Statistical mechanics of self-gravitating system: Cluster expansion method

Osamu Iguchi*, Tomomi Kurokawa, Masahiro Morikawa, Akika Nakamichi, Yasuhide Sota, Takayuki Tatekawa, Kei Ichi Maeda

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


We study statistical mechanics of the self-gravitating system applying the cluster expansion method developed in solid state physics. By summing infinite series of diagrams, we derive a complex free energy whose imaginary part is related to the relaxation time of the system, and a two-point correlation function.

Original languageEnglish
Pages (from-to)4-9
Number of pages6
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Issue number1-2
Publication statusPublished - 1999 Sept 6


  • Self-gravitating system
  • Statistical mechanics

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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