Abstract
One approach to approximate dynamics of quantum systems is to consider the classical time evolution of initial configurations which are sampled from the Wigner function, a (quasi-)probability distribution in phase space underlying the initial quantum state. This ansatz is called the truncated Wigner approximation and it can be adapted for spin-1/2 systems providing the discrete truncated Wigner approximation. In comparison to mean-field approximations, this simulation method includes quantum fluctuations resulting from sampling the initial configuration and averaging over the outcome of many classical trajectories calculated from different initial states.
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