期刊
ANNALEN DER PHYSIK
卷 529, 期 12, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/andp.201700200
关键词
Thermo Field Dynamics; quantum dynamics
资金
- CINECA award under the ISCRA initiative [CSDYN-HP10CTEX1Q]
- University of Torino [BORR-RILO-16-02]
- Deutsche Forschungsgemeinschaft (DFG) through the DFG-Cluster of Excellence Munich-Centre for Advanced Photonics
We develop a wave-function-based method for the simulation of quantum dynamics of systems with many degrees of freedom at finite temperature. The method is inspired by the ideas of Thermo Field Dynamics (TFD). As TFD, our method is based on the doubling of the system's degrees of freedom and thermal Bogoliubov transformation. As distinct from TFD, our method implements the doubling of thermalized degrees of freedom only, and relies upon the explicitly constructed generalized thermal Bogoliubov transformation, which is not restricted to fermionic and bosonic degrees of freedom. This renders the present approach computationally efficient and applicable to a large variety of systems.
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