arXiv:hep-ph/9603403·v1·High Energy Physics — Phenomenology
QCD phase transitions from relativistic hadron models
A. Delfino (UFF-Universidade Federal Fluminense, Brasil)🇧🇷 · Jishnu Dey (Instituto Tecnologico da Aeronautica, CTA, Brasil)🇧🇷 · Mira Dey (Instituto de Fisica Teorica, UNESP, Brasil)🇧🇷 · M. Malheiro (UFF, present adress: Department of Physics, University of Maryland at College Park, USA)🇧🇷
Abstract
The models of translationally invariant infinite nuclear matter in the relativistic mean field models are very interesting and simple, since the nucleon can connect only to a constant vector and scalar meson field. Can one connect these to the complicated phase transitions of QCD ? For an affirmative answer to this question, one must consider models where the coupling constants to the scalar and vector fields must depend on density in a non-linear way, since as such the models are not explicitly chirally invariant. Once this is ensured, indeed one can derive a quark condensate indirectly from the energy density of nuclear matter which goes to zero at large density and temperature. The change to zero condensate indicates a smooth phase transition.
Comments: 12 pages latex file, 1 table, 12 Postscript figures. To appear in Zeit. f. Phys. C