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Instanton Effects in Quantum Gravity

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If you have a question about this talk, please contact Ciaran Hughes.

Quantum gravity is hard. So when we figure out how to compute something in it, we celebrate. This is such an occasion. In this talk, I’ll describe a very concrete instanton-induced instability (computed with David Tong) to the dynamics of d=4, N=1 supergravity compactified on a circle. I will take time to explain how it arises by analogy with gauge theories, and give a general overview of the strategies required to tackle such a problem, in order to highlight points of conceptual interest like the non-cancellation of supersymmetric determinants, and the existence of a potential hidden IR scale in quantum gravity.

This talk is part of the HEP/GR Informal Seminar Series for Graduate Students series.

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