Non-classicality from the phase-space flow analysis of the Weyl-Wigner quantum mechanics

• Type: Article in International Scientific Journal
• Date: 2017-10-01

Authors

Bertolami, O (Author) FCUP; Alex Bernardini (Author) Other

Journal

Title: Europhysics Letters

Vol. 120

ISSN: 0295-5075

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 14 Citations

Scopus - 16 Citations

Other information

Authenticus ID: P-00N-CRD

DOI: 10.1209/0295-5075/120/20002

Abstract (EN): A fluid analog of the information flux in the phase-space associated to purity and von Neumann entropy is identified in the Weyl-Wigner formalism of quantum mechanics. Once constrained by symmetry and positiveness, the encountered continuity equations provide novel quantifiers for non-classicality (non-Liouvillian fluidity) given in terms of quantum decoherence, purity and von Neumann entropy fluxes. Through definitions in the Weyl-Wigner formalism, one can identify the quantum fluctuations that distort the classical-quantum coincidence regime, and the corresponding quantum information profile, whenever some bounded x-p volume of the phase-space is specified. The dynamics of anharmonic systems is investigated in order to illustrate such a novel paradigm for describing quantumness and classicality through the flux of quantum information in the phase-space. Copyright (C) EPLA, 2017

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6