Fayet–Iliopoulos terms in supergravity and D-term inflation

Antoniadis, I.; Chatrabhuti, A.; Isono, H.; Knoops, R. (2018). Fayet–Iliopoulos terms in supergravity and D-term inflation. European physical journal. C - particles and fields, 78(5) EDP Sciences 10.1140/epjc/s10052-018-5861-6

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We analyse the consequences of a new gauge invariant Fayet–Iliopoulos (FI) term proposed recently to a class of inflation models driven by supersymmetry breaking with the inflaton being the superpartner of the goldstino. We first show that charged matter fields can be consistently added with the new term, as well as the standard FI term in supergravity in a Kähler frame where the U(1) is not an R-symmetry. We then show that the slow-roll conditions can be easily satisfied with inflation driven by a D-term depending on the two FI parameters. Inflation starts at initial conditions around the maximum of the potential where the U(1) symmetry is restored and stops when the inflaton rolls down to the minimum describing the present phase of our Universe. The resulting tensor-to-scalar ratio of primordial perturbations can be even at observable values in the presence of higher order terms in the Kähler potential.

Item Type:

Journal Article (Original Article)

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:

1434-6044

Publisher:

EDP Sciences

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

30 Aug 2018 15:53

Last Modified:

23 Oct 2019 20:00

Publisher DOI:

10.1140/epjc/s10052-018-5861-6

ArXiv ID:

1803.03817

BORIS DOI:

10.7892/boris.119652

URI:

https://boris.unibe.ch/id/eprint/119652

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