Entropic accelerating universe

Damien Easson, Paul H. Frampton, George F. Smoot

Research output: Contribution to journalArticle

120 Scopus citations

Abstract

To accommodate the observed accelerated expansion of the universe, one popular idea is to invoke a driving term in the Friedmann-Lemaître equation of dark energy which must then comprise 70% of the present cosmological energy density. We propose an alternative interpretation which takes into account the entropy and temperature intrinsic to the horizon of the universe due to the information holographically stored there. Dark energy is thereby obviated and the acceleration is due to an entropic force naturally arising from the information storage on the horizon surface screen. We consider an additional quantitative approach inspired by surface terms in general relativity and show that this leads to the entropic accelerating universe.

Original languageEnglish (US)
Pages (from-to)273-277
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume696
Issue number3
DOIs
StatePublished - Jan 31 2011

Keywords

  • Acceleration
  • Gravity
  • Thermodynamics

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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