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Non-Markovian weak coupling limit of quantum Brownian motion | | Sabrina Maniscalco
; Jyrki Piilo
; Kalle-Antti Suominen
; | | Date: |
5 Dec 2008 | | Abstract: | We derive and solve analytically the non-Markovian master equation for
harmonic quantum Brownian motion proving that, for weak system-reservoir
couplings and high temperatures, it can be recast in the form of the master
equation for a harmonic oscillator interacting with a squeezed thermal bath.
This equivalence guarantees preservation of positivity of the density operator
during the time evolution and allows one to establish a connection between the
dynamics of Schr"odinger cat states in squeezed environments and
environment-induced decoherence in quantum Brownian motion. | | Source: | arXiv, 0812.1096 | | Services: | Forum | Review | PDF | Favorites | |
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