Work

Scale invariance, unimodular gravity and dark energy

Year: 2008

Type: article

Abstract: We demonstrate that the combination of the ideas of unimodular gravity, scale invariance, and the existence of an exactly massless dilaton leads to the evolution of the universe supported by present observations: inflation in the past, followed by the radiation and matter dominated stages and accelerated expansion at present. All mass scales in this type of theories come from one and the same source.

Source: Physics Letters B

DOI: 10.1016/j.physletb.2008.11.054

Authors: Mikhail Shaposhnikov, Daniel Zenhäusern

Institution: École Polytechnique Fédérale de Lausanne

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid:

Funders: National Science Foundation, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung