Nonextensive statistical effects in the hadron to quarkgluon phase transition

A Lavagno (1, 2) , D Pigato (1, 2) , P Quarati (1, 3)

1 Dipartimento di Fisica
2 Sezione di Torino
3 Sezione di Cagliari

We investigate the relativistic equation of state of hadronic matter and quark-gluon plasma at finite temperature and baryon density in the framework of the nonextensive statistical mechanics, characterized by power-law quantum distributions. We study the phase transition from hadronic matter to quark-gluon plasma 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.

Mots clés: Physical Sciences

A Lavagno, D Pigato, P Quarati. Nonextensive statistical effects in the hadron to quarkgluon phase transition. Journal of Physics G: Nuclear and Particle Physics, 2010, 37 (11), pp.115102. ⟨10.1088/0954-3899/37/11/115102⟩. ⟨hal-00600779⟩