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TitleQuantum Brownian Motion Revisited [electronic resource] : Extensions and Applications / by Aniello Lampo, Miguel Ángel García March, Maciej Lewenstein
ImprintCham : Springer International Publishing : Imprint: Springer, 2019
Edition 1st ed. 2019
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Descript VI, 109 p. 22 illus., 20 illus. in color. online resource


Quantum Brownian motion represents a paradigmatic model of open quantum system, namely a system inextricably coupled to the surrounding environment. Such a model is largely used in physics, for instance in quantum foundations to approach in a quantitative manner the quantum-to-classical transition, but also for more practical purposes as the estimation of decoherence in quantum optics experiments. This book presents the main techniques aimed to treat the dynamics of the quantum Brownian particle: Born-Markov master equation, Lindblad equation and Heisenberg equations formalism. Particular attention is given to the interaction between the particle and the bath depends non-linearly on the position of the former. This generalization corresponds to the case in which the bath is not homogeneous. An immediate application is the Bose polaron, specifically an impurity embedded in an ultracold gas


Introduction -- Classical Brownian motion -- Quantum Brownian motion -- Non-linear quantum Brownian motion -- A Lindblad model for quantum Brownian motion -- Heisenberg equations approach -- Conclusions and perspectives -- Heisenberg principle for density operators -- Gaussian approximation -- Bibliography

Quantum theory Statistical physics Quantum Physics. Statistical Physics and Dynamical Systems. Low Temperature Physics. Quantum Optics. Quantum Gases and Condensates.


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