2013/07/31 by Diederik Roest, Marco Scalisi, Ivonne Zavala · 3 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmological model #Cosmology and Gravitation Theories #Eternal inflation #Higher-dimensional supergravity #Inflation (cosmology) #Noncommutative and Quantum Gravity Theories #Planck #String (physics) #String theory #Supergravity #astro-ph.CO #gr-qc #hep-th
paper · pdf · doi:10.1088/1475-7516/2013/11/007
published as JCAP11(2013)007 · 18 pages; v3: minor corrections. Version to appear in JCAP
arxiv created 2013/10/31 · openalex publication_date 2013/11/05 · arxiv updated 2013/11/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We assess which Kähler potentials in supergravity lead to viable single-field inflationary models that are consistent with Planck. We highlight the role of symmetries, such as shift, Heisenberg and supersymmetry, in these constructions. Also the connections to string theory are pointed out. Finally, we discuss a supergravity model for arbitrary inflationary potentials that is suitable for open string inflation and generalise it to the case of closed string inflation. Our model includes the recently discussed supergravity reformulation of the Starobinsky model of inflation as well as an interesting alternative with comparable predictions.