Quantum dissipative systems from theory of continuous measurements

Details Quantum dissipative systems from theory of continuous measurements Quantum dissipative systems from theory of continuous measurements

2002-12-18

arxiv.org/abs/quant-ph/0212104v1

Phys. Lett. A 308, 243-248 (2003).

Physics

Quantum Physics

10 pages in LATEX

Scientific paper

10.1016/S0375-9601(03)00057-4

We apply the restricted-path-integral (RPI) theory of non-minimally disturbing continuous measurements for correct description of frictional Brownian motion. The resulting master equation is automatically of the Lindblad form, so that the difficulties typical of other approaches do not exist. In the special case of harmonic oscillator the known familiar master equation describing its frictionally driven Brownian motion is obtained. A thermal reservoir as a measuring environment is considered.

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