Some Remarks on Alternative (or Modified) Theories of Gravity
General Relativity and Quantum Cosmology
2023-11-28 v1 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
A seminar given about 30 years ago by Ruben Aldrovandi motivates this text where some reflexions about constructing theories that modify General Relativity are made. Two particular cases, the Brans-Dicke and Unimodular Gravity ones, are discussed, in a quite qualitative way, showing on how they can address some of the most outstanding problems of General Relativity, specially the transplanckian physics and the cosmological constant problem.
Keywords
Cite
@article{arxiv.2311.14446,
title = {Some Remarks on Alternative (or Modified) Theories of Gravity},
author = {Júlio C. Fabris},
journal= {arXiv preprint arXiv:2311.14446},
year = {2023}
}
Comments
Latex file, 14 pages. To appear in the volume "Tribute to Ruben Aldrovandi" (Editora Livraria da F\'isica, S\~ao Paulo, 2024)