On using the shifted minimal residual method for quantum-mechanical wave packet simulation

• Seito Hiroaki

  The University of Electro-Communications

• Hoshi Takeo

  Tottori University

• Yamamoto Yusaku

  The University of Electro-Communications

抄録

We apply the shifted minimum residual method to a shifted linear system $(A+i\sigma I){\bf x}={\bf b}$ arising from quantum-mechanical wave packet simulation and discuss its advantages and disadvantages, comparing it with the widely used COCG method. Although the method requires more vector operations per iteration than the COCG method, it enjoys such nice properties as being free from breakdown, monotonic decrease of the residual norm and applicability to Hermitian-plus-shift systems, and can be a method of choice in some cases. Application of the method to the case of multiple shifts is also discussed.

収録刊行物

• JSIAM Letters

  JSIAM Letters 11 (0), 13-16, 2019

  一般社団法人 日本応用数理学会

キーワード

• shifted linear system
• MINRES method
• COCG method
• wave packet simulation
• performance evaluation

詳細情報

• CRID: 1390845713054745344
• NII論文ID: 130007607760
• DOI: 10.14495/jsiaml.11.13
• ISSN: 18830617
• ISSN: 18830609
• Web Site: https://www.jstage.jst.go.jp/article/jsiaml/11/0/11_13/_pdf
• 本文言語コード: en
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