摘要The trajectory-density method of a quantum system is developed by using local Koopman and Frobenius-Perron operators. We propose a new scheme of approximation from two sets of trajectory-density mixed equations. By examining the local generation and termination of trajectories, we show how they can be adopted to the propagation of negative values of the Wigner function even if it starts off positive everywhere.
Abstract：The trajectory-density method of a quantum system is developed by using local Koopman and Frobenius-Perron operators. We propose a new scheme of approximation from two sets of trajectory-density mixed equations. By examining the local generation and termination of trajectories, we show how they can be adopted to the propagation of negative values of the Wigner function even if it starts off positive everywhere.
(General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.))
引用本文:
ZHANG Xue-Feng;ZHENG Yu-Jun. Evolution of Quantum Phase Space Distribution: a Trajectory-Density Approach[J]. 中国物理快报, 2009, 26(2): 23404-023404.
ZHANG Xue-Feng, ZHENG Yu-Jun. Evolution of Quantum Phase Space Distribution: a Trajectory-Density Approach. Chin. Phys. Lett., 2009, 26(2): 23404-023404.
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2009, Vol. 26 
