Analytical approach to the current correlation function in dissipative two-state systems |
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| Authors: | Qin Wang Cheng Jiang and Hang Zheng |
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| Institution: | (1) Department of Physics, Shanghai Jiao Tong University, Shanghai, 200030, China |
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| Abstract: | Using the spin-boson model with coupling to Ohmic bath, an analytical approach is developed to study the dynamics of the current
correlation function in dissipative two-state systems with the view of understanding the effects of environment and tunneling
on the coherent oscillation and the long-time decay of the current correlation function in these systems. An analytic expression
of current correlation function is obtained and the results agree very well with that of numerical simulations.
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| Keywords: | dissipative two-state systems coherent-incoherent transition current correlation function |
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