N-Relaxion

Fonseca, Nayara; Matheus, Ricardo D.; de Lima, Leonardo; Machado, Camila S.

Preprint/Internal Report

PUBDB-2016-01057

N-Relaxion

Fonseca, N. (Corresponding author)DESY* ; de Lima, L. (Corresponding author)DESY* ; Machado, C. S. (Corresponding author) ; Matheus, R. D. (Corresponding author)

2016

This record in other databases:

Report No.: CERN-TH-2016-016; DESY-16-011; arXiv:1601.07183

Abstract: Relaxion models are an interesting new avenue to explain the radiative stability of the Standard Model scalar sector. They require very large field excursions, which are difficult to generate in a consistent UV completion and to reconcile with the compact field space of the relaxion. We propose an N-site model which naturally generates the large decay constant needed to address these issues. Our model offers distinct advantages with respect to previous proposals: the construction involves non-abelian fields, allowing for controlled high energy behaviour and more model building possibilities, both in particle physics and inflationary models, and also admits a continuum limit when the number of sites is large, which may be interpreted as a warped extra dimension.

Keyword(s): inflation: model ; space-time: warped ; high energy behavior ; higher-dimensional ; continuum limit ; decay constant ; nonabelian ; buildings ; stability ; site