Relaxation of vacuum energy in q-theory

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

  • Karlsruhe Institute of Technology
  • Russian Academy of Sciences

Kuvaus

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.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut268-277
Sivumäärä10
JulkaisuJournal of Experimental and Theoretical Physics
Vuosikerta125
Numero2
TilaJulkaistu - 1 elokuuta 2017
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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