f(R) gravity cosmology in scalar degree of freedom

National Conference on Contemporary Issues in High Energy Physics and Cosmology

Goswami, Umananda Dev^1 ; Deka, Kabita^1

Department of Physics, Dibrugarh University, Dibrugarh 786004, Assam, India^1

关键词: Accelerated expansion;    Cosmological evolution;    Cosmological parameters;    Degree of freedom;    Gravity model;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/481/1/012009/pdf
DOI  :  10.1088/1742-6596/481/1/012009

来源: IOP

【 摘 要 】

The models of f(R) gravity belong to an important class of modified gravity models where the late time cosmic accelerated expansion is considered as the manifestation of the large scale modification of the force of gravity. f(R) gravity models can be expressed in terms of a scalar degree of freedom by explicit redefinition of model's variable. Here we report about the study of the features of cosmological parameters and hence the cosmological evolution using the scalar degree of freedom of the f(R) ξRngravity model in the Friedmann-Lemaiˆtre-Robertson-Walker (FLRW) background.