In-medium Pions and Partial Restoration of Chiral Symmetry: a model-independent analysis

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dc.creatorJido, D.
dc.creatorHatsuda, T.
dc.creatorKunihiro, T.
dc.date2007-06-02
dc.date.accessioned2026-07-07T11:41:14Z
dc.date.available2026-07-07T11:41:14Z
dc.descriptionExploiting operator relations in QCD, we derive a novel and model-independent formula relating the in-medium quark condensate <bar-q q>* to the decay constant F*_t and the wave function renormalization constant Z* of the pion in the nuclear medium. Evaluating Z* at low density from the iso-scalar pion-nucleon scattering data, it is concluded that the enhanced repulsion of the s-wave isovector pion-nucleusinteraction observed in the deeply bound pionic atoms implies directly the reduction of the in-medium quark condensate. The knowlege of the in-medium pion mass is not necessary to reach this conclusion.
dc.description4 pages, Talk given at the Yukawa International Seminar (YKIS) 2006, "New frontiers in QCD -- Exotic hadrons and hadronic matter", Kyoto, Japan, 20 Nov. - 8 Dec. 2006. To be published in Supplemet of Prog. Theor. Phys
dc.identifierhttps://arxiv.org/abs/0706.0258
dc.identifierhttp://arxiv.org/abs/0706.0258
dc.identifierProg.Theor.Phys.Suppl.168:478-481,2007
dc.identifierdoi:10.1143/PTPS.168.478
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200464
dc.subjectNuclear Theory
dc.titleIn-medium Pions and Partial Restoration of Chiral Symmetry: a model-independent analysis
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