Quantum Brownian motion without quantum correlations
Abstract
We investigate the entanglement properties of the joint state of the distinguished quantum system and its environment in the quantum Brownian motion model. This model is a frequent starting point for investigations of environment-induced superselection. We find that there exists a large class of initial states for which no entanglement will be created between the system of salient interest and the environment. This analysis, which makes use of recent results on continuous-variable entanglement, shows that environment-induced superselection in quantum Brownian motion does not necessarily rely on genuine quantum correlations.Keywords
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