Antoniadis, Ignatios; Chatrabhuti, Auttakit (18 August 2020). Challenges in supersymmetric cosmology. PoS - proceedings of science, CORFU2019, 081. Trieste, Italy: Scuola Internazionale Superiore di Studi Avanzati SISSA 10.22323/1.376.0081
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We discuss the possibility that inflation is driven by supersymmetry breaking with the superpartner of the goldstino (sgoldstino) playing the role of the inflaton. Imposing an R-symmetry allows to satisfy easily the slow-roll conditions, avoiding the so-called η-problem, and leads to an interesting class of small field inflation models, characterised by an inflationary plateau around the maximum of the scalar potential near the origin, where R-symmetry is restored with the inflaton rolling down to a minimum describing the present phase of the Universe. Inflation can be driven by either an F- or a D-term, while the minimum has a positive tuneable vacuum energy. The models agree with cosmological observations and in the simplest case predict a rather small tensor-to-scalar ratio of primordial perturbations.
Item Type: |
Conference or Workshop Item (Paper) |
|---|---|
Division/Institute: |
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) 08 Faculty of Science > Institute of Theoretical Physics |
UniBE Contributor: |
Antoniadis, Ignatios |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1824-8039 |
Publisher: |
Scuola Internazionale Superiore di Studi Avanzati SISSA |
Language: |
English |
Submitter: |
Esther Fiechter |
Date Deposited: |
16 Nov 2020 14:21 |
Last Modified: |
05 Dec 2022 15:41 |
Publisher DOI: |
10.22323/1.376.0081 |
BORIS DOI: |
10.7892/boris.147890 |
URI: |
https://boris.unibe.ch/id/eprint/147890 |
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