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Equilibrium Correlations in a Clustering Universe |
| ZHANG Hang1;HUANG Xia2;LI Xiao-Qing1 |
| Department of Physics, Nanjing Normal University, Nanjing 210097
Department of Fundamental Sciences, North China Electric Power University, Beijing 102206 |
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| Cite this article: |
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ZHANG Hang, HUANG Xia, LI Xiao-Qing 2003 Chin. Phys. Lett. 20 2088-2090 |
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Abstract It is shown that the observed result of two-point galaxy correlation function and three-point correlation function in the universe agrees with a quasi-equilibrium assumption of mass distribution. Utilizing the form of the three-point correlation, we find that the two-point correlation function can be obtained by solving an equation derived from maximizing an entropy under some constraints in a self-gravitating particle model. A generalized non-extensive entropy is also introduced to improve our result.
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| Keywords:
98.65.Dx
05.70.Ln
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Published: 01 November 2003
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| PACS: |
98.65.Dx
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(Superclusters; large-scale structure of the Universe (including voids, pancakes, great wall, etc.))
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05.70.Ln
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(Nonequilibrium and irreversible thermodynamics)
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