Condensed Matter Seminar: "Confinement transitions of Ising gauge theories"
Thursday, April 6, 2017
11:30 am - 12:30 pm
Subir Sachdev (Harvard University)
Wegner showed that the Ising lattice gauge theory in 2+1 dimensions has a confinement transition between confining and deconfined states. He also argued that this transition is in the universality class of the 3-dimensional Ising ferromagnet. I will begin with a review and update of these results, using the modern perspective of topological order and deconfined criticality. The confinement transition can be defined precisely also in the presence of matter fields, and I will discuss the relevance of such models to the physics of the hole-doped cuprates near optimal doping.