Trace forms for the generalized Wigner functions

Details Trace forms for the generalized Wigner functions Trace forms for the generalized Wigner functions

1997-05-12

arxiv.org/abs/quant-ph/9705020v1

Nuovo Cim. B112 (1997) 881-888

Physics

Quantum Physics

Accepted on Nuovo Cimento B

Scientific paper

We derive simple formulas connecting the generalized Wigner functions for $s$-ordering with the density matrix, and vice-versa. These formulas proved very useful for quantum mechanical applications, as, for example, for connecting master equations with Fokker-Planck equations, or for evaluating the quantum state from Monte Carlo simulations of Fokker-Planck equations, and finally for studying positivity of the generalized Wigner functions in the complex plane.

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