Quantum to classical transition in the Horava-Lifshitz quantum cosmology

• Type: Article in International Scientific Journal
• Date: 2018

Authors

Bernardini, AE (Author) Other; Leal, P (Author) Other; Bertolami, O (Author) FCUP

Journal

Title: Journal of Cosmology and Astroparticle Physics

Vol. 2018

Pages: 025-025

ISSN: 1475-7516

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 12 Citations

Scopus - 13 Citations

Other information

Authenticus ID: P-00N-MM5

DOI: 10.1088/1475-7516/2018/02/025

Abstract (EN): A quasi-Gaussian quantum superposition of Horava-Lifshitz (HL) stationary states is built in order to describe the transition of the quantum cosmological problem to the related classical dynamics. The obtained HL phase-space superposed Wigner function and its associated Wigner currents describe the conditions for the matching between classical and quantum phase-space trajectories. The matching quantum superposition parameter is associated to the total energy of the classical trajectory which, at the same time, drives the engendered Wigner function to the classical stationary regime. Through the analysis of the Wigner flows, the quantum fluctuations that distort the classical regime can be quanti fied as a measure of (non) classicality. Finally, the modifications to the Wigner currents due to the inclusion of perturbative potentials are computed in the HL quantum cosmological context. In particular, the inclusion of a cosmological constant provides complementary information that allows for connecting the age of the Universe with the overall stiff matter density profile.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 37