Chiral properties of two-flavor QCD in small volume and at large lattice spacing

Abstract

We present results from simulations of two flavors of dynamical overlap fermions on 8^4 lattices at three values of the sea quark mass and a lattice spacing of about 0.16 fm. We measure the topological susceptibility and the chiral condensate. A comparison of the low-lying spectrum of the overlap operator with predictions from random matrix theory is made. To demonstrate the effect of the dynamical fermions, we compare meson two-point functions with quenched results. Algorithmic improvements over a previous publication and the performance of the algorithm are discussed.

arXiv comment16 pages, 12 figures

References in corpus (41)

• Exactly massless quarks on the lattice
• A Method for Simulating Chiral Fermions on the Lattice
• A New Way to Set the Energy Scale in Lattice Gauge Theories and its Application to the Static Force and ${\alpha }_s$ in SU(2) Yang--Mills Theory
• On the Viability of Lattice Perturbation Theory
• Flavor Symmetry and the Static Potential with Hypercubic Blocking
• Analytic Smearing of SU(3) Link Variables in Lattice QCD
• Axial symmetries in lattice QCD with Kaplan fermions
• Random matrix theory and spectral sum rules for the Dirac operator in QCD
• The index theorem in QCD with a finite cut-off
• The spectrum of the QCD Dirac operator and chiral random matrix theory: the threefold way
• The QCD spectrum with three quark flavors
• Spectral Density of the QCD Dirac Operator near Zero Virtuality
• Perfect lattice action for asymptotically free theories
• Speeding up the Hybrid-Monte-Carlo algorithm for dynamical fermions
• Light Hadron Spectroscopy with Two Flavors of Dynamical Quarks on the Lattice
• Lattice QCD on Small Computers
• A practical implementation of the Overlap-Dirac operator
• Speeding up Lattice QCD simulations with clover-improved Wilson Fermions
• Microscopic universality in the spectrum of the lattice Dirac operator
• Quark spectra, topology and random matrix theory
• Lattice QCD in the epsilon-regime and random matrix theory
• Dynamical overlap fermions, results with hybrid Monte-Carlo algorithm
• Distribution of the k-th smallest Dirac operator eigenvalue
• Improving meson two-point functions in lattice QCD
• Setting the scale for the Luescher-Weisz action
• Thouless Energy and Correlations of QCD Dirac Eigenvalues
• Physics issues in simulations with dynamical overlap fermions
• Small eigenvalues of the SU(3) Dirac operator on the lattice and in Random Matrix Theory
• Microscopic Spectral Density of the Dirac Operator in Quenched QCD
• The topological susceptibility of SU(3) gauge theory near T_c
• Microscopic universality with dynamical fermions
• Improved Wilson QCD simulations with light quark masses
• Spectral Properties of the Overlap Dirac Operator in QCD
• Eigenvalue Distributions of the QCD Dirac Operator
• Topological susceptibility with the improved Asqtad action
• One loop matching coefficients for a variant overlap action--and some of its simpler relatives
• Heavy Dynamical Fermions in Lattice QCD
• Topological susceptibility in full QCD: lattice results versus the prediction from the QCD partition function with granularity
• An alternative to domain wall fermions
• Improving meson two-point functions by low-mode averaging
• Topological Susceptibility on Dynamical Staggered Fermion Configurations

Cited by in corpus (28)

• Theta dependence of SU(N) gauge theories in the presence of a topological term
• A new class of variance reduction techniques using lattice symmetries
• Covariant approximation averaging
• Hypercubic Smeared Links for Dynamical Fermions
• Lattice gauge action suppressing near-zero modes of H_W
• Precision study of the SU(3) topological susceptibility in the continuum
• Hadron Spectroscopy with Dynamical Chirally Improved Fermions
• Topological susceptibility in two-flavor lattice QCD with exact chiral symmetry
• Quark condensate in two-flavor QCD
• Topology with Dynamical Overlap Fermions
• Chiral condensate from the twisted mass Dirac operator spectrum
• Numerical Methods for the QCD Overlap Operator IV: Hybrid Monte Carlo
• Quark condensate in one-flavor QCD
• QCD with two dynamical flavors of chirally improved quarks
• Simulating an arbitrary number of flavors of dynamical overlap fermions
• Continuum physics with quenched overlap fermions
• Current status of Dynamical Overlap project
• Finite-size scaling for the left-current correlator with non-degenerate quark masses
• 2+1 Flavor QCD simulated in the epsilon-regime in different topological sectors
• Renormalization of Bilinear Quark Operators for Overlap Fermions
• Quark mass anomalous dimension and ${\Lambda }_{\overline{\text{MS}}}$ from the twisted mass Dirac operator spectrum
• Individual Eigenvalue Distributions of Chiral Random Two-Matrix Theory and the Determination of F_pi
• Physics prospects of UV-filtered overlap quarks
• Lattice QCD with fixed topology
• Dynamical overlap fermions: techniques and results
• The eigSUMR inverter for overlap fermion
• The one-flavor quark condensate and related problems
• Janossy densities for chiral random matrix ensembles and their applications to two-color QCD