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Kω ? Open-source library for the shifted Krylov subspace method of the form (zI?H)x=b
https://repository.lib.tottori-u.ac.jp/records/7158
https://repository.lib.tottori-u.ac.jp/records/7158c1c5dda2-96d6-4a6e-bf72-a7eee06a7ac4
名前 / ファイル | ライセンス | アクション |
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cpc258_j.cpc.2020.107536.pdf (825.2 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-07-13 | |||||
タイトル | ||||||
タイトル | Kω ? Open-source library for the shifted Krylov subspace method of the form (zI?H)x=b | |||||
言語 | en | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | Numerical linear algebra | |||||
キーワード | ||||||
主題 | Shifted linear equations | |||||
キーワード | ||||||
主題 | Krylov subspace method | |||||
キーワード | ||||||
主題 | Quantum lattice models | |||||
キーワード | ||||||
言語 | en | |||||
主題 | Numerical linear algebra | |||||
キーワード | ||||||
言語 | en | |||||
主題 | Shifted linear equations | |||||
キーワード | ||||||
言語 | en | |||||
主題 | Krylov subspace method | |||||
キーワード | ||||||
言語 | en | |||||
主題 | Quantum lattice models | |||||
資源タイプ | ||||||
資源タイプ | journal article | |||||
著者 |
星, 健夫
× 星, 健夫× Kawamura, Mitsuaki× Yoshimi, Kazuyoshi× Motoyama, Yuichi× Misawa, Takahiro× Yamaji, Youhei× Todo, Synge× Kawashima, Naoki× Sogabe, Tomohiro |
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著者所属(英) | ||||||
言語 | en | |||||
値 | Department of Applied Mathematics and Physics, Tottori University | |||||
著者所属(英) | ||||||
言語 | en | |||||
値 | Institute for Solid State Physics, University of Tokyo | |||||
著者所属(英) | ||||||
言語 | en | |||||
値 | Institute for Solid State Physics, University of Tokyo | |||||
著者所属(英) | ||||||
言語 | en | |||||
値 | Institute for Solid State Physics, University of Tokyo | |||||
著者所属(英) | ||||||
言語 | en | |||||
値 | Institute for Solid State Physics, University of Tokyo | |||||
著者所属(英) | ||||||
言語 | en | |||||
値 | Department of Applied Physics, University of Tokyo | |||||
著者所属(英) | ||||||
言語 | en | |||||
値 | Department of Physics, University of Tokyo / Institute for Solid State Physics, University of Tokyo | |||||
著者所属(英) | ||||||
言語 | en | |||||
値 | Institute for Solid State Physics, University of Tokyo | |||||
著者所属(英) | ||||||
言語 | en | |||||
値 | Department of Applied Physics, Nagoya University | |||||
抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | We develop Kω, an open-source linear algebra library for the shifted Krylov subspace methods. The methods solve a set of shifted linear equations (zkI−H)x(k)=b(k=0,1,2,…) for a given matrix H and a vector b, simultaneously. The leading order of the operational cost is the same as that for a single equation. The shift invariance of the Krylov subspace is the mathematical foundation of the shifted Krylov subspace methods. Applications in materials science are presented to demonstrate the advantages of the algorithm over the standard Krylov subspace methods such as the Lanczos method. We introduce benchmark calculations of (i) an excited (optical) spectrum and (ii) intermediate eigenvalues by the contour integral on the complex plane. In combination with the quantum lattice solver HΦ, Kω can realize parallel computation of excitation spectra and intermediate eigenvalues for various quantum lattice models. | |||||
書誌情報 |
Computer Physics Communications en : Computer Physics Communications 巻 258, 発行日 2021-01-31 |
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出版者 | ||||||
出版者 | Elsevier | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00104655 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.cpc.2020.107536 | |||||
権利 | ||||||
権利情報 | © 2020 The Authors. Published by Elsevier B.V. http://creativecommons.org/licenses/by/4.0/ | |||||
情報源 | ||||||
関連名称 | Hoshi, Takeo. Kawamura, Mitsuaki. Yoshimi, Kazuyoshi. et al. Kω — Open-source library for the shifted Krylov subspace method of the form (zI−H)x=b. Computer Physics Communications. 258. 107536. 2021-01-31. | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://www.sciencedirect.com/science/article/pii/S0010465520302551 | |||||
関連名称 | https://www.sciencedirect.com/science/article/pii/S0010465520302551 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |