Colloquium: A new classification of topological defects
讲座人：Randall Kamien, Vicki and William Abrams Professor in the Natural Science, University of Pennsylvania
时 间：16:00-17:00, Mar. 28, Thursday
地 点：Room 302, Library
Nearly 50 years ago, homotopy theory was employed to unify our understanding of topological defects in superfluids, superconductors, crystals, and liquid crystals. It was understood, however, that when there is broken translation invariance (as in crystals and some liquid crystals) that this approac...