Quantum Transfer Monte Carlo Method for Finite Temperature Properties and Quantum Molecular Dynamics Method for Dynamical Correlation Functions

Masatoshi Imada, Minoru Takahashi

研究成果: Article査読

37 被引用数 (Scopus)

抄録

A quantum transfer matrix method is proposed and examined. To obtain finite temperature properties, a small number of Monte Carlo samples for the trace summation is taken without the Monte Carlo sampling of the path integral. We introduce the method of a random orthonormal base in the Monte Carlo sampling. This makes it possible to investigate larger size systems than the exact diagonalization. An advantage of this method is that it does not have negative sign difficulty in the path integral as contrast to the usual quantum Monte Carlo method. A quantum molecular dynamics method is also proposed to investigate dynamical correlation functions.

本文言語English
ページ(範囲)3354-3361
ページ数8
ジャーナルjournal of the physical society of japan
55
10
DOI
出版ステータスPublished - 1986 10
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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