Inflection-Point Sgoldstino Inflation in no-Scale Supergravity

Autor:	Pallis, C.
Rok vydání:	2023
Předmět:	High Energy Physics - Phenomenology Astrophysics - Cosmology and Nongalactic Astrophysics High Energy Physics - Theory
Druh dokumentu:	Working Paper
DOI:	10.1016/j.physletb.2023.138018
Popis:	We propose a modification of no-scale supergravity models which incorporates sgoldstino stabilization and supersymmetry (SUSY) breaking with a tunable cosmological constant by introducing a Kahler potential which yields a kinetic pole of order one. The resulting scalar potential may develop an inflection point, close to which an inflationary period can be realized for subplanckian field values consistently with the observational data. For central value of the spectral index ns, the necessary tuning is of the order of 10^-6, the tensor-to-scalar ratio is tiny whereas the running of ns is around -3x10^-3. Our proposal is compatible with high-scale SUSY and the results of LHC on the Higgs boson mass. Comment: Published Version
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2302.12214 Zobrazit plný text záznamu View this record from Arxiv