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arXiv · 1706.05007

On the robustness of the primordial power spectrum in renormalized Higgs inflation

Fedor Bezrukov·Martin Pauly·Javier Rubio
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Abstract

We study the cosmological consequences of higher-dimensional operators respecting the asymptotic symmetries of the tree-level Higgs inflation action. The main contribution of these operators to the renormalization group enhanced potential is localized in a compact field range, whose upper limit is close to the end of inflation. The spectrum of primordial fluctuations in the so-called universal regime turns out to be almost insensitive to radiative corrections and in excellent agreement with the present cosmological data. However, higher-dimensional operators can play an important role in critical Higgs inflation scenarios containing a quasi-inflection point along the inflationary trajectory. The interplay of radiative corrections with this quasi-inflection point may translate into a sizable modification of the inflationary observables.

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Fedor Bezrukov, Martin Pauly, Javier Rubio. 2017-06-15. On the robustness of the primordial power spectrum in renormalized Higgs inflation. https://doi.org/10.1088/1475-7516%2F2018%2F02%2F040

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