Aspects of particle production in isospin-asymmetric matter

Collective modes in strange and isospin asymmetric hadronic matter

We study the propagation of non-strange and strange meson modes in hadronic matter considering isospin and/or strangeness mixing induced by quantum fluctuations in the medium. Baryons are described using the Quark Meson Coupling model extended to include couplings with strange quarks. In particular we evaluate the dependence of the meson masses on the baryonic density, the strangeness fraction ...

Chemical and mechanical instability in hot isospin - asymmetric nuclear matter

Using phenomenological equations of state, we study the chemical and mechanical instabilities in hot isospin-asymmetric nuclear matter. Both instabilities are found to depend strongly on the isospin asymmetry of the nuclear matter. For a chemically and mechanically stable asymmetric nuclear matter, a lower neutron excess is found in the liquid phase than in the gas phase. Furthermore, the neutr...

Pseudo-Goldstone Modes in Isospin-Asymmetric Nuclear Matter

We analyze the chiral limit in dense isospin-asymmetric nuclear matter. It is shown that the pseudo-Goldstone modes in this system are qualitatively different from the case of isospin-symmetric matter. On leave from Department of Physics and Astronomy, University of Maryland, College Park, MD 20742

Pions in isospin asymmetric nuclei

Using a pair of the lightest mirror nuclei, 3 He and 3 H, we study the effect of the medium modification of pion fields on the flavor non-singlet structure function. The change of the pion fields leads to an enhancement of the flavor asymmetry of the antiquark distributions in a nucleus.

Theoretical Aspects of Particle Production