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

2005/06/21 by Thomas DeGrand, Stefan Schaefer
Physics and Astronomy · #Chiral perturbation theory #Fermion #High-Energy Particle Collisions Research #Lattice (music) #Lattice QCD #Meson #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quark #Quenched approximation #Statistical physics #Theoretical physics #hep-lat

paper · pdf · doi:10.1103/physrevd.72.054503

published as Phys.Rev. D72 (2005) 054503 · 16 pages, 12 figures

arxiv created 2005/06/21 · openalex publication_date 2005/09/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We present results from simulations of two flavors of dynamical overlap fermions on 8⁴ 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.

Citations

• A method for simulating chiral fermions on the lattice
• Physics issues in simulations with dynamical overlap fermions
• Speeding up lattice QCD simulations with clover-improved Wilson fermions
• Microscopic spectral density of the Dirac operator in quenched QCD
• Heavy dynamical fermions in lattice QCD
• Improved Wilson QCD simulations with light quark masses
• Improving meson two-point functions in lattice QCD
• Axial symmetries in lattice QCD with Kaplan fermions
• Small eigenvalues of the SU(3) Dirac operator on the lattice and in random matrix theory
• Lattice QCD on small computers
• Topological susceptibility with the improved Asqtad action