Vacuum stability and the scaling behaviour of the Higgs-curvature coupling

2015/09/11 by Moss, Ian G.
#FOS: Physical sciences #High Energy Physics - Theory (hep-th)

paper · doi:10.48550/arxiv.1509.03554

Abstract

Stability of the Higgs vacuum during early universe inflation is dependent on how the Higgs couples to the spacetime curvature. Limits on the curvature coupling parameter at the electroweak scale ξ_EW are shown to be consistent only when quantum gravity effects are included and a covariant quantisation procedure, such as Vilkovisky-DeWitt, is adopted. Stability requires ξ_EW>-0.03 for a top quark mass M_t=173.34 \rm GeV.

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