The Constraints on the Generalized f(R) Gravitational Model by the Generalized Second Law of Thermodynamics

The generalized f(R) gravity with curvature-matter coupling is studied in this paper. The generalized second law of thermodynamics (GSL) can be given by considering the FRW universe filled only with ordinary matter enclosed by the dynamical apparent horizon with the Hawking temperature. Furthermore, as a concrete example, by utilizing the GSL, the constraints on the gravitational model are also discussed.