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

Autor(es)

Bernardini, Alex E. ^[1] ; Bertolami, Orfeu ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] Univ Porto, Fac Ciencias, Dept Fis & Astron, Rua Campo Alegre, P-4169007 Oporto - Portugal

^[2] Ctr Fis Porto, Rua Campo Alegre, P-4169007 Oporto - Portugal

• Tipo de documento: Artigo Científico
• Fonte: EPL; v. 120, n. 2 OCT 2017.
• Citações Web of Science: 3

Resumo

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 (AU)

• Processo FAPESP: 17/02294-2 - Correspondência clássico-quântica de cenários cosmológicos a partir da análise de Descoerência Quântica e correlações gaussianas
• Beneficiário: Alex Eduardo de Bernardini
• Modalidade de apoio: Bolsas no Exterior - Pesquisa