We investigate the stability of Higgs potential in inverse seesaw models. We derive the full two-loop RGEs of the relevant parameters, such as the quartic Higgs self-coupling, taking thresholds into account. We find that for relatively large Yukawa couplings the Higgs quartic self-coupling goes negative well below the Standard Model instability scale ∼1010 GeV. We show, however, that the ``dynamical'' inverse seesaw with spontaneous lepton number violation can lead to a completely consistent and stable Higgs vacuum up to the Planck scale.
@article{arxiv.2009.10116,
title = {Electroweak symmetry breaking in the inverse seesaw mechanism},
author = {Sanjoy Mandal and Rahul Srivastava and José W. F. Valle},
journal= {arXiv preprint arXiv:2009.10116},
year = {2021}
}