Abstract
Hu, Paz, and Zhang [B. L. Hu, J. P. Paz, and Y. Zhang, Phys. Rev. D 45, 2843 (1992)] have derived an exact master equation for quantum Brownian motion in a general environment via path integral techniques. Their master equation provides a very useful tool to study the decoherence of a quantum system due to the interaction with its environment. In this paper, we give an alternative and elementary derivation of the Hu-Paz-Zhang master equation, which involves tracing the evolution equation for the Wigner function. We also discuss the master equation in some special cases.
| Original language | English |
|---|---|
| Pages (from-to) | 2012-2019 |
| Number of pages | 8 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 53 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1996 |
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