Between topological strings and topological phases

April 14, 2017

Jeffrey Teo, Department of Physics, University of Virginia

Topological phases in two and three dimensions can be theoretically constructed by coupled-wire models whose fundamental constituents are electronic channels along strings.  On the other hand, the collective topological phases support further fractionalized emergent quasi-string excitations or defects such as flux vortices.  In this talk I will describe topological superconductors and Dirac (or Weyl) semimetals using coupled-wire models and discuss the fractional behavior of emergent topological strings.