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Thermal evolution of the chiral condensate in SU(2) and SU(3) Chiral Perturbation Theory.

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dc.contributor.authorPeláez Sagredo, José Ramón
dc.date.accessioned2023-06-20T11:07:29Z
dc.date.available2023-06-20T11:07:29Z
dc.date.issued2003-06
dc.description©Elsevier Science Bv. High-Energy Physics International Conference on Quantum ChromoDynamics (9. 2002. Montpllier, Francia). 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,a CICYT-INFN collaboration grant, the European EURIDICE HPRNCT-2002-00311, as well as a Marie Curie fellowship MCFI-2001-01155.
dc.description.abstractThe temperature evolution of the chiral condensates in a gas made of pions, kaons and etas is studied within the framework of SU(2) and SU(3) 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. We find that the SU(3) formalism yields an extrapolated melting temperature for the non-strange condensates which is lower by about 0-30 MeV than within SU(2). In addition our results show that the strange condensate melting is slower than that of the non-strange, due to the different strange and non-strange quark masses.
dc.description.departmentDepto. de Física Teórica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipSpanish CICYT
dc.description.sponsorshipCICYT-INFN
dc.description.sponsorshipE.U. EURIDICE
dc.description.sponsorshipMarie Curie fellowship
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/35545
dc.identifier.doi10.1016/S0920-5632(03)01865-6
dc.identifier.issn0920-5632
dc.identifier.officialurlhttp://dx.doi.org/10.1016/S0920-5632(03)01865-6
dc.identifier.relatedurlhttp://www.sciencedirect.com
dc.identifier.relatedurlhttp://arxiv.org/abs/hep-ph/0210061
dc.identifier.urihttps://hdl.handle.net/20.500.14352/51738
dc.journal.titleNuclear Physics B-Proceedings Supplements
dc.language.isoeng
dc.page.final300
dc.page.initial295
dc.publisherElsevier Science Bv
dc.relation.projectIDFPA2000 0956
dc.relation.projectIDBFM2000 1326
dc.relation.projectIDHPRNCT-2002-00311
dc.relation.projectIDMCFI-2001-01155
dc.rights.accessRightsopen access
dc.subject.cdu51-73
dc.subject.keywordOne-loop
dc.subject.keywordPhase-transition
dc.subject.keywordQuark condensate
dc.subject.keywordScattering
dc.subject.keywordMass
dc.subject.keywordQcd
dc.subject.keywordπ
dc.subject.keywordUnitarization
dc.subject.keywordLagrangians
dc.subject.keywordDependence
dc.subject.ucmFísica-Modelos matemáticos
dc.subject.ucmFísica matemática
dc.titleThermal evolution of the chiral condensate in SU(2) and SU(3) Chiral Perturbation Theory.
dc.typejournal article
dc.volume.number121
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dspace.entity.typePublication
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relation.isAuthorOfPublication.latestForDiscovery70900239-cb8b-49f3-931f-9dc6a8b7d8d5

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