2016/12/26 by P. H. R. S. Moraes, Moraes, P. H. R. S., R. A. C. Correa +3
Earth and Planetary Sciences · Physics and Astronomy · #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #Geophysics and Gravity Measurements #High Energy Physics - Theory (hep-th) #Solar and Space Plasma Dynamics
paper · pdf · doi:10.48550/arxiv.1701.01027
openalex publication_date 2016/12/26 · openalex created_date 2017/01/26 · openalex updated_date 2026/07/28
In this paper we derive a cosmological model from the f(R,T) theory of gravity, for which R is the Ricci scalar and T is the trace of the energy-momentum tensor. We consider f(R,T)=f(R)+f(T), with f(R) being the Starobinksy model R+αR2 and f(T)=γT, with α and γ constants. We find that from such a functional form, it is possible to describe the cosmological scenario of a radiation-dominated universe, which has shown to be a non-trivial feature within the f(R,T) formalism.