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Elsevier, Physics Letters B, (734), p. 249-254, 2014

DOI: 10.1016/j.physletb.2014.05.074

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Higgs inflation at the critical point

Journal article published in 2014 by Fedor Bezrukov ORCID, Mikhail Shaposhnikov
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Higgs inflation can occur if the Standard Model (SM) is a self-consistent effective field theory up to inflationary scale. This leads to a lower bound on the Higgs boson mass, $M_h ≥ M_{\text{crit}}$. If $M_h$ is more than a few hundreds of MeV above the critical value, the Higgs inflation predicts the universal values of inflationary indexes, $r≃ 0.003$ and $n_s≃ 0.97$, independently on the Standard Model parameters. We show that in the vicinity of the critical point $M_{\text{crit}}$ the inflationary indexes acquire an essential dependence on the mass of the top quark $m_t$ and $M_h$. In particular, the amplitude of the gravitational waves can exceed considerably the universal value.