Conférence - DimaScat : Théorie du scattering et asymptotiques spectrales d'opérateurs différentiels - en l'honneur de Dimitri Yafaev

Mercredi, 20 Avril, 2016 - 14:00 - 15:00
Gian Michele Graf
ETH Zürich
Topological insulators and scattering theory
Résumé: 

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.

Partenaires

Irmar LMJL ENS Rennes LMBA LAREMA

Tutelles

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