Nonclassical phase-space trajectories for the damped harmonic quantum oscillator

Details Nonclassical phase-space trajectories for the damped harmonic quantum oscillator Nonclassical phase-space trajectories for the damped harmonic quantum oscillator

2010-05-20

arxiv.org/abs/1005.3839v1

Chem. Phys. 375, 209-215 (2010)

Physics

Quantum Physics

8 pages, 3 figures, accepted for publication in Chemical Physics

Scientific paper

10.1016/j.chemphys.2010.05.024

The phase-space path-integral approach to the damped harmonic oscillator is analyzed beyond the Markovian approximation. It is found that pairs of nonclassical trajectories contribute to the path-integral representation of the Wigner propagating function. Due to the linearity of the problem, the sum coordinate of a pair still satisfies the classical equation of motion. Furthermore, it is shown that the broadening of the Wigner propagating function of the damped oscillator arises due to the time-nonlocal interaction mediated by the heat bath.

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