Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-11-27
Astronomy and Astrophysics
Astrophysics
Talk presented at the COSMO-01 Workshop, Rovaniemi, Finnland, August 30 - September 4, 2001. 14 pages, LaTeX, 3 eps figures
Scientific paper
Increasing inhomogeneity due to gravitational clumping reflects increasing gravitational entropy in a time evolving universe. Starting from an ensemble of uniformly distributed particles it is demonstrated that gravitational clustering is subject to a specific quantization rule for the amount of increase of gravitational entropy during the formation of inhomogeneities. The gain of gravitational entropy at each higher order merging process within the system is shown to result as a natural consequence from an extremal condition involved. The resulting discrete spectrum of nested, bound structures of specific mass and radius, ranging from the particle physics scale to galaxies and super clusters, provides a unified view of fundamental inhomogeneity scales in the universe from gravitational entropy considerations. Consequently, also the gravitational arrow of time points in the direction of stepwise increasing entropy or inhomogeneity, respectively.
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