Cosmological dynamics in six-order gravity

Abstract

We consider cosmological dynamics in generalized modified gravity theory with the $R\square R$ term added to the action of the form $R+R^N$. Influence of $R\square R$ term to the known solutions of modified gravity is described. We show that in particular case of $N=3$ these two non-Einstein terms are equally important on power-law solutions. These solutions and their stability have been studied using dynamical system approach. Some results for the case of $N\ne 3$ (including stability of de Sitter solution in the theory under investigation) have been found using other methods.

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Cited by in corpus (6)

• Phase Space Analysis of the Accelerating Multi-fluid Universe
• Cosmology in modified $f(R,T)$-gravity
• Cosmological dynamics of fourth order gravity with a Gauss-Bonnet term
• Stable super-inflating cosmological solutions in f(R)-gravity
• Dynamical stability of Minkowski space in higher order gravity
• Late-time power-law stages of cosmological evolution in teleparallel gravity with nonminimal coupling