The epsilon regime with Wilson fermions

Simple item page
dc.creatorBar, Oliver
dc.creatorNecco, Silvia
dc.creatorSchaefer, Stefan
dc.date2008-12-12
dc.date.accessioned2026-07-07T12:56:50Z
dc.date.available2026-07-07T12:56:50Z
dc.descriptionWe study the impact of explicit chiral symmetry breaking of Wilson fermions on mesonic correlators in the epsilon-regime using Wilson chiral perturbation theory (WChPT). We generalize the epsilon-expansion of continuum ChPT to nonzero lattice spacings for various quark mass regimes. It turns out that the corrections due to a nonzero lattice spacing are highly suppressed for typical quark masses of the order aLambda_QCD^2. The lattice spacing effects become more pronounced for smaller quark masses and lead to non-trivial corrections of the continuum ChPT results at next-to-leading order. We compute these corrections for the standard current and density correlation functions. A fit to lattice data shows that these corrections are small, as expected.
dc.description29 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/0812.2403
dc.identifierhttp://arxiv.org/abs/0812.2403
dc.identifierJHEP 0903:006,2009
dc.identifierdoi:10.1088/1126-6708/2009/03/006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/224719
dc.subjectHigh Energy Physics - Lattice
dc.titleThe epsilon regime with Wilson fermions
dc.typetext

Files

Collections

arXiv