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Cited by 458

The DOI matches its Crossref record; 14 of the 14 references it cites were found in a registry or an index.

On the Naturalness of Higgs inflation

Open access
Barbón, J. L. F., Espinosa, J. R.·2009·Physical Review D
DOI 10.1103/physrevd.79.081302
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Abstract

We critically examine the recent claim that the standard model (SM) Higgs boson $\mathcal{H}$ could drive inflation in agreement with observations if $|\mathcal{H}{|}^{2}$ has a strong coupling $\ensuremath{\xi}\ensuremath{\sim}{10}^{4}$ to the Ricci curvature scalar. We first show that the effective-theory approach upon which that claim is based ceases to be valid beyond a cutoff scale $\ensuremath{\Lambda}={m}_{p}/\ensuremath{\xi}$, where ${m}_{p}$ is the reduced Planck mass. We then argue that knowing the Higgs potential profile for the field values relevant for inflation ($|\mathcal{H}|>{m}_{p}/\sqrt{\ensuremath{\xi}}\ensuremath{\gg}\ensuremath{\Lambda}$) requires knowledge of the ultraviolet completion of the SM beyond $\ensuremath{\Lambda}$. In absence of such microscopic theory, the extrapolation of the pure SM potential beyond $\ensuremath{\Lambda}$ is unwarranted and the scenario is akin to other ad hoc inflaton potentials afflicted with significant fine-tuning. The appealing naturalness of this minimal proposal is therefore lost.

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Metadata

Authors
Barbón, J. L. F., & Espinosa, J. R.
Venue
Physical Review D
Publisher
American Physical Society (APS)
Published
2009-04-10
Volume
79
Issue
8
ISSN
  • 0556-2821 (ISSN-L)
  • 1550-7998
  • 1550-2368
DOI
10.1103/physrevd.79.081302
OpenAlex
W1987657220
Cited by
458
References
14
FWCI
12.85
Type
journal article
Language
en
Open access
green
Licence
link.aps.org/licenses/aps-default-license (vor)

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