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SUMMARY:Meng Cheng (Yale)
DTSTART:20251028T183000Z
DTEND:20251028T193000Z
DTSTAMP:20260423T024650Z
UID:nhetc/118
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/nhetc/118/">
 Ordering topological orders in quantum Hall systems and beyond</a>\nby Men
 g Cheng (Yale) as part of NHETC Seminar\n\n\nAbstract\nI will discuss poss
 ible topological order/topological quantum field theory of quantum Hall sy
 stems. Given the value of the Hall conductivity\, we constrain the global 
 symmetry of the low-energy theory and its anomaly. This information is pow
 erful enough to lead to a unique minimal topological order (or a small num
 ber of minimal topological orders)\, and generally provides an organizing 
 principle for possible topological phases in these systems. Almost all of 
 the known experimentally discovered topological orders are these minimal t
 heories. I will also discuss applications of these ideas in lattice system
 s of fermions with a given filling factor.\n
LOCATION:https://researchseminars.org/talk/nhetc/118/
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