The self-gravitating Fermi gas

Details The self-gravitating Fermi gas The self-gravitating Fermi gas

2002-05-24

arxiv.org/abs/astro-ph/0205426v1

Astronomy and Astrophysics

Astrophysics

Invited talk at DARK 2002, 4th Int. Conf. on Dark Matter in Astro and Particle Physics, Cape Town, Feb. 2002

Scientific paper

We discuss the nature of phase transitions in the self-gravitating Fermi gas at non-zero temperature. This study can be relevant for massive neutrinos in Dark Matter models and for collisionless self-gravitating systems experiencing a ``violent relaxation''. Below a critical energy (in the microcanonical ensemble) or below a critical temperature (in the canonical ensemble), the system undergoes a gravitational collapse leading to a compact object with a massive degenerate nucleus (fermion ball).

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