Accelerating cosmologies in Lovelock gravity with dilaton

Understand

For the description of the Universe expansion, compatible with observational data, a model of modified gravity - Lovelock gravity with dilaton - is investigated.

• D-dimensional space with 3- and (D-4)-dimensional maximally symmetric subspaces is considered.
• Space without matter and space with perfect fluid are under test.
• In various forms of the theory under way (third order without dilaton and second order - Einstein-Gauss-Bonnet gravity - with dilaton and without it) stationary, power-law, exponential and exponent-of-exponent form cosmological solutions are obtained.