Regular Article - Theoretical Physics
-meson spectral function in hot asymmetric nuclear matter
Department of Physics, Providence Women’s College, 673009, Calicut, Kerala, India
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Accepted: 25 March 2019
Published online: 20 May 2019
The -meson spectral function in hot and dense asymmetric nuclear matter (number densities of proton and neutron different) is evaluated in an effective chiral SU(3) model within the mean field approximation (MFA). The dependence of the vector meson masses on density and temperature, their variation with the asymmetry parameter, the form of the spectral function when the symmetry is broken are studied. One can observe a clear splitting of the longitudinal and the transverse modes among the isospin multiplets. The role of a running tensor coupling on the spectral function is also studied.
© Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature, 2019