In this paper, we apply reconstruction techniques to recover the potential parameters for a particular class of single-field models, the $\alpha$-attractor (supergravity) models of inflation. This also allows to derive the inflaton vacuum expectation value at horizon crossing. We show how to use this value as one of the input variables to constrain the postaccelerated inflationary phase. We assume that the tensor-to-scalar ratio $r$ is of the order of $10^-3$ , a level reachable by the expected sensitivity of the next-generation CMB experiments.
Di Marco, A., Cabella, P., Vittorio, N. (2017). Reconstruction of α-attractor supergravity models of inflation. PHYSICAL REVIEW D, 95(2) [10.1103/PhysRevD.95.023516].
Reconstruction of α-attractor supergravity models of inflation
VITTORIO, NICOLA
2017-01-01
Abstract
In this paper, we apply reconstruction techniques to recover the potential parameters for a particular class of single-field models, the $\alpha$-attractor (supergravity) models of inflation. This also allows to derive the inflaton vacuum expectation value at horizon crossing. We show how to use this value as one of the input variables to constrain the postaccelerated inflationary phase. We assume that the tensor-to-scalar ratio $r$ is of the order of $10^-3$ , a level reachable by the expected sensitivity of the next-generation CMB experiments.File | Dimensione | Formato | |
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