Conference - DimaScat : Scattering Theory and Spectral Asymptotics of Differential Operators - in Honour of Dimitri Yafaev

Wednesday, April 20, 2016 - 14:00 to 15:00
Gian Michele Graf
ETH Zürich
Topological insulators and scattering theory
Abstract: 

Topological insulators are materials, which are conducting at their edges, though not in the bulk. Their characteristic physical properties are reflected by an index, associated to the Hamiltonian. By a general principle, known as bulk-edge duality, the index can be defined either in terms of the bulk or the edge Hamiltonian. Among various ways of establishing that duality as a theorem, one is by scattering theory, and in fact by Levinson's theorem.

Partners

Irmar LMJL ENS Rennes LMBA LAREMA

Affiliation

ANR CNRS Rennes 1 Rennes 2 Nantes INSA Rennes INRIA ENSRennes UBO UBS Angers UBL