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

Mathematical and Theoretical Physics Seminar: Jinwei Chu (U Chicago), "A new approach to small black holes in string theory"

Event Type: Seminar/Symposium
Sponsor: Department of Physics
Location: Loomis 464
Date: Oct 23, 2025 1:00 - 2:00 pm
Speaker: Jinwei Chu
Contact: Thierry Ramais
E-Mail: ramais@illinois.edu
Phone: 217-300-2044
Originating Calendar: Physics - Mathematical and Theoretical Physics Seminar; Abstract: In this talk, I will introduce a new approach for studying $d+1$ dimensional Euclidean Schwarzschild black holes with Hawking temperature near the Hagedorn temperature, as well as the Horowitz-Polchinski (HP) solutions. The worldsheet theory that describes some of these backgrounds is strongly coupled. We use its underlying affine $SU(2)_L\times SU(2)_R$ symmetry to continue to weak coupling, by varying the level of the current algebra from the small value relevant for black holes and HP solutions to a large value. In this limit, the dynamics can be captured by a solvable effective field theory, closely related to previous work on the non-abelian Thirring model. I will also discuss several interesting properties of the resulting solutions.

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