Are f (R, Matter) theories really relevant to cosmology?

O Lacombe, S Mukohyama, J Seitz - Journal of Cosmology and …, 2024 - iopscience.iop.org
We examine f (R, Matter) theories that directly couple the curvature R or R μν with the matter
sector in the action, in addition to the universal coupling. We argue that if the matter sector …

Matter-geometry interplay in new scalar tensor theories of gravity

M Marciu - The European Physical Journal C, 2024 - Springer
The paper studies the possible interplay between matter and geometry in scalar tensor
theories of gravitation where the energy–momentum tensor is directly coupled with the …

Gravitationally induced matter creation and cosmological applications in energy-momentum squared gravity

RAC Cipriano - 2024 - repositorio.ulisboa.pt
In this dissertation, we make a comprehensive analysis and review of f (R, TµνT µν) gravity
where R is the Ricci scalar and Tµν is the energy-momentum tensor which is often referred …