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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Wormholes in exponential f(R, T) gravity

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Author(s):
Moraes, P. H. R. S. [1, 2] ; Sahoo, P. K. [3]
Total Authors: 2
Affiliation:
[1] Univ Naples Federico II, Dipartimento Fis, Naples - Italy
[2] ITA, Dept Fis, BR-12228900 Sao Jose Dos Campos, SP - Brazil
[3] Birla Inst Technol & Sci Pilani, Dept Math, Hyderabad Campus, Hyderabad 500078 - India
Total Affiliations: 3
Document type: Journal article
Source: EUROPEAN PHYSICAL JOURNAL C; v. 79, n. 8 AUG 13 2019.
Web of Science Citations: 0
Abstract

Alternative gravity is nowadays an extremely important tool to address some persistent observational issues, such as the dark sector of the universe. They can also be applied to stellar astrophysics, leading to outcomes one step ahead of those obtained through General Relativity. In the present article we test a novel f(R, T) gravity model within the physics and geometry of wormholes. The f(R, T) gravity is a reputed alternative gravity theory in which the Ricci scalar R in the Einstein-Hilbert gravitational lagrangian is replaced by a general function of R and T, namely f(R, T), with T representing the trace of the energy-momentum tensor. We propose, for the first time in the literature, an exponential form for the dependence of the theory on T. We derive the field equations as well as the non-continuity equation and solve those to wormhole metric and energy-momentum tensor. The importance of applying alternative gravity to wormholes is that through these theories it might be possible to obtain wormhole solutions satisfying the energy conditions, departing from General Relativity well-known outcomes. In this article, we indeed show that it is possible to obtain wormhole solutions satisfying the energy conditions in the exponential f(R, T) gravity. Naturally, there is still a lot to do with this model, as cosmological, galactical and stellar astrophysics applications, and the reader is strongly encouraged to do so, but, anyhow, one can see the present outcomes as a good indicative for the theory. (AU)

FAPESP's process: 15/08476-0 - Gravitational waves in f(R,T) theories: polarization states and astrophysical sources
Grantee:Pedro Henrique Ribeiro da Silva Moraes
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 18/20689-7 - Gauss-Bonnet stars
Grantee:Pedro Henrique Ribeiro da Silva Moraes
Support type: Scholarships abroad - Research Internship - Post-doctor