Geometry and Quantum Theory (GQT seminar) Spring 2025.
Time: 4:15-6:15 pm, Tuesdays, at Science Center (1 Oxford St), 507.
Organized by Dan Freed,
Vasily Krylov.
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Schedule:
1/27: Keyou Zeng, review of the excision property in factorization
homology (as well as the organizational session).
2/4: Sunghyuk Park, blob homology.
2/11: Ben Gammage, discussion of the paper Integrating quantum groups over surfaces.
2/18: Dan Freed, Algebras of "symmetries" in QFT and applications to solitons.
2/25: Dan Freed continues.
3/4: no meeting.
3/11: Yu Leon Liu, Introduction to the probabilistic approach to Louville theory.
3/25: Sunghyuk Park, Introduction to the probabilistic approach to Louville theory II.
4/1: Bowen Yang, Introduction to the probabilistic approach to Louville theory III.
4/8: no meeting.
4/15: Anadil Saeed Rao, Instantons on Taub-NUT space and Bow Construction.
4/22: Bryan Wang Peng Jun and Bowen Yang, Classifying Space for Phases of Matrix Product States.
4/29: Anadil Saeed Rao and Vasily Krylov, Algebraic approach to the bow construction.
Resources:
Dan Freed's talks on algebras of "symmetries" in QFT:
Main papers:
Clay Cordova, Nicholas Holfester, Kantaro Ohmori, Representation Theory of Solitons
Clay Cordova, Diego Garcia-Sepulveda, Nicholas Holfester, Particle-Soliton Degeneracies from Spontaneously Broken Non-Invertible Symmetry
Clay Cordova, Diego Garcia-Sepulveda, Nicholas Holfester, Particle-Soliton Degeneracy in 2D Quantum Chromodynamics.
Ying-Hsuan Lin, Masaki Okada, Sahand Seifnashri, Yuji Tachikawa, Asymptotic density of states in 2d CFTs with non-invertible symmetries.
Background papers:
Daniel S. Freed, Gregory W. Moore, Constantin Teleman, Topological symmetry in quantum field theory
Daniel S. Freed, Introduction to topological symmetry in QFT.
Geometry and Quantum Theory (GQT seminar) Fall 2024.
Time: 4:15-6:15 pm, Tuesdays, at Science Center (1 Oxford St), Hall E.
Organized by Dan Freed,
Vasily Krylov.
We will begin by having introductory talks by Dan Freed's postdocs from Harvard/CMSA. We will choose a
topic to discuss in the second half of the semester.
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Schedule:
9/10: Ahsan Z Khan.
9/17: Keyou Zeng.
9/24: Vasily Krylov.
10/1: Bowen Yang.
10/8: Sunghyuk Park.
10/15: Mayuko Yamashita.
10/22: Thibault Decoppet.
10/29: Ben Gammage.
11/5: Dan Freed will give a talk "Introduction to Factorization algebras".
11/12: no meeting.
11/19: Mayuko Yamashita will talk about Factorization algebras in TQFT, Time: 6-7 pm at Science Center (1 Oxford St), Room 507.
11/20: Ahsan Z Khan will talk about Perturbative Factorization Algebras Time: 4:30-5:30 pm, at Science Center (1 Oxford St), Hall E.
11/26: no meeting.
12/3: Sunghyuk Park and Vasily Krylov will talk about factorization homology.