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Ehrenfest dynamics is purity non-preserving: a necessary ingredient for decoherence
Ehrenfest dynamics purity non-preserving necessary ingredient decoherence Chemical Physics
2012/5/28
We discuss the evolution of purity in mixed quantum/classical approaches to electronic nonadiabatic dynamics in the context of the Ehrenfest model. We claim that the evolution of a statistical Ehrenfe...
Quantum dynamics (e.g., the Schr\"odinger equation) and classical dynamics (e.g., Hamilton equations) can both be formulated in equal geometric terms: a Poisson bracket defined on a manifold. The diff...