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The Flow equations of the renormalization group

Presented by: 
Christoph Kopper École Polytechnique
Date: 
Thursday 6th September 2018 - 16:00 to 17:00
Venue: 
INI Seminar Room 1
Abstract: 
The Flow equations in Polchinski's setting allow for a simple and transparent proof of perturbative renormalizability, cirumventing auxiliary combinatoric structures. They also permit to prove properties of perturbative Schwinger functions which are out of reach in other settings. The main problem for a nonperturbative analysis of those equations lies in their combinatoric instability, which is present already at the mean field level.
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University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons