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Status |
Confirmed |
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Seminar Series |
IPHT-HEP |
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Subjects |
hep-ph |
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Date |
Tuesday 11 December 2018 |
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Time |
16:00 |
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Institute |
IPHT |
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Seminar Room |
Salle Claude Itzykson, Bât. 774 |
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Speaker's Last Name |
David Stefanyszyn |
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Speaker's First Name |
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Speaker's Email Address |
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Speaker's Institution |
VSI, University of Groningen |
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Title |
Effective field theories with non-linearly realised symmetries: from flat space scattering amplitudes to cosmology |
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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. |
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