Relaxation of vacuum energy in q-theory
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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2017-08-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
10
268-277
268-277
Series
Journal of Experimental and Theoretical Physics, Volume 125, issue 2
Abstract
The q-theory formalism aims to describe the thermodynamics and dynamics of the deep quantum vacuum. The thermodynamics leads to an exact cancellation of the quantum-field zero-point-energies in equilibrium, which partly solves the main cosmological constant problem. But, with reversible dynamics, the spatially flat Friedmann–Robertson–Walker universe asymptotically approaches the Minkowski vacuum only if the Big Bang already started out in an initial equilibrium state. Here, we extend q-theory by introducing dissipation from irreversible processes. Neglecting the possible instability of a de-Sitter vacuum, we obtain different scenarios with either a de-Sitter asymptote or collapse to a final singularity. The Minkowski asymptote still requires fine-tuning of the initial conditions. This suggests that, within the q-theory approach, the decay of the de-Sitter vacuum is a necessary condition for the dynamical solution of the cosmological constant problem.Description
| openaire: EC/H2020/694248/EU//TOPVAC
Keywords
Nuclei, Particles, Fields, Gravitation, Astrophysics
Other note
Citation
Klinkhamer , F R , Savelainen , M & Volovik , G E 2017 , ' Relaxation of vacuum energy in q-theory ' , Journal of Experimental and Theoretical Physics , vol. 125 , no. 2 , pp. 268-277 . https://doi.org/10.1134/S1063776117080052
