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Resurgent Extrapolation and QFT: Mining Perturbation Theory for Non-perturbative Information

Gerald Dunne, University of Connecticut
Tuesday, February 13, 2024 - 3:00pm
PAT C-421

Resurgence implies that a wealth of non-perturbative information is generically encoded in perturbative data. It also motivates improved approaches to the problem of decoding this information. I describe some recent developments in the search for optimal methods of extrapolation and analytic continuation, based on ideas from the theory of resurgent asymptotics. I will illustrate some of the ideas with applications to examples in quantum field theory.

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