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Finite-Size scaling of vector and axial current correlators

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Finite-Size scaling of vector and axial current correlators

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dc.contributor.author	Damgaard, P.H.
dc.contributor.author	Hernández Gamazo, Pilar
dc.contributor.author	Jansen, K.
dc.contributor.author	Laine, Mikko
dc.contributor.author	Lellouch, Laurent
dc.date.accessioned	2015-04-23T12:17:00Z
dc.date.available	2015-04-23T12:17:00Z
dc.date.issued	2003
dc.identifier.citation	Damgaard, P.H. Hernández Gamazo, Pilar Jansen, K. Laine, Mikko Lellouch, Laurent 2003 Finite-Size scaling of vector and axial current correlators Nuclear Physics B 656 1-2 226 236
dc.identifier.uri	http://hdl.handle.net/10550/43333
dc.description.abstract	Using quenched chiral perturbation theory, we compute the long-distance behaviour of two-point functions of flavour non-singlet axial and vector currents in a finite volume, for small quark masses, and at a fixed gauge-field topology. We also present the corresponding predictions for the unquenched theory at fixed topology. These results can in principle be used to measure the low-energy constants of the chiral Lagrangian, from lattice simulations in volumes much smaller than one pion Compton wavelength. We show that quenching has a dramatic effect on the vector correlator, which is argued to vanish to all orders, while the axial correlator appears to be a robust observable only moderately sensitive to quenching.
dc.language.iso	eng
dc.relation.ispartof	Nuclear Physics B, 2003, vol. 656, num. 1-2, p. 226-236
dc.subject	Física
dc.title	Finite-Size scaling of vector and axial current correlators
dc.type	journal article	es_ES
dc.date.updated	2015-04-23T12:17:00Z
dc.identifier.doi	10.1016/S0550-3213(03)00117-2
dc.identifier.idgrec	081398
dc.rights.accessRights	open access	es_ES