Tuesday, July 9, 2013

1307.1862 (A. Lavagno et al.)

Nonextensive Nuclear Liquid-Gas Phase Transition    [PDF]

A. Lavagno, D. Pigato
We study an effective relativistic mean-field model of nuclear matter with arbitrary proton fraction at finite temperature in the framework of nonextensive statistical mechanics, characterized by power-law quantum distributions. We investigate the presence of thermodynamic instability in a warm and asymmetric nuclear medium and study the consequent nuclear liquid-gas phase transition by requiring the Gibbs conditions on the global conservation of baryon number and electric charge fraction. We show that nonextensive statistical effects play a crucial role in the equation of state and in the formation of mixed phase also for small deviations from the standard Boltzmann-Gibbs statistics.
View original: http://arxiv.org/abs/1307.1862

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