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arXiv · hep-ph/0404128

Electroweak-scale inflation, inflaton-Higgs mixing and the scalar spectral index

Bartjan van Tent·Jan Smit·Anders Tranberg
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Abstract

We construct a phenomenological model of electroweak-scale inflation that is in accordance with recent cosmic microwave background observations by WMAP, while setting the stage for a zero-temperature electroweak transition as assumed in recent models of baryogenesis. We find that the scalar spectral index especially poses tight constraints for low-scale inflation models. The inflaton-Higgs coupling leads to substantial mixing of the scalar degrees of freedom. Two types of scalar particles emerge with decay widths similar to that of the Standard Model Higgs particle.

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Bartjan van Tent, Jan Smit, Anders Tranberg. 2004-07-13. Electroweak-scale inflation, inflaton-Higgs mixing and the scalar spectral index. https://doi.org/10.1088/1475-7516%2F2004%2F07%2F003

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