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- W2980926411 abstract "In traditional open quantum systems, the baths are usually traced out so that only the system information is left in the equations of motion. However, recent studies reveal that using only the system degrees of freedom can be insufficient. In this work, we develop a stochastic c-number Langevin equation method which can conveniently access the bath information. In our method, the studied quantities are the expectation values of operators which can contain both system operators and bath operators. The dynamics of the operators of interest is formally divided into separate system and bath parts, with auxiliary stochastic fields. After solving the independent stochastic dynamics of the system part and the bath part, we can recombine them by taking the average over these stochastic fields to obtain the desired quantities. Several applications of the theory are highlighted, including the pure dephasing model, the spin-boson model, and an optically excited quantum dot coupled to a bath of phonons." @default.
- W2980926411 created "2019-10-25" @default.
- W2980926411 creator A5023191643 @default.
- W2980926411 creator A5032367525 @default.
- W2980926411 creator A5048800312 @default.
- W2980926411 creator A5049030739 @default.
- W2980926411 creator A5061984172 @default.
- W2980926411 date "2019-10-14" @default.
- W2980926411 modified "2023-10-12" @default.
- W2980926411 title "Accessing the bath information in open quantum systems with the stochastic <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:mi>c</mml:mi></mml:mrow></mml:math> -number Langevin equation method" @default.
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