Chiral-symmetry restoration in clustered hadronic matter |
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Authors: | G Krein |
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Institution: | (1) Instituto de Física Teórica, Universidade Estadual Paulista, Rua Pamplona, 145, 01405-900 São Paulo, SP, Brazil |
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Abstract: | Chiral-symmetry restoration is usually discussed in the context of quark matter, a system of deconfined quarks. However, many systems like stable nuclei and neutron stars have quarks confined within nucleons. In the present paper we use a Fermi sea of three-quark clusters instead of a Fermi sea of deconfined quarks to investigate the in-medium quark condensate. We find that an enhancement of the chiral breaking in clustered matter as claimed in the literature is not a consequence of the clustering but rather dependent on the microscopic model dynamics.Received: 30 September 2002, Published online: 22 October 2003PACS:
21.65. + f Nuclear matter - 24.85. + p Quarks, gluons, and QCD in nuclei and nuclear processes - 12.39.-x Phenomenological quark models |
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