Anomalous thermodynamics and phase transitions of neutron-star matter

Details Anomalous thermodynamics and phase transitions of neutron-star matter Anomalous thermodynamics and phase transitions of neutron-star matter

2005-07-27

arxiv.org/abs/astro-ph/0507633v2

Phys.Rev.C75:065805,2007

Astronomy and Astrophysics

Astrophysics

4 pages - GANIL, LPC

Scientific paper

10.1103/PhysRevC.75.065805

In this letter we show that the presence of the long-range Coulomb force in dense stellar matter implies that the total charge cannot be associated with a chemical potential, even if it is a conserved quantity. As a further consequence, the analytical properties of the partition sum are modified, changing the order of the phase transitions and affecting the possible occurrence of critical behaviours. The peculiar thermodynamic properties of the system can be understood introducing a model hamiltonian in which each charge is independently neutralized by a uniform background of opposite charge.

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