### Abstract

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 language | English |
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Pages (from-to) | 4-9 |

Number of pages | 6 |

Journal | Physics Letters, Section A: General, Atomic and Solid State Physics |

Volume | 260 |

Issue number | 1-2 |

Publication status | Published - 1999 Sep 6 |

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### Keywords

- Self-gravitating system
- Statistical mechanics

### ASJC Scopus subject areas

- Physics and Astronomy(all)

### Cite this

*Physics Letters, Section A: General, Atomic and Solid State Physics*,

*260*(1-2), 4-9.

**Statistical mechanics of self-gravitating system : Cluster expansion method.** / Iguchi, Osamu; Kurokawa, Tomomi; Morikawa, Masahiro; Nakamichi, Akika; Sota, Yasuhide; Tatekawa, Takayuki; Maeda, Keiichi.

Research output: Contribution to journal › Article

*Physics Letters, Section A: General, Atomic and Solid State Physics*, vol. 260, no. 1-2, pp. 4-9.

}

TY - JOUR

T1 - Statistical mechanics of self-gravitating system

T2 - Cluster expansion method

AU - Iguchi, Osamu

AU - Kurokawa, Tomomi

AU - Morikawa, Masahiro

AU - Nakamichi, Akika

AU - Sota, Yasuhide

AU - Tatekawa, Takayuki

AU - Maeda, Keiichi

PY - 1999/9/6

Y1 - 1999/9/6

N2 - 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.

AB - 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.

KW - Self-gravitating system

KW - Statistical mechanics

UR - http://www.scopus.com/inward/record.url?scp=0347245419&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0347245419&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0347245419

VL - 260

SP - 4

EP - 9

JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

SN - 0375-9601

IS - 1-2

ER -