Abstract:Abstract:We study a new class of inflation model parametrized by the Hubble radius, such that aH ∝ exp(−αφ) n . These potentials are plateau-like, and reduce to the power-law potentials in the simplest case n = 2. We investigate the range of model parameters that is consistent with current observational constraints on the scalar spectral index and the tensor-to-scalar ratio. The amplitude of primordial gravitational waves in these models is shown to be accessible by future laser interferometers such as DECIGO.… Show more
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