Cosmology in sixth-order higher-derivative theories of gravity

Carlos Aguilar, Manuel Asorey, Diego Muñoz +1

We analyze the cosmological implications of theories of gravity with quadratic curvature invariants $R^2$ and $C^{\mu \nu \rho \sigma }{C}_{\mu \nu \rho \sigma }$, and six-derivative operators $R\square R$ and $C^{μνρ…