Tuesday, October 31st: Touching an elephant blindfolded: duality between unconventional quantum critical points

Event Date: 

Tuesday, October 31, 2017 - 4:00pm

Event Date Details: 

Refreshments served at 3:40pm.

Event Location: 

  • Broida 1640
  • Physics Colloquium

Recently significant progress has been made in (2+1)-dimensional quantum critical points. In particular, it was realized that different Lagrangians may be related by hidden dualities, i.e., seemingly different theories may actually be identical in the infrared limit. Among all the proposed dualities, one group of dualities between unconventional quantum critical points have attracted particular interest in the field of condensed matter theory. This group of dualities include the deconfined quantum-critical point first proposed in UCSB, and the topological transition between a bosonic topological insulator and a trivial Mott insulator. Each of the transitions mentioned above is also "self-dual". This group of dualities make extremely powerful predictions for numerical test. In this colloquium we will review the theoretical aspects and most recent numerical evidences for these dualities.

Cenke Xu, UCSB