An algebraic condition for the approach to equilibrium of an open N-level system |
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Authors: | Herbert Spohn |
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Institution: | (1) Fachbereich Physik der Ludwig-Maximilians-Universität München, Germany |
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Abstract: | We give an algebraic condition in order that a completely positive dynamical semigroup of an N-level system has a unique (invariant) equilibrium state and that every initial state approaches this equilibrium state as t
. We apply our result to a semigroup arising in the weak coupling limit. |
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