Revealing virtual processes of a quantum Brownian particle in the phase space
نویسنده
چکیده
The short time dynamics of a quantum Brownian particle in a harmonic potential is studied in the phase space. An exact non-Markovian analytic approach to calculate the time evolution of the Wigner function is presented. The dynamics of the Wigner function of an initially squeezed state is analyzed. It is shown that virtual exchanges of energy between the particle and the reservoir, characterizing the nonLindblad short time dynamics where system-reservoir correlations are not negligible, show up in the phase space. Submitted to: J. Opt. B: Quantum Semiclass. Opt. PACS numbers: 03.65.Ta, 42.50 Ct, 03.65.Yz Revealing virtual processes... 2
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Revealing virtual processes in the phase space
The short time dynamics of a quantum Brownian particle in a harmonic potential is studied in the phase space. An exact non-Markovian analytic approach to calculate the time evolution of the Wigner function is presented. The dynamics of the Wigner function of an initially squeezed state is analyzed. It is shown that virtual exchanges of energy between the particle and the reservoir, characterizi...
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تاریخ انتشار 2006