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Home > No-Go theorems for ekpyrosis from ten-dimensional supergravity
 
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Title No-Go theorems for ekpyrosis from ten-dimensional supergravity
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Author(s) Uzawa, Kunihito (speaker) (Kwansei Gakuin University)
Corporate author(s) CERN. Geneva
Imprint 2019-06-25. - 0:12:37.
Series (Conferences & Workshops)
(String Phenomenology 2019)
Lecture note on 2019-06-25T14:30:00
Subject category Conferences & Workshops
Abstract In this talk, we present whether the new ekpyrotic scenario can be embedded into ten-dimensional supergravity. We use that the scalar potential obtained from flux compactifications of type II supergravity with sources has a universal scaling with respect to the dilaton and the volume mode. Similar to the investigation of inflationary models, we find very strong constraints ruling out ekpyrosis from analyzing the fast-roll conditions. We conclude that flux compactifications tend to provide potentials that are neither too flat and positive (inflation) nor too steep and negative (ekpyrosis).
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Submitted by elena.gianolio@cern.ch

 


 Record created 2019-06-28, last modified 2022-11-02
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