Abstract
Abstract
We consider the cosmology obtained using scalar fields with a negative potential energy, such as employed to obtain an Ekpyrotic phase of contraction. Applying the covariant entropy bound to the tower of states dictated by the distance conjecture, we find that the relative slope of the potential |V′|/|V| is bounded from below by a constant of the order one in Planck units. This is consistent with the requirement to obtain slow Ekpyrotic contraction. We also derive a refined condition on the potential which holds near local minima of a negative potential.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
Reference64 articles.
1. T.D. Brennan, F. Carta and C. Vafa, The string landscape, the swampland, and the missing corner, PoS TASI2017 (2017) 015 [arXiv:1711.00864] [INSPIRE].
2. E. Palti, The swampland: introduction and review, Fortsch. Phys. 67 (2019) 1900037 [arXiv:1903.06239] [INSPIRE].
3. G. Obied, H. Ooguri, L. Spodyneiko and C. Vafa, De Sitter space and the swampland, arXiv:1806.08362 [INSPIRE].
4. H. Ooguri, E. Palti, G. Shiu and C. Vafa, Distance and de Sitter conjectures on the swampland, Phys. Lett. B 788 (2019) 180 [arXiv:1810.05506] [INSPIRE].
5. S. Laliberte and R. Brandenberger, String gases and the swampland, JCAP 07 (2020) 046 [arXiv:1911.00199] [INSPIRE].
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