The Institute of Nuclear and Particle Physics (INPP) presents Gerald V. Dunne, of University of Connecticut, presenting “Resurgence and non-perturbative physics: Decoding the path Integral,” on Tuesday, March. 22, at at 4 p.m. in Edwards Accelerator Lab, Roger W. Finlay Conference Room.
Gerald V. Dunne
Abstract: Resurgence is a novel formalism, the goal of which is to unify perturbation theory and non-perturbative physics. I will give a basic introduction to this new idea, and focus on some recent surprising results about path integrals and quantum spectral problems. For example, in certain paradigmatic quantum problems such as the double-well and periodic potentials, which are the basis of much of our physical intuition about instantons, all information about all non-perturbative orders is subtly encoded in perturbation theory. Important physical motivation comes from understanding the “sign problem” for finite density quantum systems such as finite density QCD, and real time dynamics in quantum systems.
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