title: 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.
authors.affiliation: Hahn-Meitner-Institut, Bereich Theoretische Physik, Glienickerstrasse 100, 14109 Berlin, Germany. votyakov@hmi.de
authors.forename: E V
authors.initials: EV
authors.lastname: Votyakov
authors.forename: H I
authors.initials: HI
authors.lastname: Hidmi
authors.forename: A
authors.initials: A
authors.lastname: De Martino
authors.forename: D H E
authors.initials: DH
authors.lastname: Gross