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Quantum-Classical Transition in Generic Double-Well Systems | | Takeshi Matsuo
; Yuhei Natsume
; Takeo Kato
; | | Date: |
4 Aug 2006 | | Subject: | Statistical Mechanics | | Abstract: | Thermodynamics of dissipative quantum systems with double-well potentials is studied by the path-integral Monte Carlo (PIMC) method without truncation to a two-state model. For efficient simulation at low temperatures, we develop a new scheme of local update based on approximate decomposition of the Boltzmann weight to Gaussian distributions. Localization transition induced by ohmic dissipation is clarified numerically for arbitrary potential barriers. | | Source: | arXiv, cond-mat/0608105 | | Services: | Forum | Review | PDF | Favorites | |
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