Heat Transport in a Spin-Boson Model at Low Temperatures: A Multilayer Multiconfiguration Time-Dependent Hartree Study

Extending our previous work, quantum dynamic simulations are performed to study low temperature heat transport in a spin-boson model where a two-level subsystem is coupled to two independent harmonic baths. Multilayer multiconfiguration time-dependent Hartree theory is used to numerically evaluate t...

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Bibliographic Details
Published in:Entropy (Basel, Switzerland) Switzerland), 2020-09, Vol.22 (10), p.1099
Main Authors: Yang, Chou-Hsun, Wang, Haobin
Format: Article
Language:English
Subjects:
Energy
Heat
Heat transmission
heat transport
Low temperature
ML-MCTDH
Multilayers
Optics
Physical properties
quantum dynamics
Simulation
spin-boson
Subsystems
Temperature
Time dependence
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Summary:Extending our previous work, quantum dynamic simulations are performed to study low temperature heat transport in a spin-boson model where a two-level subsystem is coupled to two independent harmonic baths. Multilayer multiconfiguration time-dependent Hartree theory is used to numerically evaluate the thermal flux, for which the bath is represented by hundreds to thousands of modes. The simulation results are compared with the approximate Redfield theory approach, and the physics is analyzed versus different physical parameters.
ISSN:1099-4300
1099-4300
DOI:10.3390/e22101099