Thermodynamics of free domain wall fermions

Gavai, R. V. ; Sharma, Sayantan (2009) Thermodynamics of free domain wall fermions Physical Review D, 79 (7). 074502_1-074502_11. ISSN 0556-2821

[img]
Preview
PDF - Publisher Version
262kB

Official URL: http://prd.aps.org/abstract/PRD/v79/i7/e074502

Related URL: http://dx.doi.org/10.1103/PhysRevD.79.074502

Abstract

Studying various thermodynamic quantities for the free domain wall fermions for both finite and infinite fifth dimensional extent N5, we find that the lattice corrections are minimal for NT≥10 for both energy density and susceptibility, for its irrelevant parameter M in the range 1.45-1.50. The correction terms are, however, quite large for small lattice sizes of NT≤8. We propose modifications of the domain wall operator, as well as the overlap operator, to reduce the finite cutoff effects to within 10% of the continuum results of the thermodynamic quantities for the currently used NT=6-8 lattices. Incorporating the chemical potential, we show that divergences proportional to μ2/a2 are absent for a large class of such domain wall fermion actions although the chiral symmetry is broken for μ≠0 at any finite lattice spacing.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:14042
Deposited On:12 Nov 2010 09:16
Last Modified:16 May 2016 23:05

Repository Staff Only: item control page