Generalized dilaton–axion models of inflation, de Sitter vacua and spontaneous SUSY breaking in supergravity

Yermek Aldabergenov, Auttakit Chatrabhuti, Sergei V. Ketov

Research output: Contribution to journalArticle


We propose the unified models of cosmological inflation, spontaneous SUSY breaking, and the dark energy (de Sitter vacuum) in N= 1 supergravity with the dilaton–axion chiral superfield T in the presence of an N= 1 vector multiplet with the alternative Fayet–Iliopoulos term. By using the Kähler potential as K= - αlog (T+ T¯) and the superpotential as a sum of a constant and a linear term, we find that viable inflation is possible for 3 ≤ α≤ αmax where αmax≈ 7.235. Observations of the amplitude of primordial scalar perturbations fix the SUSY breaking scale in our models as high as 1013GeV. In the case of α> 3 the axion gets the tree-level (non-tachyonic) mass comparable to the inflaton mass.

Original languageEnglish
Article number713
JournalEuropean Physical Journal C
Issue number8
Publication statusPublished - 1 Aug 2019


ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

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