Challenges in supersymmetric cosmology

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:

16 Nov 2020 14:21

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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