Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Status Confirmed
Seminar Series IPHT-HEP
Subjects hep-ph
Date Tuesday 11 December 2018
Time 16:00
Institute IPHT
Seminar Room Salle Claude Itzykson, Bât. 774
Speaker's Last Name David Stefanyszyn
Speaker's First Name
Speaker's Email Address
Speaker's Institution VSI, University of Groningen
Title Effective field theories with non-linearly realised symmetries: from flat space scattering amplitudes to cosmology
Abstract In this talk I will outline work I have done over the past 12 months or so on non-linearly realised symmetries in effective field theories both on Lorentz invariant and Lorentz violating backgrounds. I will first discuss the general formulism of the coset construction and inverse Higgs constraints as a tool to construct non-linear realisations of spontaneously broken symmetries. I will then explain how this provides a useful classification of scalar quantum field theories in flat space followed by discussing how it provides a useful tool for building inflationary models. I will also present a general classification of non-linearly realised symmetries within the effective field theory framework of single clock cosmologies. I will make the talk very pedagogical.
arXiv Preprint Number

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