Journal
CHEMICAL PHYSICS
Volume 375, Issue 2-3, Pages 209-215Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chemphys.2010.05.024
Keywords
Harmonic oscillator; Dissipation; Non-Markovian; Phase-space
Funding
- Colciencias and Universidad Nacional de Colombia
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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. (C) 2010 Elsevier B. V. All rights reserved.
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