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\title{Higgs inflation by Fedor Bezrukov}
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Higgs inflation~\cite{Bezrukov:2007ep} is based on the idea of non-minimaly coupled inflation. It allows for inflation by a small modification of the \cref{Standard Model}, which does not introduce new degrees of freedom, and modifies the physics at low (available in laboratory experiments) energies very weakly.
The only modification of the \cref{Standard Model} \cref{action} consist of introduction of non-minimal coupling of the \cref{Higgs field} to gravity
$$
\frac{\xi}{2} HH^\dagger R\;,
$$
where $R$ is the Ricci scalar and $H$ is the \cref{Higgs field}.
Note, that in principle this term is required by the renormalizability of the theory in curved space-time.
This term is equivalent to effectively flattening the Higgs potential at large field values, allowing for generation of primordial density perturbations with observed amplitude. This requires a rather large $\xi\sim 47000\sqrt{\lambda}$, where $\lambda$ is the Higgs boson self coupling constant.
It predicts definite value for the spectral index $n_s\simeq0.97$ and very weak tensor perturbations, $r \sim 10^{-3}$.
It relies also on absence of other new physics up to the Planck scale.
\begin{thebibliography}{1}
\bibitem{Bezrukov:2007ep}
F.~L.~Bezrukov and M.~Shaposhnikov,
``The Standard Model Higgs boson as the inflaton,''
Phys.\ Lett.\ B {\bf 659} (2008) 703
[arXiv:0710.3755 [hep-th]].
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