A Quantum Monte Carlo Algorithm Realizing an Intrinsic Relaxation (General)
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概要
- 論文の詳細を見る
We propose a new quantum Monte Carlo algorithm that realizes a relaxation intrinsic to an original quantum system. The Monte Carlo dynamics satisfies the dynamic scaling relation τ〜ξ^z and is independent of the Trotter number. The finiteness of the Trotter number appears as the finite-size effect. An infinite Trotter number version of the algorithm, which enables us to observe a true relaxation of the original system, is also formulated. The strategy of the algorithm is a compromise between a conventional worldline local flip and a modern cluster loop flip. It is a local flip in the real-space direction and is a cluster flip in the Trotter direction. The new algorithm is tested using the transverse-field Ising model in two dimensions. An accurate phase diagram is obtained.
- 社団法人日本物理学会の論文
- 2003-10-15
著者
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Nakamura T
Waseda Univ. Tokyo Jpn
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中村 龍史
Department Of Applied Physics Waseda University
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Nakamura T
Department Of Applied Physics Tohoku University
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Ito Yoshiyuki
Department of Radiology, Nagoya University Graduate School of Medicine
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Nakamura Tota
Department Of Physics Tokyo Institute Of Technology
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Nakamura Tota
Department Of Applied Physics Tohoku University
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Nakayashiki Takashi
Department Of Molecular Engineering Graduate School Of Engineering Kyoto University
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Nakamura T
Institute For Molecular Science
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Nakamura Takayoshi
Research Institute For Electronic Science And Graduate School Of Environmental Earth Science Hokkaid
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Ito Yoshiyuki
Department Of Applied Physics Tohoku University:(present Address)advanced Technology Development Cen
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Ito Yoshiyuki
Department Of Applied Physics Tohoku University
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