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High Energy Physics - Theory
Title: Quantum Field Theory in Large N Wonderland: Three Lectures
(Submitted on 29 Sep 2023 (v1), last revised 11 Jan 2024 (this version, v3))
Abstract: In these lecture notes, I review how to use large N techniques to solve quantum field theories in various dimensions. In particular, the case of N-dimensional quantum mechanics, non-relativistic cold and dense neutron matter, and scalar field theory in four dimensions are covered. A recurring theme is that large N solutions are fully non-perturbative, and can be used to reliably access quantum field theory for parameter regions where weak-coupling expansions simply fail.
Submission history
From: Paul Romatschke [view email][v1] Fri, 29 Sep 2023 18:00:02 GMT (125kb,D)
[v2] Wed, 18 Oct 2023 14:28:01 GMT (129kb,D)
[v3] Thu, 11 Jan 2024 14:58:27 GMT (129kb,D)
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