Work

Gravity Models with Nonlinear Symmetry Realization

Year: 2021

Type: article

Abstract: Validity of three gravity models with non-linear realization of conformal symmetry previously discussed in literature is addressed. Two models are found to be equivalent up to a change of coset coordinates. It was found that models contain ghost degrees of freedom that may be excluded by an introduction of an additional symmetry to the target space. One model found to be safe in early universe. The others found to lack spin-2 degrees of freedom and to have peculiar coupling to matter degrees of freedom.

Source: Universe

DOI: 10.3390/universe7120501

Authors: Stanislav Alexeyev, Daniil Krichevskiy, Boris Latosh

Institutions: Lomonosov Moscow State University, University of Bern, Bauman Moscow State Technical University, Joint Institute for Nuclear Research, Dubna State University

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,944

OpenAlex ID: W3202049604

FWCI:

Cites: 29

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Related to: 20