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Author Alvarez-Gaume, Luis ♦ Jimenez, Raul ♦ Gomez, Cesar
Source CERN Document Server
Content type Text
File Format PDF
Date Created 2011-10-19
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Modern physics ♦ Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Astrophysics and Astronomy
Abstract We discuss the phenomenology of the minimal inflation scenario. We concentrate on two aspects: inflationary trajectories and particle production. Our findings can be summarized in two main results: first, that inflationary trayectories that are very flat and provide enough number of e-foldings are very natural in the scenario without fine tunning. We present a general formalism to identify attractors in multi-field inflation regardless of trajectories fulfilling the slow-roll conditions. We then explore particle production in the model and show how the inflaton naturally transmutes into the current dark matter particle, thus providing a mechanism to identify the inflaton today: it is the dark matter. One interesting feature of our model is that it provides a novel mechanism to generate particles and entropy in the universe: the filling of the Fermi sphere up to a given momentum pF due to the sea of goldstinos that are an important part of the matter generated after inflation. With this mechanism in hand we predict that the gravitino should have a mass of > 100-1000 TeV.
Description Presented at: JCAP 03 (2012) 017
Learning Resource Type Article
Publisher Date 2011-01-01
Rights License License