Norbert Schuch 7/4/2010

How symmetries determine the properties of quantum many-body systems
Norbert Schuch, Caltech

In this talk, I will explain how one can understand the properties of quantum many-body states based on a local description with so-called projected entangled pair states (PEPS). In particular, I will highlight the importance of symmetries in this description, by showing how local symmetries of the PEPS determine the global properties of the state. More specifically, all properties characterizing the topological order of these states -- ground state degeneracy, topological entropy, local indistinguishability, and anyonic excitations -- emerge naturally from the symmetry.

Miercoles 7 de marzo, 2010, 16:30-17:30
Sala de Seminarios del Centro de Física
c/ Serrano 121, Madrid