Reheating with a Composite Higgs

Abstract

The flatness of the inflaton potential and lightness of the Higgs could have the common origin of the breaking of a global symmetry. This scenario provides a unified framework of Goldstone Inflation and Composite Higgs, where the inflaton and the Higgs both have a pseudo--Goldstone boson nature. The inflaton reheats the Universe via decays to the Higgs and subsequent secondary production of other SM particles via the top and massive vector bosons. We find that inflationary predictions and perturbative reheating conditions are consistent with CMB data for sub--Planckian values of the fields, as well as opening up the possibility of inflation at the TeV scale. We explore this exciting possibility, leading to an interplay between collider data and cosmological constraints.

33 pages, 5 figures. Published version

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• Gravitational wave production from preheating: parameter dependence
• Parametric Resonance in the Early Universe - A Fitting Analysis
• Super-Heavy Dark Matter - Towards Predictive Scenarios from Inflation
• GUT Physics in the era of the LHC
• Probing CP-violating Higgs and gauge boson couplings in the Standard Model effective field theory
• Gravitational wave production from preheating with trilinear interactions
• Composite Hybrid Inflation: Dilaton and Waterfall Pions
• Prospects for Detecting light bosons at the FCC-ee and CEPC
• Potential Surge Preheating: enhanced resonance from potential features
• One-loop corrections to ALP couplings
• One-loop corrections to ALP couplings
• Model Building with Non-Compact Cosets