Multi-field cold and warm inflation and the de Sitter swampland conjectures
Abstract
We discuss under which conditions multi-field cold and warm inflationary models with canonical kinetic energy terms are compatible with the swampland conjectures about the emergence of de Sitter solutions in string theory. We find that under quite general conditions the slow-roll conditions for multi-field cold inflation are at odds with the swampland conjectures for an arbitrary number of scalar fields driving inflation. However, slow-roll conditions can be reconciled with the swampland conjectures in the strong dissipative regime of warm inflation.
- Publication:
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Journal of Cosmology and Astroparticle Physics
- Pub Date:
- September 2022
- DOI:
- 10.1088/1475-7516/2022/09/001
- arXiv:
- arXiv:2204.13794
- Bibcode:
- 2022JCAP...09..001B
- Keywords:
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- inflation;
- string theory and cosmology;
- General Relativity and Quantum Cosmology;
- High Energy Physics - Theory
- E-Print:
- 15 pages, extended discussion and references included