Pion Polarizabilities and Volume Effects in Lattice QCD

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dc.creatorHu, Jie
dc.creatorJiang, Fu-Jiun
dc.creatorTiburzi, Brian C.
dc.date2007-09-13
dc.date.accessioned2026-07-07T11:19:17Z
dc.date.available2026-07-07T11:19:17Z
dc.descriptionWe use chiral perturbation theory to study the extraction of pion electromagnetic polarizabilities from lattice QCD. Chiral extrapolation formulae are derived for partially quenched QCD, and quenched QCD simulations. On a torus, volume dependence of electromagnetic observables is complicated by SO(4) breaking, as well as photon zero-mode interactions. We determine finite volume corrections to the Compton scattering tensor of pions. We argue, however, that such results cannot be used to ascertain volume corrections to polarizabilities determined in lattice QCD with background field methods. Connection is lacking because momentum expansions are not permitted in finite volume. Our argument also applies to form factors. Volume effects for electromagnetic moments cannot be deduced from finite volume form factors.
dc.description5 figs., 19pp
dc.identifierhttps://arxiv.org/abs/0709.1955
dc.identifierhttp://arxiv.org/abs/0709.1955
dc.identifierPhys.Rev.D77:014502,2008
dc.identifierdoi:10.1103/PhysRevD.77.014502
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/193634
dc.subjectHigh Energy Physics - Lattice
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titlePion Polarizabilities and Volume Effects in Lattice QCD
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