Nonextensive effects on the relativistic nuclear equation of state

Details Nonextensive effects on the relativistic nuclear equation of state Nonextensive effects on the relativistic nuclear equation of state

2007-05-02

arxiv.org/abs/0705.0300v1

Phys.Rev.C76:015201,2007

Physics

Nuclear Physics

Nuclear Theory

6 pages, 8 figures, LaTeX

Scientific paper

10.1103/PhysRevC.76.015201

The Walecka many-body field theory is investigated in the context of quantum nonextensive statistical mechanics, characterized by a dimensionless parameter $q$. We consider nuclear matter described statistically by a power-law distribution which generalizes the standard Fermi-Dirac distribution ($q = 1$). We show that the scalar and vector meson fields become more intense due to the nonextensive effects ($q \neq 1$). From a numerical treatment, we also show that as the nonextensive parameter $q$ increases, the nucleon effective mass diminishes and the equation of state becomes stiffer. Finally, the usual Maxwell construction seems not to be necessary for isotherms with temperatures in the range 14 Mev$

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