Higgs xi-inflation for the 125--126 GeV Higgs
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If you have a question about this talk, please contact Damien George.
A non-minimal coupling xi of the Higgs field to gravity can give rise to inflation within the Standard Model, but a simple tree-level analysis indicates that a large value of xi is required. This may cause a
problem for the model due to a breakdown of perturbative unitarity below the inflationary scale. In this talk I will investigate how a Higgs mass in the 125—126 GeV range can significantly reduce the value
of xi required for inflation through the running of the Higgs self-coupling to small values near the Planck scale. A new region of inflation with distinct predictions, including an observable level of the
tensor-to-scalar ratio, is also discussed.
This talk is part of the HEP phenomenology joint Cavendish-DAMTP seminar series.
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Kyle Allison (Oxford)
Friday 29 November 2013, 16:00-17:00