Large Lepton Number of the Universe and The Fate of Topological Defects
Borut Bajc, Antonio Riotto, Goran Senjanovic'
hep-pharXiv:hep-ph/9710415
Abstract
We show that the monopole problem in Grand Unified Theories as well as the domain wall problem may be easily solved if the lepton number asymmetry in the Universe is large enough.
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