Microcanonical mean-field thermodynamics of self-gravitating and rotating systems

Abstract

We derive the global phase diagram of a self-gravitating $N$-body system enclosed in a finite three-dimensional spherical volume $V$ as a function of total energy and angular momentum, employing a microcanonical mean-field approach. At low angular momenta (i.e. for slowly rotating systems) the known collapse from a gas cloud to a single dense cluster is recovered. At high angular momenta, instead, rotational symmetry can be spontaneously broken and rotationally asymmetric structures (double clusters) appear.

4 pages, 4 figures; to appear in Phys. Rev. Lett

References in corpus (2)

• Geometric Foundation of Thermo-Statistics, Phase Transitions, Second Law of Thermodynamics, but without Thermodynamic Limit
• Effect of angular momentum on equilibrium properties of a self-gravitating system

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