(Super)universal attractors and the de Sitter vacua in string landscape

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Güleryüz Ö.

Journal of Cosmology and Astroparticle Physics, vol.2023, no.5, 2023 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 2023 Issue: 5
  • Publication Date: 2023
  • Doi Number: 10.1088/1475-7516/2023/05/039
  • Journal Name: Journal of Cosmology and Astroparticle Physics
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, INSPEC, zbMATH
  • Keywords: inflation, string theory and cosmology, supersymmetry and cosmology
  • Istanbul Technical University Affiliated: Yes


In this work, we present an effective field theory for string inflation with spontaneously broken supersymmetry without generating any supersymmetric anti-de Sitter vacua. In that regard, we analyze the nilpotent superfields that effectively capture the physics of anti-D3 branes, and obtain the underlying pattern of universal attractors with a single parameter. Accordingly, we reveal a novel uplifting method by adding the same parameter as a complex contribution parallel to the decomposition of a superfield. Following that, we obtain an almost vanishing cosmological constant in a region where the inflationary attractors unify. Finally, we show that the introduction of nilpotent superfields drastically extends the string landscape for the de Sitter (swampland) conjecture, and the (super)universal attractors are in the string landscape in that respect.