New Kähler invariant Fayet-Iliopoulos terms in supergravity and cosmological applications
arXiv:1912.08117 · doi:10.1140/epjc/s10052-020-7912-z
Abstract
Recently, a new type of constant Fayet-Iliopoulos (FI) terms was introduced in supergravity, which do not require the gauging of the -symmetry. We revisit and generalise these constructions, building a new class of Kähler invariant FI terms parametrised by a function of the gravitino mass as functional of the chiral superfields, which is then used to describe new models of inflation. They are based on a no-scale supergravity model of the inflaton chiral multiplet, supplemented by an abelian vector multiplet with the new FI-term. We show that the inflaton potential is compatible with the CMB observational data, with a vacuum energy at the minimum that can be tuned to a tiny positive value. Finally, the axionic shift symmetry can be gauged by the which becomes massive. These models offer a mechanism for fixing the gravitino mass in no-scale supergravities, that corresponds to a flat direction of the scalar potential in the absence of the new FI-term; its origin in string theory is an interesting open problem.
17 pages, 4 figures. Published version
References in corpus (2)
Cited by in corpus (8)
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- Note on supersymmetric Dirac-Born-Infeld action with Fayet-Iliopoulos term
- Complex Linear Multiplets and Local Supersymmetry Breaking
- -term Multi-Field Inflation in Supergravity without Stabiliser Superfields
- More on massive gravitino scattering amplitudes and the unitarity cutoff of the new Fayet-Iliopoulos terms
- Component Actions of Liberated Supergravity and New Fayet-Iliopoulos Terms in Superconformal Tensor Calculus