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Evaluations on Some Perturbative Quantum Dissipation Approaches
张影, 丁津津*, 徐瑞雪
Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
Abstract:
We compare the results of some perturbative quantum dissipation approaches to the exact linear absorption of two state systems. The considered approximate methods are the so-called complete second-order quantum dissipation theories, in either the chronological ordering prescription or the correlated driving-dissipation form. Analytical results can be derived for the linear absorption of two-state systems. Assessments on their applicability are then made by comparison to the exact results.
Key words:  Quantum dissipation, Perturbation theory, Absorption spectroscopy, Corre-lated driving-dissipation equation
FundProject:
量子耗散微扰方法的适用性
Ying Zhang, Jin-jin Ding*, Rui-xue Xu
中国科学技术大学合肥微尺度物质科学国家实验室,化学物理系,合肥230026
摘要:
将微扰量子耗散理论得出的两态线性吸收光谱与严格结果相比较. 所考虑的近似理论为两套完备两阶量子耗散方程,其一为标准的编时微扰方法,另一为所谓的完备二阶驱动耗散耦合方程. 对于两态线性吸收光谱,可以得到解析解,将结果与严格公式比较,来评估这两种方法的适用性和应用范围.
关键词:  量子耗散,微扰理论,吸收光谱,驱动耗散耦合方程
DOI:10.1088/1674-0068/23/06/655-658
分类号: