Topological phase transitions in the golden string-net model
LPTMC, Université Paris-6
Mon, May. 13th 2013, 14:00-15:00
Salle Claude Itzykson, Bât. 774, Orme des Merisiers
I will discuss phase transitions in simple systems where anyonic quasiparticles can be found: Kitaev's toric code and the Levin-Wen string-net model. par After a brief review of these exotic excitations in the simplest case of Abelian anyons, I will show that a wide variety of unconventional quantum phase transitions can be found in the presence of a perturbation for the non Abelian case and that the often mentioned robustness of these topological phases is an issue that must be carefully addressed.