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Higgs inflation as a mirage

Date: February 10th @ 15:00 (CET)
Title:  Higgs inflation as a mirage
Presenter: J. Barbón (IFT-UAM)
Abstract:  Models of Higgs inflation are constructed by a naive UV extrapolation of a very particular effective action. This procedure clashes with standard notions of effective field theory. In particular, the extrapolation must be trusted over a large hierarchy of intermediate scales. We introduce a simple toy model as a partial UV completion, in which this intermediate hierarchy is generated by a tuning of relevant operators in the UV theory. We further discuss how this model can be used to quantify  the accuracy of the extrapolation procedure (or rather the lack of it).