A Unified Model for Inflation, pseudo-Goldstone Dark Matter, Neutrino Mass and Baryogenesis

Abstract

We present a unified theory of inflation, neutrino mass, baryogenesis and dark matter where global lepton number symmetry and its breaking play a crucial role. The basic idea is to use a lepton number carrying complex scalar field as the inflaton as well as the field that implements Affleck-Dine (AD) leptogenesis. Dark matter is the massive majoron which is a pseudo-Goldstone boson, resulting from the spontaneous breaking of lepton number symmetry supplemented by explicit lepton number violation needed to implement AD leptogenesis. The magnitude of the resulting $n_B/s$ in the model is related to the mass of the pseudo-Goldstone dark matter, connecting two apparently disconnected cosmological observations. Inverse seesaw mechanism with lepton number breaking at low scale is crucial to prevent washout of the lepton asymmetry during the universe's evolution. The model seems to provide an economical solution to several puzzles of the standard model of particle physics and cosmology in one stroke.

14 pages, no figures, references updated

References in corpus (13)

• The Standard Model Higgs boson as the inflaton
• Complex Singlet Extension of the Standard Model
• Affleck-Dine inflation
• Pseudo Nambu-Goldstone Dark Matter: Examples of Vanishing Direct Detection Cross Section
• Direct and indirect probes of Goldstone dark matter
• Affleck-Dine Baryogenesis, Split Supersymmetry, and Inflation
• Pseudo-Nambu-Goldstone Dark Matter Model Inspired by Grand Unification
• Constraints on Pseudo-Nambu-Goldstone dark matter from direct detection experiment and neutron star reheating temperature
• Affleck-Dine Baryogenesis with Observable Neutron-Anti-Neutron Oscillation
• A Minimal Approach to Baryogenesis via Affleck-Dine and Inflaton Mass Terms
• Inflatonic baryogenesis with large tensor mode
• Pseudo-Goldstone Dark Matter in $SO(10)$
• Non-thermal Production of PNGB Dark Matter and Inflation