Abstract
We show how supersymmetric hybrid inflation with scalar spectral index $n_{\rm s}\simeq 0.96 - 0.97$ is realized in the context of quasi-minimal supergravity if we insist that the inflationary potential not exhibit any local minima. We also address the problem of the initial conditions for both monotonic and non-monotonic inflationary potentials.
Highlights
The simplest supersymmetric (SUSY) hybrid inflation model [1] with weak radiative corrections and minimal Kähler potential predicts a scalar spectral index ns, which lies close to 0.98
We address the problem of the initial conditions [11] of such hybrid inflation scenarios by invoking an early inflationary stage [12,13,14] considering inflationary potentials which are either monotonic or nonmonotonic
We investigated the possibility of having a viable scenario of SUSY hybrid inflation with a scalar spectral index ns ≃ 0.96–0.97 and a monotonic inflationary potential
Summary
School of Rural and Surveying Engineering, Faculty of Engineering, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece (Received 14 December 2017; published 15 February 2018) We show how supersymmetric hybrid inflation with scalar spectral index ns ≃ 0.96–0.97 is realized in the context of quasiminimal supergravity if we insist that the inflationary potential not exhibit any local extrema. We also address the problem of the initial conditions for both monotonic and nonmonotonic inflationary potentials.
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