The pion velocity in dense skyrmion matter
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The pion velocity in dense skyrmion matter

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The pion velocity in dense skyrmion matter

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dc.contributor.author Lee, Hee-Jung
dc.contributor.author Park, Byung Yoon
dc.contributor.author Rho, Mannque
dc.contributor.author Vento Torres, Vicente
dc.date.accessioned 2015-05-12T11:32:54Z
dc.date.available 2015-05-12T11:32:54Z
dc.date.issued 2004
dc.identifier.uri http://hdl.handle.net/10550/43733
dc.description.abstract We have developed a field theory formalism to calculate in-medium properties of hadrons within a unified approach that exploits a single Lagrangian to describe simultaneously both matter background and meson fluctuations. In this paper we discuss the consequences on physical observables of a possible phase transition of hadronic matter taking place in the chiral limit. We pay special attention to the pion velocity vπ, which controls, through a dispersion relation, the pion propagation in the hadronic medium. The vπ is defined in terms of parameters related to the matrix element in matter of the axial-vector current, namely, the in-medium pion decay constants, ft and fs. Both of the pion decay constants change dramatically with density and even vanish in the chiral limit when chiral symmetry is restored, but the pion velocity does not go to zero, decreasing at most 10% over the whole density range studied. A possible pseudogap structure is indicated.
dc.language.iso eng
dc.relation.ispartof Nuclear Physics A, 2004, vol. 741, p. 161-178
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Lee, Hee-Jung Park, Byung Yoon Rho, Mannque Vento Torres, Vicente 2004 The pion velocity in dense skyrmion matter Nuclear Physics A 741 161 178
dc.subject Física
dc.title The pion velocity in dense skyrmion matter
dc.type info:eu-repo/semantics/article
dc.date.updated 2015-05-12T11:32:55Z
dc.identifier.doi http://dx.doi.org/10.1016/j.nuclphysa.2004.06.010
dc.identifier.idgrec 018692

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