Nonlocal Gravity: Fundamental Tetrads and Constitutive Relations

Autor:	Bahram Mashhoon
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	nonlocal gravity (NLG) constitutive relations de Sitter spacetime Mathematics QA1-939
Zdroj:	Symmetry, Vol 14, Iss 10, p 2116 (2022)
Druh dokumentu:	article
ISSN:	2073-8994
DOI:	10.3390/sym14102116
Popis:	Nonlocal gravity (NLG) is a classical nonlocal generalization of Einstein’s theory of gravitation based on a certain analogy with the nonlocal electrodynamics of media. The history dependence enters NLG through a constitutive relation involving a causal kernel that should ultimately be determined via observational data. The purpose of this paper is to reformulate nonlocal gravity such that the nonlocal aspect of the constitutive relation directly connects measurable quantities as in the nonlocal electrodynamics of media. The resulting constitutive relation turns out to coincide with the recent suggestion of Puetzfeld, Obukhov, and Hehl. With the new constitutive relation of NLG, it is possible to show that de Sitter spacetime is not a solution of NLG.
Databáze:	Directory of Open Access Journals
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