Spontaneous Breaking of Lepton Number and Cosmological Domain Wall Problem
High Energy Physics - Phenomenology
2019-04-17 v2 Cosmology and Nongalactic Astrophysics
Abstract
We show that if global lepton number symmetry is spontaneously broken in a post inflation epoch, then it can lead to the formation of cosmological domain walls. This happens in the well-known "Majoron paradigm" for neutrino mass generation. We propose some realistic examples which allow spontaneous lepton number breaking to be safe from such domain walls.
Keywords
Cite
@article{arxiv.1806.11198,
title = {Spontaneous Breaking of Lepton Number and Cosmological Domain Wall Problem},
author = {George Lazarides and Mario Reig and Qaisar Shafi and Rahul Srivastava and José W. F. Valle},
journal= {arXiv preprint arXiv:1806.11198},
year = {2019}
}
Comments
8 pages, References added, Discussion on Domain Wall Problem Expanded, Conclusions Unchanged, Version Published in Phys. Rev. Lett