Direct Higgs-gravity interaction and stability of our universe

The Higgs effective potential becomes unstable at approximately $1{0}^{11}\text{ }\text{ }\mathrm{GeV}$, and if only standard model interactions are considered, the lifetime $\ensuremath{\tau}$ of the electroweak vacuum turns out to be much larger than the age of the Universe ${T}_{U}$. It is well known, however, that $\ensuremath{\tau}$ is extremely sensitive to the presence of unknown new physic…