On the 'mixing' of self-gravitating systems in a cosmological context

Details On the 'mixing' of self-gravitating systems in a cosmological context On the 'mixing' of self-gravitating systems in a cosmological context

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...366..384k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 366, Jan. 10, 1991, p. 384-387.

Statistics

Computation

2

Computational Astrophysics, Cosmology, Galactic Clusters, Gravitational Effects, Universe, Dynamical Systems, Galactic Mass, Mathematical Models

Scientific paper

Kandrup (1989 and 1990) has extended the work of Gurzadyan and Savvidy (1984 and 1986) to argue that a self-gravitating system of stars like a galaxy should, given more or less arbitrary initial conditions, tend to mix, and hence 'forget its initial conditions' and evolve toward a more generic state, on a time scale much shorter than the two-body relaxation time. The objective here is to indicate what a similar line of reasoning might say about a collection of point mass galaxies, or other similar objects, embedded in an expanding universe. As for the case of a system of stars, the net conclusion is that such effects should indeed be manifest on a comparatively short time scale.

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