Wigner phase-space distribution as a wave function
Wigner phase-space distribution as a wave function
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DOI:
10.1103/physreva.88.052108
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发表时间:
2013-11-11
影响因子:
2.9
通讯作者:
Rabitz, Herschel A.
中科院分区:
文献类型:
--
作者:
Bondar, Denys I.;Cabrera, Renan;Rabitz, Herschel A.
We demonstrate that the Wigner function of a pure quantum state is a wave function in a specially tuned Dirac bra-ket formalism and argue that the Wigner function is in fact a probability amplitude for the quantum particle to be at a certain point of the classical phase space. Additionally, we establish that in the classical limit, the Wigner function transforms into a classical Koopman-von Neumann wave function rather than into a classical probability distribution. Since probability amplitude need not be positive, our findings provide an alternative outlook on the Wigner function's negativity.