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pro vyhledávání: '"da Silva, Jonas Pinheiro"'
Theories based on the Ricci and the trace of the energy-momentum tensor, or the short name Ricci-trace-based (RTB) theories, represent a gravitational approach based on the Ricci scalar $R$, and the trace of the energy-momentum tensor $g^{\mu\nu}T_{\
Externí odkaz:
http://arxiv.org/abs/2409.14443
We study scalar cosmological perturbations in $f(R, T)$ modified gravity theories being $T$ the trace of the energy-momentum tensor. We provide detailed equations for the matter energy density contrast. We solve then numerically to promote a comparis
Externí odkaz:
http://arxiv.org/abs/2403.07130
Publikováno v:
Physics of the Dark Universe 43 (2024) 101401
We review the status of $f(R,T)$ cosmological models, where $T$ is the trace of the energy momentum tensor $T^{\mu\nu}$. We start focusing on the modified Friedmann equations for the minimally coupled gravitational Lagrangian of the type $f(R,T)=R +\
Externí odkaz:
http://arxiv.org/abs/2303.15208
Autor:
da Silva, Jonas Pinheiro
We propose an adaptation of the Kerr-Schild method by implementing the correspondence relations (mapping) between Ricci-based Gravity (RBG) and General Relativity (GR). Basically, we generate GR known solutions from a canonical metric with a well-def
Externí odkaz:
http://arxiv.org/abs/2107.01107
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