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Probing the chiral regime of N(f)=2 QCD with mixed actions

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Probing the chiral regime of N(f)=2 QCD with mixed actions

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dc.contributor.author	Bernardoni, Fabio
dc.contributor.author	Garron, Nicolas
dc.contributor.author	Hernández Gamazo, Pilar
dc.contributor.author	Necco, Silvia
dc.contributor.author	Pena Ruano, Carlos
dc.date.accessioned	2015-04-24T11:14:08Z
dc.date.available	2015-04-24T11:14:08Z
dc.date.issued	2011
dc.identifier.citation	Bernardoni, Fabio Garron, Nicolas Hernández Gamazo, Pilar Necco, Silvia Pena Ruano, Carlos 2011 Probing the chiral regime of N(f)=2 QCD with mixed actions Physical Review D 83 5 054503
dc.identifier.uri	http://hdl.handle.net/10550/43374
dc.description.abstract	We report on our first experiences with a mixed action setup with overlap valence quarks and non-perturbatively O(a) improved Wilson sea quarks. For the latter we employ CLS Nf=2 configurations with light sea quark masses at small lattice spacings. Exact chiral symmetry allows to consider very light valence quarks and explore the matching to (partially quenched) Chiral Perturbation Theory (ChPT) in a mixed epsilon/p-regime. We compute the topological susceptibility and the low-lying spectrum of the massless Neuberger-Dirac operator for three values of the sea quark mass, and compare the sea quark mass dependence to NLO ChPT in the mixed regime. This provides two different determinations of the chiral condensate, as well as information about some NLO low-energy couplings. Our results allow to test the consistency of the mixed-regime approach to ChPT, as well as of the mixed action framework.
dc.language.iso	eng
dc.relation.ispartof	Physical Review D, 2011, vol. 83, num. 5, p. 054503
dc.subject	Física
dc.title	Probing the chiral regime of N(f)=2 QCD with mixed actions
dc.type	journal article	es_ES
dc.date.updated	2015-04-24T11:14:08Z
dc.identifier.doi	10.1103/PhysRevD.83.054503
dc.identifier.idgrec	068062
dc.rights.accessRights	open access	es_ES