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Lectures 1 and 2: Index Theory, Quantum Field Theory and Supersymmetry
These two lectures will present a review of index theory as it appears in the mathematics literature and the original proofs, and then proceed to some aspects of QFT that involve symmetry realization and symmetry breaking, and extend these considerations to supersymmetry. We will then present a general study of Witten's index in QFT, and how it leads to a proof of the Atiyah-Singer index theorem using loop space localization.
Level 7 conference room, 10am-12pm - Wednesday 14th November, and Thursday 15th November 2018
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Lecture 3: Revisiting Goldstone's theorem
The last few years have seen an explosion of non-perturbative techniques in QFT. Mostly due to the upgraded conformal bootstrap, localization techniques, resurgence etcetera. We have also learned that in theories with global symmetries, we can access non-perturbative information in those sectors of the Hilbert space describing states with high values of the global charge. What is surprising is that the results involve novel ways of understanding Goldstone's theorem and breaking of Lorentz invariance. I will present some of recent work on this subject.
Level 7 conference room, 10am-12pm - Friday 16th November 2018
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