Anomalous thermodynamics and phase transitions in neutron star matter

作者:Ducoin C*; Hasnaoui K H O; Napolitani P; Chomaz Ph; Gulminelli F
来源:Physical Review C, 2007, 75(6): 065805.
DOI:10.1103/PhysRevC.75.065805

摘要

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 consequence, the analytical properties of the partition sum are modified, changing the order of the phase transitions and affecting the possible occurrence of critical behaviors. The peculiar thermodynamic properties of this system can be understood introducing a model Hamiltonian where each charge is independently neutralized by a uniform background of opposite charge. Some consequences on the characteristics of mixed-phase structures in neutron star crusts and supernova cores are discussed.

  • 出版日期2007-6
  • 单位中国地震局