English

The semiclassical tunneling probability in quantum cosmologies with varying speed of light

High Energy Physics - Theory 2007-05-23 v2

Abstract

In quantum cosmology the closed universe can spontaneously nucleate out of the state with no classical space and time. The semiclassical tunneling nucleation probability can be estimated as Pexp(α2/Λ)\emph{P}\sim\exp(-\alpha^2/\Lambda) where α\alpha=const and Λ\Lambda is the cosmological constant. In classical cosmology with varying speed of light c(t) (VSL) it is possible to solve the horizon problem, the flatness problem and the Λ\Lambda-problem if c=sa^n with s=const and n<-2. We show that in VSL quantum cosmology with n<-2 the semiclassical tunneling nucleation probability is Pexp(β2Λk)\emph{P}\sim\exp(-\beta^2\Lambda^k) with beta=const and k>0. Thus, the semiclassical tunneling nucleation probability in VSL quantum cosmology is very different from this one in quantum cosmology with c=const. In particular, this one is strongly suppressed for large values of Λ\Lambda.

Keywords

Cite

@article{arxiv.hep-th/0410231,
  title  = {The semiclassical tunneling probability in quantum cosmologies with varying speed of light},
  author = {A. V. Yurov and V. A. Yurov},
  journal= {arXiv preprint arXiv:hep-th/0410231},
  year   = {2007}
}

Comments

9 pages, 5 figures, aknowledgement added