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Title: Matter inflation with A{sub 4} flavour symmetry breaking

We discuss model building in tribrid inflation, which is a framework for realising inflation in the matter sector of supersymmetric particle physics models. The inflaton is a D-flat combination of matter fields, and inflation ends by a phase transition in which some Higgs field obtains a vacuum expectation value. We first describe the general procedure for implementing tribrid inflation in realistic models of particle physics that can be applied to a wide variety of BSM particle physics models around the GUT scale. We then demonstrate how the procedure works for an explicit lepton flavour model based on an A{sub 4} family symmetry. The model is both predictive and phenomenologically viable, and illustrates how tribrid inflation connects cosmological and particle physics parameters. In particular, it predicts a relation between the neutrino Yukawa coupling and the running of the spectral index α{sub s}. We also show how topological defects from the flavour symmetry breaking can be avoided automatically.
Authors:
 [1] ;  [2]
  1. Department of Physics, University of Basel, Klingelbergstrasse 82, Basel, CH-4056 Switzerland (Switzerland)
  2. Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), Föhringer Ring 6, München, D-80805 Germany (Germany)
Publication Date:
OSTI Identifier:
22282630
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2013; Journal Issue: 10; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; EXPECTATION VALUE; FLAVOR MODEL; GRAND UNIFIED THEORY; HIGGS BOSONS; HIGGS MODEL; INFLATIONARY UNIVERSE; INFLATONS; NEUTRINOS; PHASE TRANSFORMATIONS; SPARTICLES; SYMMETRY BREAKING; YUKAWA POTENTIAL