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Von Neumann and Shannon-Wehrl entropy for squeezed states and cosmological particle production
We show that the effective coarse graining of a two-mode squeezed density matrix, implicit in the Wehrl approaches to a semiclassical phase-space distribution, leads to results in agreement with previous different definitions of entropy for the process of pair production from the vacuum. We also pre...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
1995
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1142/9789814528689_0008 http://cds.cern.ch/record/277202 |