Gravity and Cosmology: Exploring the Mysteries of f(T) Gravity

A special issue of Universe (ISSN 2218-1997). This special issue belongs to the section "Gravitation".

Deadline for manuscript submissions: 30 June 2024 | Viewed by 260

Special Issue Editors


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Guest Editor
Divisão de Astrofísica, Instituto Nacional de Pesquisas Espaciais, São José dos Campos 12227-010, Brasil
Interests: gravitation; compact stars; cosmology

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Guest Editor
1. Instituto Federal Fluminense (IFF) , Campus Quissamã, Av. Amilcar Pereira da Silva, 727 Piteiras, Quissamã 28735-000, RJ, Brasil
2. Divisão de Astrofísica, Instituto Nacional de Pesquisas Espaciais, São José dos Campos 12227-010, Brasil
Interests: gravitation; compact stars; field theory

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Guest Editor
1. National Observatory of Athens, Lofos Nymfon, 11852 Athens, Greece
2. CAS Key Laboratory for Researches in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, China
3. Departamento de Matemáticas, Universidad Católica del Norte, Avda. Angamos 0610, Casilla, Antofagasta 1280, Chile
Interests: ark energy formulation; modified theories of gravity; inflationary cosmology; brane cosmology; observational cosmology
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Special Issue Information

Dear Colleagues,

The search for a consistent and complete theory of gravity is one of the great ambitions of this century. General Relativity (GR), despite its overwhelming success, has been confronted with the latest data from cosmological discoveries, for example, the supernovae observations, which indicate an accelerated expansion of the universe. In this sense, it appears to be inevitable to consider some modifications in GR. Dark energy is a possible factor to be included in GR in order to explain such an accelerated expansion, although its origin or composition is not known. In this search for the most suitable theory of gravity, it is natural to consider not only direct extensions of GR itself but also take into account different formulations, which, besides the scalar curvature R, involve other geometric invariants, such as the models with scalar torsion T.

The Teleparallel equivalent of General Relativity (TEGR) is a theory where gravitation is due to torsion and not due to curvature but it is dynamically equivalent to GR, i.e., cannot be distinguished through classical experiments. It is possible to build extended theories of gravity by modifying both GR and Teleparallel theories. Modifications in TEGR by considering the Lagrangian density as a more general function of the torsion scalar, namely, f(T), lead to second order field equations, simpler than those from alternative models, f(R), generated by extensions of curvature-based formulations. Recent works on f(T) have presented interesting cosmological and astrophysical solutions, providing alternative interpretations for the acceleration phases of the universe, for example.

The aim of this Special Issue is to explore different aspects of f(T) Gravity and related issues. Thus, it is expected to have contributions on cosmology and compact stars, as well as relevant topics related to the theory itself, i.e., what are well established issues and putative ambiguities.


Dr. Jose Carlos Neves De Araujo
Dr. Hemily Gomes Marciano Fortes
Dr. Emmanuel N. Saridakis
Guest Editors

Manuscript Submission Information

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Keywords

  • gravity
  • general relativity
  • teleparallel theory
  • torsion
  • extended teleparallel theory
  • cosmology
  • compact stars

Published Papers

This special issue is now open for submission.
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