PT Journal
AU Lazarides, G
   Reig, M
   Shafi, Q
   Srivastava, R
   Valle, JWF
TI Spontaneous Breaking of Lepton Number and the Cosmological Domain Wall Problem
SO Physical Review Letters
JI Phys. Rev. Lett.
PY 2019
BP 151301
EP 5pp
VL 122
IS 15
DI 10.1103/PhysRevLett.122.151301
LA English
AB We show that if global lepton number symmetry is spontaneously broken in a postinflation 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 that allow spontaneous lepton number breaking to be safe from such domain walls.
ER