Unification of inflation and dark energy from spontaneous breaking of scale invariance

Eduardo Guendelman, Emil Nissimov, Svetlana Pacheva

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

10 Scopus citations

Abstract

We propose a new class of gravity-matter models defined in terms of two independent non-Riemannian volume forms (alternative generally covariant integration measure densities) on the spacetime manifold. For the matter we choose appropriate scalar field potentials of exponential form so that the full gravity-matter system is invariant under global Weyl-scale symmetry. Solution of the pertinent equations of motion produce two dimensionful integration constants which spontaneously break global Weyl-scale invariance. In the resulting effective Einsteinframe gravity-matter system we obtain an effective potential for the scalar matter field which has an interesting cosmological application, namely, it allows for a unified description of both an early universe inflation and present day dark energy.

Original languageEnglish
Title of host publication8th Mathematical Physics Meeting
Subtitle of host publicationSummer School and Conference on Modern Mathematical Physics, MPHYS 2014
EditorsIgor Salom, Branko Dragovich
PublisherInstitute of Physics
Pages93-103
Number of pages11
ISBN (Electronic)9788682441434
StatePublished - 1 Jan 2014
Event8th Mathematical Physics Meeting: Summer School and Conference on Modern Mathematical Physics, MPHYS 2014 - Belgrade, Serbia
Duration: 24 Aug 201431 Aug 2014

Publication series

Name8th Mathematical Physics Meeting: Summer School and Conference on Modern Mathematical Physics, MPHYS 2014

Conference

Conference8th Mathematical Physics Meeting: Summer School and Conference on Modern Mathematical Physics, MPHYS 2014
Country/TerritorySerbia
CityBelgrade
Period24/08/1431/08/14

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