publication . Preprint . 2010

No Large Scale Curvature Perturbations during Waterfall of Hybrid Inflation

Abolhasani, Ali Akbar; Firouzjahi, Hassan;
Open Access English
  • Published: 17 May 2010
Abstract
In this paper the possibility of generating large scale curvature perturbations induced from the entropic perturbations during the waterfall phase transition of standard hybrid inflation model is studied. We show that whether or not appreciable amounts of large scale curvature perturbations are produced during the waterfall phase transition depend crucially on the competition between the classical and the quantum mechanical back-reactions to terminate inflation. If one considers only the classical evolution of the system we show that the highly blue-tilted entropy perturbations induce highly blue-tilted large scale curvature perturbations during the waterfall ph...
Subjects
free text keywords: High Energy Physics - Theory, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Phenomenology
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