Abstract
We show how a heavy scalar singlet with a large vacuum expectation value can evade the potential instability of the Standard Model electroweak vacuum. The quartic interaction between the heavy scalar singlet and the Higgs doublet leads to a positive tree-level threshold correction for the Higgs quartic coupling, which is very effective in stabilizing the potential. We provide examples, such as the see-saw, invisible axion and unitarized Higgs inflation, where the proposed mechanism is automatically implemented in well-defined ranges of Higgs masses.
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Elias-Miró, J., Espinosa, J.R., Giudice, G.F. et al. Stabilization of the electroweak vacuum by a scalar threshold effect. J. High Energ. Phys. 2012, 31 (2012). https://doi.org/10.1007/JHEP06(2012)031
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DOI: https://doi.org/10.1007/JHEP06(2012)031