High Energy Particle Physics

   

On a Stochastic Model of Inflationary Cosmology

Authors: Ervin Goldfain

Observational evidence for the accelerated expansion of the Universe raises a fundamental challenge to standard cosmological models. It is generally presumed that acceleration of cosmic expansion emerges from an unknown physical component called dark energy whose contributions in negative pressure and energy density are substantial. One of the unsettled questions posed by the dark energy hypothesis relates to the magnitude of the cosmological constant: the observed vacuum energy density is exceedingly small as compared to predictions of quantum field physics. In this work we develop a derivation of the cosmological constant based on classical diffusion theory. Dynamics of the dark energy is modeled using the Langevin equation of a damped harmonic field in steady contact with a chaotic reservoir of vacuum fluctuations. The field evolves in the Friedmann-Robertson-Walker metric and dissipation arises as a result of expansion. The asymptotic limit of this process corresponds to setting the self-interaction gravity scale as the largest temperature of the reservoir. Predictions on vacuum energy density and cosmological constant are shown to be consistent with current experimental bounds.

Comments: recovered from sciprint.org

Download: PDF

Submission history

[v1] 25 Jun 2007

Unique-IP document downloads: 41 times

Articles available on viXra.org are pre-prints that may not yet have been verified by peer-review and should therefore be treated as preliminary and speculative. Nothing stated should be treated as sound unless confirmed and endorsed by a concensus of independent qualified experts. In particular anything that appears to include financial or legal information or proposed medical treatments should not be taken as such. Vixra.org will not be responsible for any consequences of actions that result from any form of use of any documents on this website.

Add your own feedback and questions here:
You are equally welcome to be positive or negative about any paper but please be polite. If you are being critical you must mention at least one specific error, otherwise your comment will be deleted as unhelpful.

comments powered by Disqus