Generalized Hybrid Derivative Coupling Model With Dilaton Field to Study Phase Transition From Nuclear Matter to Quark Matter

Abstract

The properties of isospin symmetric nuclear matter and its phase transition to quark matter at zero temperature have been investigated in the framework of generalized hybrid derivative coupling model by including the contribution of dilation field. We have compared the results of different models in presence and in absence of dilaton field. The effect of dilaton field becomes prominent as the density increases. The most striking feature of this work is that in presence of dilaton field the vector meson contribution to total energy density is approximately proportional to ρ 4/3 instead of ρ 2 when the density ρ is extremely high. * E-mail: tpbm@mahendra.iacs.res.in 3673 Int. J. Mod. Phys. A 1999.14:3673-3686. Downloaded from www.worldscientific.com by FLINDERS UNIVERSITY LIBRARY on 02/07/15. For personal use only.