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Relative species abundance of replicator dynamics with sparse interactions
http://hdl.handle.net/2237/25586
http://hdl.handle.net/2237/25586dc253695-60a9-463e-96ca-53e27bd552ab
名前 / ファイル | ライセンス | アクション |
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paper-1refd.pdf ファイル公開:2017/11/16 (494.5 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-02-16 | |||||
タイトル | ||||||
タイトル | Relative species abundance of replicator dynamics with sparse interactions | |||||
言語 | en | |||||
著者 |
Obuchi, Tomoyuki
× Obuchi, Tomoyuki× Kabashima, Yoshiyuki× Tokita, Kei |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | “This is an author-created, un-copyedited version of an article accepted for publication/published in [Journal of Statistical Mechanics: Theory and Experiment]. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at [http://doi.org/10.1088/1742-5468/2016/11/113502]” | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A theory of relative species abundance on sparsely-connected networks is presented by investigating the replicator dynamics with symmetric interactions. Sparseness of a network involves difficulty in analyzing the fixed points of the equation, and we avoid this problem by treating large self interaction u, which allows us to construct a perturbative expansion. Based on this perturbation, we find that the nature of the interactions is directly connected to the abundance distribution, and some characteristic behaviors, such as multiple peaks in the abundance distribution and all species coexistence at moderate values of u, are discovered in a wide class of the distribution of the interactions. The all species coexistence collapses at a critical value of u, u c , and this collapsing is regarded as a phase transition. To get more quantitative information, we also construct a non-perturbative theory on random graphs based on techniques of statistical mechanics. The result shows those characteristic behaviors are sustained well even for not large u. For even smaller values of u, extinct species start to appear and the abundance distribution becomes rounded and closer to a standard functional form. Another interesting finding is the non-monotonic behavior of diversity, which quantifies the number of coexisting species, when changing the ratio of mutualistic relations Δ . These results are examined by numerical simulations, which show that our theory is exact for the case without extinct species, but becomes less and less precise as the proportion of extinct species grows. | |||||
言語 | en | |||||
出版者 | ||||||
出版者 | IOP publishing | |||||
言語 | en | |||||
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 | |||||
出版タイプ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1742-5468/2016/11/113502 | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0913-5685 | |||||
書誌情報 |
en : Journal of Statistical Mechanics: Theory and Experiment 巻 2016, p. 113502-113502, 発行日 2016-11-16 |
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著者版フラグ | ||||||
値 | author | |||||
URI | ||||||
識別子 | https://doi.org/10.1088/1742-5468/2016/11/113502 | |||||
識別子タイプ | DOI | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/25586 | |||||
識別子タイプ | HDL |