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Completely Positive Quantum Dissipation
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Completely Positive Quantum Dissipation
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A completely positive master equation describing quantum dissipation for a Brownian particle is derived starting from microphysical collisions, exploiting a recently introduced approach to subdynamics of a macrosystem. The obtained equation can be cast into Lindblad form with a single generator for each Cartesian direction. Temperature dependent friction and diffusion coefficients for both position and momentum are expressed in terms of the collision cross-section.
Forward citations
Cited by 1 Pith paper
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Quantum Brownian Motion as a Classical Stochastic Process in Phase Space
For quadratic potentials, exact Caldeira-Leggett dynamics is re-derived as a signed ensemble of generalized-Langevin trajectories whose colored noise obeys the quantum fluctuation-dissipation relation at all temperatures.
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