Geometric Perfect Fluids from Extended Gravity
General Relativity and Quantum Cosmology
2022-02-22 v2 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
A main issue in cosmology and astrophysics is whether the dark sector phenomenology originates from particle physics, then requiring the detection of new fundamental components, or it can be addressed by modifying General Relativity. Extended Theories of Gravity are possible candidates aimed in framing dark energy and dark matter in a comprehensive geometric view. Considering the concept of perfect scalars, we show that the field equations of such theories naturally contain perfect fluid terms. Specific examples are developed for the Friedman-Lema\^itre-Roberson-Walker metric.
Cite
@article{arxiv.2201.08705,
title = {Geometric Perfect Fluids from Extended Gravity},
author = {Salvatore Capozziello and Carlo Alberto Mantica and Luca Guido Molinari},
journal= {arXiv preprint arXiv:2201.08705},
year = {2022}
}
Comments
7 pages, accepted for publication in Europhysics Letters