Quantum-Classical Transition in Dissipative Double-Well Systems --A Numerical Study by a New Monte Carlo Scheme-- release_3mx4uutbpjalbovno5rziho57u

by Takeshi Matsuo, Yuhei Natsume, Takeo Kato

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2006  

Abstract

Thermodynamics of dissipative quantum systems with double-well potentials is studied by the path-integral Monte Carlo (PIMC) method without truncation to the 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 the Gaussian distributions. Localization transition induced by ohmic dissipation is clarified numerically for arbitrary potential barriers.
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Type  article
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Date   2006-09-05
Version   v3
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