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Quantum Brownian Motion: The Functional Integral Approach

✍ Scribed by Grabert H., Schramm P., Ingold G.-L.


Year
1988
Tongue
English
Leaves
93
Category
Library

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✦ Synopsis


The quantum mechanical dynamics of a particle coupled to a heat bath is treated by functional integral methods and a generalization of the Feynman-Vemon influence functional is derived. The extended theory describes the time evolution of nonfactorizing initial states and of equilibrium correlation functions. The theory is illuminated through exactly solvable models.


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<p><p>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 transi