Work

The radiation instability in modified gravity

Year: 2021

Type: article

Abstract: We study the problem of the instability of inhomogeneous radiation universes in quadratic Lagrangian theories of gravity written as a system of evolution equations with constraints. We construct formal series expansions and show that the resulting solutions have a smaller number of arbitrary functions than that required in a general solution. These results continue to hold for more general polynomial extensions of general relativity.

Source: International Journal of Modern Physics A

DOI: 10.1142/s0217751x21500603

Authors: Spiros Cotsakis, Dimitrios Trachilis

Institutions: Peoples' Friendship University of Russia, University of the Aegean, American University of the Middle East

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W3111401972

FWCI:

Cites: 17

Cited by: 2

Related to: 20