No-Go theorems for ekpyrosis from ten-dimensional supergravity - INSPIRE

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No-Go theorems for ekpyrosis from ten-dimensional supergravity

K. Uzawa
(
- Kwansei Gakuin U.
)

2022

6 pages

Contribution to:

- MG15
, 1049-1054

Published: 2022

DOI:

10.1142/9789811258251_0146

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Abstract: (World Scientific)

In this work, we discuss 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 analysing 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).

Ekpyrosis
Type II string theory
Flux compactifications
Moduli
compactification: flux
dimension: 10
string model: Type II
inflation: model
potential: scalar
supergravity

References(26)

Figures(0)

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Eline

A. Meeus

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