{ "id": "1701.01027", "version": "v1", "published": "2016-12-26T14:21:22.000Z", "updated": "2016-12-26T14:21:22.000Z", "title": "The Starobinsky model within the $f(R,T)$ formalism as a cosmological model", "authors": [ "P. H. R. S. Moraes", "R. A. C. Correa", "G. Ribeiro" ], "categories": [ "gr-qc", "hep-th" ], "abstract": "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 $R+\\alpha R^{2}$ and $f(T)=\\gamma T$, with $\\alpha$ and $\\gamma$ 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.", "revisions": [ { "version": "v1", "updated": "2016-12-26T14:21:22.000Z" } ], "analyses": { "keywords": [ "cosmological model", "starobinsky model", "non-trivial feature", "functional form", "starobinksy model" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }