High Energy Theory Seminar
Higher Symmetry, Topological Quantum Field Theory, and Gapped Phases of Matter
I define and study TQFTs which generalize the Dijkgraaf-Witten TQFT and can be described on a lattice using discrete 1-form and 2-form gauge fields. The gauge group is replaced by a gauge 2-group. It is proposed that 2-group TQFTs classify gapped phases of gauge theories as well as Symmetry Protected Topological phases of matter. They can also be used to define discrete theta-parameters on the lattice.
Date & Time
December 02, 2013 | 2:30pm – 4:00pm
Location
Bloomberg Lecture HallSpeakers
Affiliation
California Institute of Technology