A two measure model of dark energy and dark matter

Eduardo Guendelman, Douglas Singleton, N. Yongram

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

In this work we construct a unified model of dark energy and dark matter. This is done with the following three elements: a gravitating scalar field, φ with a non-conventional kinetic term, as in the string theory tachyon; an arbitrary potential, V(φ); two measures - a metric measure ((-g) 1/2) and a non-metric measure (Φ). The model has two interesting features: (i) For potentials which are unstable and would give rise to tachyonic scalar field, this model can stabilize the scalar field. (ii) The form of the dark energy and dark matter that results from this model is fairly insensitive to the exact form of the scalar field potential.

Original languageEnglish
Article number044
JournalJournal of Cosmology and Astroparticle Physics
Volume2012
Issue number11
DOIs
StatePublished - 1 Nov 2012

Keywords

  • dark energy theory
  • dark matter theory
  • modified gravity

ASJC Scopus subject areas

  • Astronomy and Astrophysics

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