Disordered locality as an explanation for the dark energy

Academic Article

Abstract

  • We discuss a novel explanation of the dark energy as a manifestation of macroscopic non-locality coming from quantum gravity, as proposed by Markopoulou. It has been previously suggested that in a transition from an early quantum geometric phase of the universe to a low temperature phase characterized by an emergent spacetime metric, locality might have been "disordered". This means that there is a mismatch of micro-locality, as determined by the microscopic quantum dynamics and macro-locality as determined by the classical metric that governs the emergent low energy physics. In this paper we discuss the consequences for cosmology by studying a simple extension of the standard cosmological models with disordered locality. We show that the consequences can include a naturally small vacuum energy.
  • Authors

    Publication Date

  • September 1, 2009
  • Keywords

  • astro-ph.CO
  • gr-qc
  • hep-th
  • Digital Object Identifier (doi)

    Start Page

  • 063505
  • Volume

  • 80
  • Issue

  • 6