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You are here: Home / Seminars / Theoretical Physics / Berry-Chern monopoles and Spectral flows (or why are topological boundary states everywhere?)

Berry-Chern monopoles and Spectral flows (or why are topological boundary states everywhere?)

Pierre Delplace (Laboratoire de Physique, ENS de Lyon)
When Oct 14, 2021
from 02:00 to 03:00
Where Amphithèâtre Schrödinger
Attendees Pierre Delplace
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Jeudi 14 Octobre

 

Title: Berry-Chern monopoles and Spectral flows (or why are topological boundary states everywhere?)

Pierre Delplace (Laboratoire de Physique, ENS de Lyon)

 

Abstract: 

 
 I would like to discuss a cornerstone concept of wave topology that pops up from condensed mater physics to classical waves (e.g. in optics or fluids), and which is the deep connection between a topological property of the waves (Berry-Chern monopoles) in an homogeneous system and the existence of unidirectional modes (spectral flow) in an inhomogeneous one. I will introduce a simple pedagogical model to illustrate this correspondence. The presentation will be done on the blackboard.