De Sitter and power-law solutions in some models of modified gravity

Abstract

Inspired by some recent works of Lovelock Brans-Dicke gravity and mimetic gravity, cosmology solutions in extensions of these two modified gravities are investigated. A non-local term is added to the Lovelock Brans-Dicke action and Gauss-Bonnet terms to the mimetic action,correspondingly. De Sitter and power scale factor solutions are then obtained in both theories. They can provide natural new approaches to a more accurate description of the unverse evolution.

arXiv comment10 pages

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Cited by in corpus (7)

• Recovering a MOND-like acceleration law in mimetic gravity
• The key role of Lagrangian multiplier in mimetic gravitational theory in the frame of isotropic compact star
• Consistency between black hole and mimetic gravity -- Case of $(2+1)$-dimensional gravity
• Topological black holes in mimetic gravity
• Structure formation in mimetic gravity
• Black holes with Lagrange multiplier and potential in mimetic-like gravitational theory: multi-horizon black holes
• Isotropic stellar model in mimetic theory