by Luscher in
the Ginsparg-Wilson description of lattice chiral fermions is analyzed. It is
shown that the group contains an infinite number of linearly independent
symmetry generators, and the Lie algebra i... | hep-lat |
Intrinsic quark transverse momentum in the nucleon from lattice QCD: A better understanding of transverse momentum (k_T-) dependent quark
distributions in a hadron is needed to interpret several experimentally
observed large angular asymmetries and to clarify the fundamental role of gauge
links in non-abelian gauge the... | hep-lat |
Singularities of QCD in the complex chemical potential plane: We study the thermodynamic singularities of QCD in the complex chemical
potential plane by a numerical simulation of lattice QCD, and discuss a method
to understand the nature of the QCD phase transition at finite density from the
information of the singular... | hep-lat |
Longitudinal and transverse meson correlators in the deconfined phase
from the lattice: It has long been known that QCD undergoes a deconfining phase transition at
high temperature. One of the consequent features of this new, quark-gluon phase
is that hadrons become unbounded. In this talk meson correlation functions... | hep-lat |
A new lattice measurement for potentials between static SU(3) sources: In this article, a new calculation of static potentials between sources of
different representations in SU(3) gauge group is presented. The results of
author's previous study \cite{Deld00} at the smallest lattice spacing
$a_{s}\simeq0.11$~ fm are sh... | hep-lat |
Magnetic properties of light nuclei from lattice QCD: After a short review of Lattice QCD methodology and techniques, I summarize
recent results of Lattice QCD calculations of the interactions of nucleons and
light nuclei with magnetic fields at pion masses of 805 MeV and 450 MeV.
Interestingly, the magnetic moments ar... | hep-lat |
Reweighting Lefschetz Thimbles: We present a novel reweighting technique to calculate the relative weights in
the Lefschetz thimble decomposition of a path integral. Our method is put to
work using a $U(1)$ one-link model providing for a suitable testing ground and
sharing many features with realistic gauge theories wi... | hep-lat |
Abelian Dyons in the Maximal Abelian Projection of SU(2) Gluodynamics: Correlations of the topological charge Q, the electric current J^e and the
magnetic current J^m in SU(2) lattice gauge theory in the Maximal Abelian
projection are investigated. It occurs that the correlator <<QJ^e J^m>> is
nonzero for a wide range ... | hep-lat |
Extracting excited states from lattice QCD: the Roper resonance: We present a new method for extracting excited states from a single two-point
correlation function calculated on the lattice. Our method simply combines the
correlation function evaluated at different time slices so as to ``subtract''
the leading exponent... | hep-lat |
Electromagnetic properties of doubly charmed baryons in Lattice QCD: We compute the electromagnetic properties of \Xi_cc baryons in 2+1 flavor
Lattice QCD. By measuring the electric charge and magnetic form factors of
\Xi_cc baryons, we extract the magnetic moments, charge and magnetic radii as
well as the \Xi_cc \Xi_c... | hep-lat |
B- and D-meson decay constants from three-flavor lattice QCD: We calculate the leptonic decay constants of B_{(s)} and D_{(s)} mesons in
lattice QCD using staggered light quarks and Fermilab bottom and charm quarks.
We compute the heavy-light meson correlation functions on the MILC
asqtad-improved staggered gauge confi... | hep-lat |
Quenched hadron spectroscopy with improved staggered quark action: We investigate light hadron spectroscopy with an improved quenched staggered
quark action. We compare the results obtained with an improved gauge plus an
improved quark action, an improved gauge plus standard quark action, and the
standard gauge plus st... | hep-lat |
Non-perturbative improvement of bilinears in unquenched QCD: We describe how the improvement of quark bilinears generalizes from quenched
to unquenched QCD, and discuss which of the additional improvement constants
can be determined using Ward Identities. | hep-lat |
In search of a scaling scalar glueball: Anisotropic lattices are an efficient means of studying the glueballs of QCD,
however problems arise with simulations of the lightest, scalar state. The mass
is strongly dependent on the lattice spacing, even when a mean-field improved
gluon action is used. The nature and cause o... | hep-lat |
Finite size scaling in CP(N-1) models: Finite size effects in Euclidean ${\rm CP}^{N-1}$ models with periodic
boundary conditions are investigated by means of the $1/N$ expansion and by
Monte Carlo simulations. Analytic and numerical results for magnetic
susceptibility and correlation length are compared and found to a... | hep-lat |
Determination of the mass anomalous dimension for $N_f=12$ and $N_f=9$
SU($3$) gauge theories: We show the numerical simulation result for the mass anomalous dimension of
the SU($3$) gauge theory coupled to $N_f = 12$ fundamental fermions. We use two
independent methods, namely the step scaling method and the hypersc... | hep-lat |
Contribution of the charm quark to the ΔI=1/2 rule: We report on the progress of our ongoing project to quantify the role of the
charm quark in the non-leptonic decay of a kaon into two pions. The effect of
its associated mass scale in the dynamics underlying the \Delta I = 1/2 rule
can be studied by monitoring the dep... | hep-lat |
Spectrum of Mesons and Baryons with $b$ Quarks: We present highlights of the spectrum of mesons and baryons calculated using
NRQCD for heavy quarks and tadpole improved clover action for the light quarks. | hep-lat |
Instantaneous interquark potential in generalized Landau gauge in SU(3)
lattice QCD: a possible gauge for the quark potential model: We investigate "instantaneous interquark potential", an interesting
gauge-dependent quantity defined from the spatial correlator $<\mathrm{Tr}
[U_4^\dagger(s)U_4(s')]>$ of the temporal ... | hep-lat |
Vacuum alignment and lattice artifacts: When a subgroup of the flavor symmetry group of a gauge theory is weakly
coupled to additional gauge fields, the vacuum tends to align such that the
gauged subgroup is unbroken. At the same time, the lattice discretization
typically breaks the flavor symmetry explicitly, and can ... | hep-lat |
Broken Symmetries from Minimally Doubled Fermions: Novel chirally symmetric fermion actions containing the minimum amount of
fermion doubling have been recently proposed in the literature. We study the
symmetries and renormalization of these actions and find that in each case,
discrete symmetries, such as parity and ti... | hep-lat |
Proton and neutron electromagnetic form factors from lattice QCD: The electromagnetic form factors of the proton and the neutron are computed
within lattice QCD using simulations with quarks masses fixed to their physical
values. Both connected and disconnected contributions are computed. We analyze
two new ensembles o... | hep-lat |
Remarks on abelian dominance: We used a renormalisation group based smoothing to address two questions
related to abelian dominance. Smoothing drastically reduces short distance
fluctuations but it preserves the long distance physical properties of the
SU(2) configurations. This enabled us to extract the abelian heavy-... | hep-lat |
Entanglement entropy of SU(3) Yang-Mills theory: We calculate the entanglement entropy using a SU(3) quenched lattice gauge
simulation. We find that the entanglement entropy scales as $1/l^2$ at small
$l$ as in the conformal field theory. Here $l$ is the size of the system, whose
degrees of freedom is left after the ot... | hep-lat |
't Hooft loop and the phases of SU(2) LGT: We analyze the vacuum structure of SU(2) lattice gauge theories in D=2,3,4,
concentrating on the stability of 't Hooft loops. High precision calculations
have been performed in D=3; similar results hold also for D=4 and D=2. We
discuss the impact of our findings on the continu... | hep-lat |
Real-Time-Evolution of Heavy Quarks in the Glasma: We introduce a novel real-time formulation of lattice NRQCD designed for
simulations in the background of an highly occupied gluon field. By evolving
quarks in the background of a dynamically evolving gluon field we computed the
time-evolution of heavy-quarkonium spect... | hep-lat |
Decay constants of B and D mesons from improved relativistic lattice QCD
with two flavours of sea quarks: We present a calculation of the B and D meson decay constants in lattice QCD
with two (Nf=2) flavours of light dynamical quarks, using an O(a)-improved
Wilson action for both light and heavy quarks and a renormal... | hep-lat |
Lambda-parameter of lattice QCD with the overlap-Dirac operator: We compute the ratio $\Lambda_L/\Lambda_{\bar{MS}}$ between the scale
parameter $\Lambda_L$, associated with a lattice formulation of QCD using the
overlap-Dirac operator, and $\Lambda_{\bar{MS}}$ of the $\bar{\rm MS}$
renormalization scheme. To this end,... | hep-lat |
Behavior and finite-size effects of the sixth order cumulant in the
three-dimensional Ising universality class: The high-order cumulants of conserved charges are suggested to be sensitive
observables to search for the critical point of Quantum Chromodynamics (QCD).
This has been calculated to the sixth order in exper... | hep-lat |
Simulating Yang-Mills theories with a complex coupling: We propose a novel simulation strategy for Yang-Mills theories with a complex
coupling, based on the Lefschetz thimble decomposition. We envisage, that the
approach developed in the present work, can also be adapted to QCD at finite
density, and real time simulati... | hep-lat |
D-branes, Wilson Bags, and Coherent Topological Charge Structure in QCD: Monte Carlo studies of pure glue SU(3) gauge theory using the overlap-based
topological charge operator have revealed a laminar structure in the QCD vacuum
consisting of extended, thin, coherent, locally 3-dimensional sheets of
topological charge ... | hep-lat |
Perfect discretizations of differential operators: We investigate an approach for the numerical solution of differential
equations which is based on the perfect discretization of actions. Such perfect
discretizations show up at the fixed points of renormalization group
transformations. This technique of integrating out... | hep-lat |
Deconfinement Phase Transition in Bosonic BMN Model at General Coupling: We present our analysis of the deconfinement phase transition in the bosonic
BMN matrix model. The model is investigated using a non-perturbative lattice
framework. We used the Polyakov loop as the order parameter to monitor the
phase transition, ... | hep-lat |
Berry phase in lattice QCD: We propose the lattice QCD calculation of the Berry phase which is defined by
the ground state of a single fermion. We perform the ground-state projection of
a single-fermion propagator, construct the Berry link variable on a
momentum-space lattice, and calculate the Berry phase. As the firs... | hep-lat |
Minimally doubled fermions and their renormalization: Minimally doubled fermions have been proposed as a strictly local
discretization of the QCD quark action, which also preserves chiral symmetry at
finite cut-off. We study the renormalization and mixing properties of two
particular realizations of minimally doubled f... | hep-lat |
Fast Partitioning of Pauli Strings into Commuting Families for
Expectation Value Measurements of Dense Operators: The cost of measuring quantum expectation values of an operator can be
reduced by grouping the Pauli string ($SU(2)$ tensor product) decomposition of
the operator into maximally commuting sets. We detail ... | hep-lat |
The pion form factor on the lattice at zero and finite temperature: We calculate the electromagnetic form factor of the pion in quenched lattice
QCD. The non-perturbatively improved Sheikoleslami-Wohlert lattice action is
used together with the consistently O(a) improved current. We calculate the
pion form factor for m... | hep-lat |
Semi-leptonic decays of heavy mesons and the Isgur-Wise function in
quenched lattice QCD: The form factors for the semi-leptonic B->D and B->D* decays are evaluated in
quenched lattice QCD at two different values of the coupling, beta=6.0 and 6.2.
The action and the operators are fully O(a) non-perturbatively improve... | hep-lat |
Thermodynamics of Two Flavor QCD to Sixth Order in Quark Chemical
Potential: We present results of a simulation of 2-flavor QCD on a 4x16^3 lattice using
p4-improved staggered fermions with bare quark mass m/T=0.4. Derivatives of the
thermodynamic grand canonical partition function Z(V,T,mu_u,mu_d) with respect
to ch... | hep-lat |
Taste non-Goldstone, flavor-charged pseudo-Goldstone boson masses in
staggered chiral perturbation theory: We calculate the masses of taste non-Goldstone pions and kaons in staggered
chiral perturbation theory through next-to-leading order in the standard power
counting. The results can be used to quantitatively unde... | hep-lat |
Comparison of different source calculations in two-nucleon channel at
large quark mass: We investigate a systematic error coming from higher excited state
contributions in the energy shift of light nucleus in the two-nucleon channel
by comparing two different source calculations with the exponential and wall
sources.... | hep-lat |
Moments of parton evolution probabilities on the lattice within the
Schroedinger functional scheme: We define, within the Schroedinger functional scheme (SF), the matrix
elements of the twist-2 operators corresponding to the first two moments of
non-singlet parton densities. We perform a lattice one-loop calculation ... | hep-lat |
O(4) scaling analysis in two-flavor QCD at finite temperature and
density with improved Wilson quarks: We study the curvature of the chiral transition/crossover line between the
low-temperature hadronic phase and the high-temperature quark-gluon-plasma
phase at low densities, performing simulations of two-flavor QCD ... | hep-lat |
Status of the MILC calculation of electromagnetic contributions to
pseudoscalar masses: We calculate pseudoscalar masses on gauge configurations containing the
effects of 2+1 flavors of dynamical asqtad quarks and quenched
electromagnetism. The lattice spacings vary from 0.12 to 0.06 fm. The masses
are fit with stagg... | hep-lat |
Spectroscopy of two dimensional N=2 Super Yang Mills theory: Albeit the standard model is the most successful model of particles physics,
it still has some theoretical shortcomings, for instance the hierarchy problem,
the absence of dark matter, etc. Supersymmetric extensions of the standard
model could be a possible s... | hep-lat |
Fast algorithms for simulating chiral fermions in U(1)lattice gauge
theory: In order to develop fast inversion algorithms we have used overlap solvers in
two dimensions. Lattice QED theory with U(1) group symmetry in two dimensional
space-times dimensions has always been a testing ground for algorithms. By the
other ... | hep-lat |
Lattice QCD and heavy ion collisions: a review of recent progress: In the last few years, numerical simulations of QCD on the lattice have
reached a new level of accuracy. A wide range of thermodynamic quantities is
now available in the continuum limit and for physical quark masses. This allows
a comparison with measur... | hep-lat |
Hyper-Systolic Parallel Computing: A new class of parallel algorithms is introduced that can achieve a
complexity of O(n^3/2) with respect to the interprocessor communication, in the
exact computation of systems with pairwise mutual interactions of all elements.
Hitherto, conventional methods exhibit a communicational ... | hep-lat |
Axial and tensor charge of the nucleon with dynamical fermions: We present preliminary results for the axial and tensor charge of the nucleon
obtained from simulations with N_f=2 clover fermions. A comparison with chiral
perturbation theory is attempted. | hep-lat |
Monte Carlo overrelaxation for SU(N) gauge theories: The standard approach to Monte Carlo simulations of SU(N) Yang-Mills theories
updates successive SU(2) subgroups of each SU(N) link. We follow up on an old
proposal of Creutz, to perform overrelaxation in the full SU(N) group instead,
and show that it is more efficie... | hep-lat |
Chromo-electric screening length in 2+1 flavor QCD: We study Polyakov loop as well as correlators of real and imaginary parts of
the Polyakov loop in 2+1 flavor QCD at finite temperature. We use hypercubic
(HYP) smearing to improve the signal in the lattice calculations and to obtain
reliable results for the correlator... | hep-lat |
A Critical Surface of Chiral-invariant System with Gauge Boson and
Fermions: In the chirally-invariant context of the $U_{em}(1)$ gauge interaction and
four-fermion interactions for ordinary and mirror fermions, the Schwinger-Dyson
equation for the fermion self-energy function is studied on a lattice. We find
that a ... | hep-lat |
Predictions from Lattice QCD: In the past year, we calculated with lattice QCD three quantities that were
unknown or poorly known. They are the $q^2$ dependence of the form factor in
semileptonic $D\to Kl\nu$ decay, the decay constant of the $D$ meson, and the
mass of the $B_c$ meson. In this talk, we summarize these c... | hep-lat |
Flavor symmetry breaking in lattice QCD with a mixed action: We study the phase structure of mixed-action QCD with two Wilson sea quarks
and any number of chiral valence quarks (and ghosts), starting from the chiral
lagrangian. A priori, the effective theory allows for a rich phase structure,
including a phase with a c... | hep-lat |
Semileptonic B to D decays at nonzero recoil with 2+1 flavors of
improved staggered quarks: The Fermilab Lattice-MILC collaboration is completing a comprehensive program
of heavy-light physics on the MILC (2+1)-flavor asqtad ensembles with lattice
spacings as small as 0.045 fm and light-to-strange-quark mass ratios a... | hep-lat |
Detecting Dual Superconductivity in the Ground State of Gauge Theories -
II: A monopole creation operator is constructed: its vacuum expectation value is
an order parameter for dual superconductivity in that, if different from zero
it signals spontaneous breaking of the U(1) symmetry corresponding to monopole
charge ... | hep-lat |
Pion Distribution Amplitudes in the Continuum Limit: We present a lattice-QCD calculation of the pion distribution amplitudes
using large-momentum effective theory (LaMET). Our calculation is carried out
using five ensembles with 2+1+1 flavors of highly improved staggered quarks
(HISQ), generated by MILC collaboration,... | hep-lat |
On the lattice construction of electroweak gauge theory: Based on the Ginsparg-Wilson relation, a gauge invariant formulation of
electroweak SU(2)xU(1) gauge theory on the lattice is considered. If the
hypercharge gauge coupling is turned off in the vacuum sector of the U(1) gauge
fields, the theory consists of four le... | hep-lat |
A quadrature-based eigensolver with a Krylov subspace method for shifted
linear systems for Hermitian eigenproblems in lattice QCD: We consider a quadrature-based eigensolver to find eigenpairs of Hermitian
matrices arising in lattice quantum chromodynamics. To reduce the computational
cost for finding eigenpairs of ... | hep-lat |
Towards Radiative Transitions in Charmonium: We present preliminary calculations towards radiative transitions in
charmonium using anisotropic $N_f = 2 + 1$ dynamical ensembles generated by the
Hadron Spectrum Collaboration. With the use of newer technologies we aim to
investigate transitions between states, including ... | hep-lat |
Implementation of C* boundary conditions in the Hybrid Monte Carlo
algorithm: In the study of QCD dynamics, C* boundary conditions are physically relevant
in certain cases. In this paper we study the implementation of these boundary
conditions in the lattice formulation of full QCD with staggered fermions. In
particu... | hep-lat |
Mass estimates of the SU(2) $0^{++}$ glueball from spectral methods: The estimation of the K\"all\'en-Lehmann spectral density from gauge
invariant lattice QCD two point correlation functions is proposed, and explored
via an inversion strategy based on Tikhonov regularisation. We test the method
on a mesonic toy model,... | hep-lat |
Present and future prospects for lattice QCD calculations of matrix
elements for nEDM: A status report on the calculations of the contribution of four CP violating
operators, the $\Theta$-term, the quark EDM, the chromo EDM and the Weinberg
operator to the neutron EDM are presented. At this time, there exit precise
p... | hep-lat |
Glueballs on the three-sphere: We study the non-perturbative effects of the global features of the
configuration space for SU(2) gauge theory on the three-sphere. The strategy is
to reduce the full problem to an effective theory for the dynamics of the
low-energy modes. By explicitly integrating out the high-energy mod... | hep-lat |
Discrete Symmetry Enhancement in Nonabelian Models and the Existence of
Asymptotic Freedom: We study the universality between a discrete spin model with icosahedral
symmetry and the O(3) model in two dimensions. For this purpose we study
numerically the renormalized two-point functions of the spin field and the four
... | hep-lat |
Physical and unphysical effects in the mixed SU(2)/SO(3) gauge theory: We investigate possible problems with universality in lattice gauge theory
where a mixed fundamental SU(2) and SO(3)-invariant gauge group is used: the
(second order) finite temperature phase transition becomes involved with first
order effects with... | hep-lat |
Scaling behavior at the tricritical point in the fermion-gauge-scalar
model: We investigate a strongly coupled U(1) gauge theory with fermions and scalars
on the lattice and analyze whether the continuum limit might be a
renormalizable theory with dynamical mass generation. Most attention is paid to
the phase with br... | hep-lat |
Thermal mass and dispersion relations of quarks in the deconfined phase
of quenched QCD: Temporal quark correlation functions are analyzed in quenched lattice QCD for
two values of temperature above the critical temperature (Tc) for
deconfinement, T=1.5Tc and 3Tc. A two-pole ansatz for the quark spectral
function is ... | hep-lat |
Chiral transition and monopole percolation in lattice scalar QED with
quenched fermions: We study the interplay between topological observables and chiral and Higgs
transitions in lattice scalar QED with quenched fermions. Emphasis is put on
the chiral transition line and magnetic monopole percolation at strong gauge... | hep-lat |
Attractive $N$-$φ$ Interaction and Two-Pion Tail from Lattice QCD
near Physical Point: First results on the interaction between the $\phi$-meson and the nucleon
($N$) are presented based on the ($2+1$)-flavor lattice QCD simulations with
nearly physical quark masses. Using the HAL QCD method, the spacetime
correlatio... | hep-lat |
Gluons in Two-Color QCD at High Baryon Density: Landau gauge longitudinal and transverse gluon propagators are studied in
lattice QCD with gauge group $SU(2)$ at varying temperature and quark density.
In particular, it is found that the longitudinal propagator decreases with
increasing quark chemical potential at all t... | hep-lat |
Remark on the energy-momentum tensor in the lattice formulation of 4D
$\mathcal{N}=1$ SYM: In a recent paper, arXiv:1209.2473 \cite{Suzuki:2012gi}, we presented a
possible definition of the energy-momentum tensor in the lattice formulation of
the four-dimensional $\mathcal{N}=1$ supersymmetric Yang--Mills theory, tha... | hep-lat |
Nature of the $a_1$ meson in lattice quantum chromodynamics studied with
chiral fermions: We study the $a_1$ meson using a quenched lattice quantum chromodynamics
simulation with the truncated overlap fermions formalism based on the domain
wall fermions. The obtained lightest mass of the $a_1$ meson, 1272(45) MeV, is... | hep-lat |
Lattice investigations of the chimera baryon spectrum in the Sp(4) gauge
theory: We report the results of lattice numerical studies of the Sp(4) gauge theory
coupled to fermions (hyperquarks) transforming in the fundamental and two-index
antisymmetric representations of the gauge group. This strongly-coupled theory
i... | hep-lat |
A Study of Charmonium Systems across the Deconfinement Transition: We present results from lattice studies of charmonium systems near the
deconfinement transition temperature. On quenched isotropic lattices with
lattice spacings between 0.02 and 0.05 fm, bar{q} q systems with quark masses
close to the charm mass and wi... | hep-lat |
Theoretical Developments in Lattice Gauge Theory for Applications in
Double-beta Decay Processes and Quantum Simulation: Double beta decays are rare nuclear processes that can occur in two modes:
two-neutrino double beta decay, observed in the Standard Model, and
neutrinoless double beta decay, a hypothetical process... | hep-lat |
Canonical Demon Monte Carlo Renormalization Group: We describe a new method to compute renormalized coupling constants in a
Monte Carlo renormalization group calculation. The method can be used for a
general class of models, e.g., lattice spin or gauge models. The basic idea is
to simulate a joint system of block spins... | hep-lat |
Equation of state for pure SU(3) gauge theory with renormalization group
improved action: A lattice study of the equation of state for pure SU(3) gauge theory using a
renormalization-group (RG) improved action is presented. The energy density and
pressure are calculated on a $16^3\times 4$ and a $32^3\times 8$ lattic... | hep-lat |
A Study of Meson Correlators at Finite Temperature: We present results for mesonic propagators in temporal and spatial directions
at T below and above the deconfining transition in quenched QCD. Anisotropic
lattices are used to get enough information in the temporal direction. We use
the Wilson fermion action for light... | hep-lat |
Mean-Field Gauge Interactions in Five Dimensions II. The Orbifold: We study Gauge-Higgs Unification in five dimensions on the lattice by means
of the mean-field expansion. We formulate it for the case of an SU(2) pure
gauge theory and orbifold boundary conditions along the extra dimension, which
explicitly break the ga... | hep-lat |
Central Dominance and the Confinement Mechanism in Gluodynamics: New topological objects, which we call center monopoles, naturally arise in
the Maximal Center Projection of SU(3) gluodynamics. The condensate of the
center monopoles is the order parameter of the theory. | hep-lat |
Exploring the QCD phase diagram with three flavors of Möbius domain
wall fermions: We present an update on the study of the QCD phase transition with 3 flavors
of M\"obius domain wall fermions at zero baryon density. We performed
simulations on lattices of size $36^3\times12\times16$ and
$24^3\times12\times32$ with a... | hep-lat |
Rediscovery of Numerical Lüscher's Formula from the Neural Network: We present that by predicting the spectrum in discrete space from the phase
shift in continuous space, the neural network can remarkably reproduce the
numerical L\"uscher's formula to a high precision. The model-independent
property of the L\"uscher's ... | hep-lat |
Thermodynamics of heavy-light hadrons: Ratios of cumulants of conserved net charge fluctuations are sensitive to the
degrees of freedom that are carriers of the corresponding quantum numbers in
different phases of strong interaction matter. We calculate second and fourth
order cumulants of net charm and strange fluctua... | hep-lat |
Two-nucleon scattering in multiple partial waves: We determine scattering phase shifts for S,P,D, and F partial wave channels
in two-nucleon systems using lattice QCD methods. We use a generalization of
Luscher's finite volume method to determine infinite volume phase shifts from a
set of finite volume ground- and exci... | hep-lat |
Determinant of a new fermionic action on a lattice - (I): We investigate, analytically and numerically, the fermion determinant of a
new action on a (1+1)-dimensional Euclidean lattice. In this formulation the
discrete chiral symmetry is preserved and the number of fermion components is a
half of that of Kogut-Susskind... | hep-lat |
Estimating the Unquenched Strange Quark Mass from the Lattice Axial Ward
Identity: We present a determination of the strange quark mass for two flavours (nf=2)
of light dynamical quarks using the axial Ward identity. The calculations are
performed on the lattice using O(a) improved Wilson fermions and include a
fully... | hep-lat |
SU(N) polynomial integrals and some applications: We use the method of the Weingarten functions to evaluate SU(N) integrals of
the polynomial type. As an application we calculate various one-link integrals
for lattice gauge and spin SU(N) theories. | hep-lat |
High-loop perturbative renormalization constants for Lattice QCD (I):
finite constants for Wilson quark currents: We present a high order perturbative computation of the renormalization
constants Z_V, Z_A and of the ratio Z_P/Z_S for Wilson fermions. The
computational setup is the one provided by the RI'-MOM scheme. ... | hep-lat |
Multicanonical Spin Glass Simulations: We report a Monte Carlo simulation of the $2D$ Edwards-Anderson spin glass
model within the recently introduced multicanonical ensemble. Replica on
lattices of size $L^2$ up to $L=48$ are investigated. Once a true groundstate
is found, we are able to give a lower bound on the numb... | hep-lat |
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