2008/03/31 by Debasish Banerjee, Rajiv V. Gavai, R. V. Gavai +1
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph
paper · pdf · doi:10.1103/physrevd.78.014506
published as Phys.Rev.D78:014506,2008 · 12 Pages, RevTex4, 12 Figures (included), Sections II, III A. reorganised, new Appendix added, more precise results in fig. 3, some new references added, version to be published in Physical Review D
arxiv created 2008/06/20 · openalex publication_date 2008/07/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The thermodynamics of massless ideal gas of overlap quarks has been investigated both analytically and numerically for both zero and nonzero baryon chemical potential. Any \ensuremathμ2 divergence is shown analytically to be absent for a class of actions with nonzero chemical potential. All such actions are shown to violate chiral invariance. While the parameter M can be shown to be irrelevant in the continuum limit, as expected, it is shown numerically that the continuum limit can be reached with relatively coarser lattices for 1.5\ensuremath≤M\ensuremath≤1.6. Numerical limitations of the existing method of introduction of chemical potential are demonstrated. Finally we also show that the energy density for the massive overlap fermions has the correct continuum limit.