SPACE, TIME AND FUNDAMENTAL INTERACTIONS

EXACT SOLUTIONS IN MODIFIED GRAVITY THEORIES

Tripathy S.K., Mishra B.

In this paper, we have reviewed the limitations in the General Relativity theory and the requirement for geometrical dark energy models. Actions for different geometrical dark energy models have been discussed. Specifically, two matter geometry coupling models within the Einstein-Hilbert action have been investigated. The basic equations leading to the discussion of the dynamical aspects of the Universe are derived and some examples of obtaining exact solutions in these two models are discussed.