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Multi-field cold and warm inflation and the de Sitter swampland conjectures

O. Bertolami, P. M. Sá

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.

inflation; string theory and cosmology; General Relativity and Quantum Cosmology; High Energy Physics - Theory

Journal of Cosmology and Astroparticle Physics
Volume 2022, Issue 9
2022 September

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Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia