Accelerating Quantum Universe

Simple item page
dc.creatorKuzmichev, V. E.
dc.creatorKuzmichev, V. V.
dc.date2007-12-04
dc.date2008-04-30
dc.date.accessioned2026-07-07T12:19:53Z
dc.date.available2026-07-07T12:19:53Z
dc.descriptionThe origin of negative pressure fluid (the dark energy) is investigated in the quantum model of the homogeneous, isotropic and closed universe filled with a uniform scalar field and a perfect fluid which defines a reference frame. The equations of the model are reduced to the form which allows a direct comparison between them and the equations of the Einsteinian classical theory of gravity. It is shown that quantized scalar field has a form of a condensate which behaves as an antigravitating medium. The theory predicts an accelerating expansion of the universe even if the vacuum energy density vanishes. An antigravitating effect of a condensate has a purely quantum nature. It is shown that the universe with the parameters close to the Planck ones can go through the period of exponential expansion. The conditions under which in semi-classical approximation the universe looks effectively like spatially flat with negative deceleration parameter are determined. The reduction to the standard model of classical cosmology is discussed.
dc.description15 pages, v.2 additional explanations and a few corrections are provided
dc.identifierhttps://arxiv.org/abs/0712.0465
dc.identifierhttp://arxiv.org/abs/0712.0465
dc.identifierActa Phys.Polon.B39:2003-2018,2008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/212917
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.titleAccelerating Quantum Universe
dc.typetext

Files

Collections

arXiv