Progress report: Sabine Harribey

Albano 3: 6228 - Mega (22 seats) (Albano Building 3)

Albano 3: 6228 - Mega (22 seats)

Albano Building 3


Title: Defects and Boundaries in the O(N) model

Introducing defects for O(N) critical models has recently sparked much interest. Indeed, from a theoretical point of view defects give rise to new universality classes of 3D CFTs that can often be studied analytically. Defects can also describe physical impurities or finite-size effects that can be realised experimentally. 

In this talk, I will first review line defects and surface defects in the O(N) model. I will then present another approach through interfaces with localised cubic interactions perturbing a quartic multi-scalar model. We computed the one-loop beta functions and then looked for fixed points both analytically and numerically for different bulk symmetries. 

The agenda of this meeting is empty