English

Swampland, Axions and Minimal Warm Inflation

High Energy Physics - Theory 2020-05-27 v3 Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology

Abstract

Warm inflation has been noted previously as a possible way to implement inflationary models compatible with the dS swampland bounds. But often in these discussions the heat bath dynamics is kept largely unspecified. We point out that the recently introduced Minimal Warm Inflation of arXiv:1910.07525, where an axionic coupling of the inflaton leads to an explicit model for the thermal bath, yields models of inflation that can easily fit cosmological observations while satisfying de Sitter swampland bounds, as well as the swampland distance bound and trans-Planckian censorship.

Keywords

Cite

@article{arxiv.1911.00323,
  title  = {Swampland, Axions and Minimal Warm Inflation},
  author = {Suratna Das and Gaurav Goswami and Chethan Krishnan},
  journal= {arXiv preprint arXiv:1911.00323},
  year   = {2020}
}

Comments

v3: Version accepted in Phys. Rev. D