Seminar series
Date
Tue, 28 Jan 2025
13:00
13:00
Location
L5
Speaker
Christian Copetti
Organisation
Oxford
"The question of whether an impurity can be screened by bulk degrees of freedom is central to the study of defects and to (variations of) the Kondo problem. In this talk I discuss how symmetry, generalized or not, can give serious constraints on the possible scenarios at long distances. These can be quantified in the UV where the defect is weakly coupled. I will give some examples of interesting symmetric defect RG flows in (1+1) and (2+1)d.
Based on https://arxiv.org/pdf/2412.18652 and work in progress."