Theoretical Physics Seminar - Sergej Moroz

Ising gauge theory coupled to quantum matter: Exotic phase transition and SPT order

Abstract

After an introduction in the field of lattice gauge theories, I will discuss two surprising phenomena emerging from the interplay of dynamical discrete Ising gauge fields and quantum matter. First, I will talk about an exotic two-dimensional phase transition between the deconfined Dirac semimetal and the confined charge density wave. Second, I will explain how the Higgs phase, where matter condenses, exhibits symmetry-protected topological order. In the presence of an edge, this allows to distinguish sharply the confined and Higgs regimes.

The seminar is held in hybrid form

Participate on campus or via Zoom.

On campus: PJ lecture hall
Zoom link: https://gu-se.zoom.us/j/64681043702

Read more about the seminar series

Theoretical Physics Seminar