Scale hierarchies in particle physics and cosmology

Antoniadis, Ignatios (3 August 2018). Scale hierarchies in particle physics and cosmology. EPJ web of conferences, 182(02005), 02005. EDP Sciences 10.1051/epjconf/201818202005

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I describe the phenomenology of a model of supersymmetry breaking in the presence of a tiny (tuneable) positive cosmological constant. It utilises a single chiral multiplet with a gauged shift symmetry, that can be identified with the string dilaton (or an appropriate compactification modulus). The model is coupled to the MSSM, leading to calculable soft supersymmetry breaking masses and a distinct low energy phenomenology that allows to differentiate it from other models of supersymmetry breaking and mediation mechanisms. We also study the question if this model can lead to inflation by identifying the dilaton with the inflaton. We find that this is possible if the Kähler potential is modified by a term that has the form of NS5-brane instantons, leading to an appropriate inflationary plateau around the maximum of the scalar potential, depending on two extra parameters.

Item Type:

Conference or Workshop Item (Paper)

Division/Institute:

08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Antoniadis, Ignatios

Subjects:

500 Science > 530 Physics

ISSN:

2100-014X

Publisher:

EDP Sciences

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

25 Feb 2019 11:06

Last Modified:

27 Oct 2019 06:23

Publisher DOI:

10.1051/epjconf/201818202005

BORIS DOI:

10.7892/boris.123742

URI:

https://boris.unibe.ch/id/eprint/123742

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