1,411 research outputs found
-essence non-minimally coupled with Gauss-Bonnet invariant for inflation
In this paper, we investigated inflationary solutions for a subclass of
Horndeski models where a scalar field is non-minimally coupled with the
Gauss-Bonnet invariant. Examples of canonical scalar field and -essence to
support the early-time acceleration are considered. The formalism to calculate
the perturbations in FRW universe and to derive the spectral index and the
tensor-to-scalar ratio is furnished.Comment: final version, accepted in Symmetry 14 page
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