Quantum Brownian motion under rapid periodic forcing
نویسندگان
چکیده
We study the steady state behaviour of a confined quantum Brownian particle subjected to a space-dependent, rapidly oscillating time-periodic force. To leading order in the period of driving, the result of the oscillating force is an effective static potential which has a quantum dissipative contribution, VQD, which adds on to the classical result. This is shown using a coherent state representation of bath oscillators. VQD is evaluated exactly in the case of an Ohmic dissipation bath. It is strongest for intermediate values of the damping, where it can have pronounced effects. PACS numbers: 05.30.-d, 03.65.Yz, 42.50.Lc Quantum Brownian motion under rapid periodic forcing 2
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