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The SU(2) and SU(3) chiral phase transitions within chiral perturbation theory

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dc.contributor.authorPeláez Sagredo, José Ramón
dc.date.accessioned2023-06-20T20:13:14Z
dc.date.available2023-06-20T20:13:14Z
dc.date.issued2002-11-01
dc.description©2002 The American Physical Society. The author thanks A. Dobado, A. Gómez Nicola and E. Oset for useful comments, and support from the Spanish CICYT projects FPA2000 0956 and BFM2000 1326, as well as the Marie Curie fellowship through Grant No. MCFI-2001-01155.
dc.description.abstractThe SU(2) and SU(3) chiral phase transitions in a gas made of pions, kaons, and etas are studied within the framework of chiral perturbation theory. We describe the temperature dependence of the quark condensates by using the meson meson scattering phase shifts in a second order virial expansion. In particular, the SU(3) formalism yields a somewhat lower melting temperature for the nonstrange condensates than within SU(2), and also predicts that the strange condensate melting is slower than that of the nonstrange, due to the different strange and nonstrange quark masses.
dc.description.departmentDepto. de Física Teórica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipSpanish CICYT
dc.description.sponsorshipMarie Curie fellowship
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/35596
dc.identifier.doi10.1103/PhysRevD.66.096007
dc.identifier.issn0556-2821
dc.identifier.officialurlhttp://dx.doi.org/http://dx.doi.org/10.1103/PhysRevD.66.096007
dc.identifier.relatedurlhttp://journals.aps.org
dc.identifier.urihttps://hdl.handle.net/20.500.14352/59870
dc.issue.number9
dc.journal.titlePhysical Review D
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.projectIDFPA2000 0956
dc.relation.projectIDBFM2000 1326
dc.relation.projectIDMCFI-2001-01155
dc.rights.accessRightsopen access
dc.subject.cdu51-73
dc.subject.keywordOne-loop
dc.subject.keywordForm-factors
dc.subject.keywordMeson interactions
dc.subject.keywordVirial expansion
dc.subject.keywordQuark mass
dc.subject.keywordPion gas
dc.subject.keywordScattering
dc.subject.keywordQcd
dc.subject.keywordUnitarization
dc.subject.keywordLagrangians
dc.subject.ucmFísica-Modelos matemáticos
dc.subject.ucmFísica matemática
dc.titleThe SU(2) and SU(3) chiral phase transitions within chiral perturbation theory
dc.typejournal article
dc.volume.number66
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relation.isAuthorOfPublication70900239-cb8b-49f3-931f-9dc6a8b7d8d5
relation.isAuthorOfPublication.latestForDiscovery70900239-cb8b-49f3-931f-9dc6a8b7d8d5

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