Non-canonical volume-form formulation of modified gravity theories and cosmology

David Bensity, Eduardo I. Guendelman, Alexander Kaganovich, Emil Nissimov, Svetlana Pacheva

Research output: Contribution to journalReview articlepeer-review

4 Scopus citations

Abstract

A concise description is presented in the basic features of the formalism of non-canonical spacetime volume forms and its application in modified gravity theories and cosmology. The well-known unimodular gravity theory appears as a very special case. Concerning the hot issues facing cosmology now, we specifically briefly outline the construction of: (a) unified description of dark energy and dark matter as manifestations of a single material entity—a special scalar field “darkon”; (b) quintessential models of universe evolution with a gravity “inflaton”-assisted dynamical Higgs mechanism—dynamical suppression/generation of spontaneous electroweak gauge symmetry breaking in the “early”/“late” universe; (c) unification of dark energy and dark matter with diffusive interaction among them; and (d) mechanism for suppression of fifth force without fine-tuning.

Original languageEnglish
Article number46
JournalEuropean Physical Journal Plus
Volume136
Issue number1
DOIs
StatePublished - 1 Jan 2021

ASJC Scopus subject areas

  • Physics and Astronomy (all)

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