Lattice study of meson correlators in the epsilon-regime of two-flavor QCD

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dc.creatorJLQCD Collaboration
dc.creatorFukaya, H.
dc.creatorAoki, S.
dc.creatorHashimoto, S.
dc.creatorKaneko, T.
dc.creatorMatsufuru, H.
dc.creatorNoaki, J.
dc.creatorOgawa, K.
dc.creatorOnogi, T.
dc.creatorYamada, N.
dc.date2007-11-30
dc.date2008-03-05
dc.date.accessioned2026-07-07T11:54:27Z
dc.date.available2026-07-07T11:54:27Z
dc.descriptionWe calculate mesonic two-point functions in the epsilon-regime of two-flavor QCD on the lattice with exact chiral symmetry. We use gauge configurations of size 16^3 32 at the lattice spacing a \sim 0.11 fm generated with dynamical overlap fermions. The sea quark mass is fixed at \sim 3 MeV and the valence quark mass is varied in the range 1-4 MeV, both of which are in the epsilon-regime. We find a good consistency with the expectations from the next-to-leading order calculation in the epsilon-expansion of (partially quenched) chiral perturbation theory. From a fit we obtain the pion decay constant F=87.3(5.6) MeV and the chiral condensate Sigma^{MS}=[239.8(4.0) MeV ]^3 up to next-to-next-to-leading order contributions.
dc.description20 pages, 12 figures, final version to appear in PRD
dc.identifierhttps://arxiv.org/abs/0711.4965
dc.identifierhttp://arxiv.org/abs/0711.4965
dc.identifierPhys.Rev.D77:074503,2008
dc.identifierdoi:10.1103/PhysRevD.77.074503
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204906
dc.subjectHigh Energy Physics - Lattice
dc.titleLattice study of meson correlators in the epsilon-regime of two-flavor QCD
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