Fracton critical point and Topological phase transition beyond renormalization (Oct. 21, 2021)

  • Published: 2021-10-18

Time:  15:00  (UTC/GMT+8:00, Beijing/Shanghai), Oct. 21 (Thur.) , 2021

Zoom URL: 

Meeting ID: 949 559 7503

Password: 2021


Speaker: Yizhi You (Princeton)



The theory of quantumphasetransitions separating different phases with distinct symmetry patterns at zero temperature is one of the foundations of modern quantum many-body physics. In this talk, I will demonstrate that the existence of a 2Dtopologicalphase transitionbetween a higher-ordertopologicalinsulator (HOTI) and a trivial Mott insulator with the same symmetry eludes this paradigm. A significant new element of ourphasetransitiontheory is that the infrared (IR) effective theory is controlled by short wave-length fluctuations so thecriticalphenomenon isbeyondtherenormalization perspective.


Invited by Prof. Xi-Nan Zhou