期刊
JOURNAL OF CHEMICAL PHYSICS
卷 148, 期 11, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4991779
关键词
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资金
- Ministry of Science and Technology of China [2017YFA0204904, 2016YFA0400904]
- Natural Science Foundation of China [21633006, 21373191]
- Fundamental Research Funds for Central Universities [2030020028]
The quest of an exact and nonperturbative treatment of quantum dissipation in nonlinear coupling environments remains in general an intractable task. In this work, we address the key issues toward the solutions to the lowest nonlinear environment, a harmonic bath coupled both linearly and quadratically with an arbitrary system. To determine the bath coupling descriptors, we propose a physical mapping scheme, together with the prescription reference invariance requirement. We then adopt a recently developed dissipaton equation of motion theory [R. X. Xu et al., Chin. J. Chem. Phys. 30, 395 (2017)], with the underlying statistical quasi-particle (dissipaton) algebra being extended to the quadratic bath coupling. We report the numerical results on a two-level system dynamics and absorption and emission line shapes. Published by AIP Publishing.
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