English

Vacuum decay constraints on the Higgs curvature coupling from inflation

Cosmology and Nongalactic Astrophysics 2021-03-24 v3 General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Theory

Abstract

We derive lower bounds for the Higgs-curvature coupling from vacuum stability during inflation in three inflationary models: quadratic and quartic chaotic inflation, and Starobinsky-like power-law inflation. In contrast to most previous studies we take the time-dependence of the Hubble rate into account both in the geometry of our past light-cone and in the Higgs effective potential, which is approximated with three-loop renormalisation group improvement supplemented with one-loop curvature corrections. We find that in all three models, the lower bound is ξ0.0510.066\xi\gtrsim 0.051\ldots 0.066 depending on the top quark mass. We also demonstrate that vacuum decay is most likely to happen a few ee-foldings before the end of inflation.

Keywords

Cite

@article{arxiv.2011.03763,
  title  = {Vacuum decay constraints on the Higgs curvature coupling from inflation},
  author = {Andreas Mantziris and Tommi Markkanen and Arttu Rajantie},
  journal= {arXiv preprint arXiv:2011.03763},
  year   = {2021}
}

Comments

22 pages, 5 figures, v3: Accepted for publication on JCAP, minor typos fixed