Research Seminars @ Illinois

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Tailored for undergraduate researchers, this calendar is a curated list of research seminars at the University of Illinois. Explore the diverse world of research and expand your knowledge through engaging sessions designed to inspire and enlighten.

To have your events added or removed from this calendar, please contact OUR at ugresearch@illinois.edu

Anthony J Leggett Institute for Condensed Matter Theory Seminar - Yin-Chen He (Stonybrook), "A Fuzzy Sphere Journey: from 3D Ising to Chern-Simons-matter CFT "

Event Type
Seminar/Symposium
Sponsor
Physics - The Anthony J Leggett Institute for Condensed Matter Theory
Location
ESB 190
Date
Oct 13, 2025   12:00 - 1:00 pm  
Speaker
Yin-Chen He
Contact
Thierry Ramais
E-Mail
ramais@illinois.edu
Views
24
Originating Calendar
Physics - The Anthony J Leggett Institute for Condensed Matter Theory Seminar

Abstract: Conformal Field Theory (CFT) represents a class of quantum field theories that have profound applications across various physics domains, from critical phenomena in condensed matter to high energy physics. In this talk, I will introduce our recently proposed 'fuzzy (non-commutative) sphere regularization' scheme, a method that addresses and offers a solution to the longstanding need for a non-perturbative approach to 3D CFTs. I will dive into a number of  examples, including 3D Ising transition and Chern-Simons-matter theories that describes fractional quantum Hall effect transition.  In particular, I will present clear numerical evidence that the confinement transition of Kalmeyer-Laughlin chiral spin liquid, i.e. a single critical scalar coupled to U(1)_2 Chern-Simon term, is continuous and conformal.

 This seminar will take place at noon in room ESB190.

Zoom Link: https://illinois.zoom.us/my/icmt.seminar?pwd=ZU1KbnBLeXZLUmJKc0oyU205cDNDdz09
Meeting ID: 791 382 8328
Password: 106237


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