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Time-reversibility, instability and thermodynamics in n-body systems interacting with long-range potentials
http://hdl.handle.net/2297/32832
http://hdl.handle.net/2297/328327c256af8-4953-477f-b611-8584a91b6d0c
名前 / ファイル | ライセンス | アクション |
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TE-PR-KMATSU-N-151.pdf (567.5 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-10-03 | |||||
タイトル | ||||||
タイトル | Time-reversibility, instability and thermodynamics in n-body systems interacting with long-range potentials | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Komatsu, Nobuyoshi
× Komatsu, Nobuyoshi |
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書誌情報 |
Procedia IUTAM 巻 5, p. 151-159, 発行日 2012-01-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2210-9838 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.piutam.2012.06.019 | |||||
出版者 | ||||||
出版者 | Elsevier | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Long-range attractive potentials cause self-gravitating N-body systems to exhibit not only chaotic behavior but also peculiar features such as gravothermal catastrophe, negative specific heat and nonextensive statistical mechanics. Especially when its potential energy is significantly dominated, a system should gradually evolve from quasiequilibrium states through collapses to core-halo states. In dynamical evolution, velocity distributions are generally expected to monotonically relax from non-Gaussian towards Gaussian (Maxwell-Boltzmann) distributions. To clarify the velocity relaxation, we numerically examine the long-term evolution of a self-gravitating N-body system enclosed in a spherical container with adiabatic walls. We found that the velocity distribution non-monotonically relaxes from a non-Gaussian distribution to a Gaussian-like distribution when a core forms rapidly through the collapse process. © 2012 Published by Elsevier Ltd. | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.elsevier.com/locate/issn/22109838 |