Positive Quantum Brownian Evolution
- 23 September 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 77 (13) , 2600-2603
- https://doi.org/10.1103/physrevlett.77.2600
Abstract
Using the independent oscillator model with an arbitrary system potential, we derive a quantum Brownian equation assuming a correlated total initial state. Although not of Lindblad form, the equation preserves positivity of the density operator on a restricted set of initial states.Keywords
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