The European Physical Journal C · 2018 · 20 citations · 46 references
Natural SciencesPhysicsCosmologyGravitationTheoretical PhysicsCosmological ParametersEinstein Field EquationsGeneral RelativityInflationary CosmologyObservational CosmologyPrimordial PerturbationsCurvatureGravitational PerturbationsPrimordial Curvature PerturbationsPrimordial Power SpectrumPrimordial Tensor PerturbationsScalar-tensor GravitySpectral IndexTensor-to-scalar Ratio
Viability of the super inflation scenario is discussed in F(T) modified teleparallel gravity. We calculate the power spectrum of the primordial curvature and tensor perturbations, and we derive two important parameters corresponding to these perturbations, i.e., spectral index parameter $$n_{s}$$ and scalar-to-tensor ratio r. We observe that the super inflation scenario provides a nearly scale invariant power spectrum of scalar and tensor perturbations in the observational bounds of $$n_{s}$$ and r, according to choosing the proper values interval of the power-term of the scale factor, $$a\sim t^{h}$$ .
46
A new type of isotropic cosmological models without singularity
Alexei A. Starobinsky · Physics Letters B · 1980 · 7.7K citations
Natural Sciences, Physics, Cosmology +16
Theory of cosmological perturbations
Viatcheslav Mukhanov · Physics Reports · 1992 · 3.6K citations · Full text
Natural Sciences, Astronomy, Physics +12
Andrei Linde · Physics Letters B · 1983 · 3.3K citations