Modified Gravity Theories Based on the Non-canonical Volume-Form Formalism

D. Benisty, E. Guendelman, A. Kaganovich, E. Nissimov, S. Pacheva

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

Abstract

We present a concise description of the basic features of gravity-matter models based on the formalism of non-canonical spacetime volume-forms in its two versions: (a) the method of non-Riemannian volume-forms (metric-independent covariant volume elements) and (b) the dynamical spacetime formalism. Among the principal outcomes we briefly discuss: (i) quintessential universe evolution with a gravity-“inflaton”-assisted suppression in the “early” universe and, respectively, dynamical generation in the “late” universe of Higgs spontaneous electroweak gauge symmetry breaking; (ii) unified description of dark energy and dark matter as manifestations of a single material entity—a second scalar field “darkon”; (iii) unification of dark energy and dark matter with diffusive interaction among them; (iv) explicit derivation of a stable “emergent universe” solution, i.e., a creation without Big Bang; (v) mechanism for suppression of 5-th force without fine-tuning.

Original languageEnglish
Title of host publicationLie Theory and Its Applications in Physics, 2019
EditorsVladimir Dobrev
PublisherSpringer
Pages239-252
Number of pages14
ISBN (Print)9789811577741
DOIs
StatePublished - 1 Jan 2020
Event13th International Workshop on Lie Theory and Its Applications in Physics, LT 2019 - Varna, Bulgaria
Duration: 17 Jun 201923 Jun 2019

Publication series

NameSpringer Proceedings in Mathematics and Statistics
Volume335
ISSN (Print)2194-1009
ISSN (Electronic)2194-1017

Conference

Conference13th International Workshop on Lie Theory and Its Applications in Physics, LT 2019
Country/TerritoryBulgaria
CityVarna
Period17/06/1923/06/19

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