Geometry and String Theory
2017-18

This is the homepage for the UT Geometry and String Theory Seminar. At the organizational meeting we will flesh out the details of our plans for the semester. Below are some suggestions to get us started.

Fall 2017 Schedule

Date	Speaker	Topic
8/30		Organizational Meeting
9/6		Introduction + Komargodski video (pt 1)
9/13		Komargodski video (pt 2)
9/20	Ivan Tulli	anomalies, part 1
9/27	Sebastian Schulz	anomalies, part 2
10/4	Sebastian Schulz	anomalies, part 4
10/11	Arun Debray	anomalies in discrete symmetries
10/18	Arun Debray	anomalies in discrete symmetries, 2
10/25	Fei Yan	Generalized Global Symmetries, Part I
11/1	Philip Argyres
11/8	Fei & Ravi	Generalized Global Symmetries, Part II
11/15	Ravi Mohan	Generalized Global Symmetries, Part III
11/29	Clay Cordova
12/6	Ali Shehper	Comments on global symmetries, anomalies and dualities - I

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Spring 2018 Schedule

Date	Speaker	Topic
1/17		Organizational Meeting and Discussion
1/24	Val Zakharevich	Comments on global symmetries, anomalies and dualities - II
1/31	Dan Freed	On gauging finite subgroups
2/7	Andy Neitzke	Theta, time reversal, and temperature I
2/14	Andy Neitzke	Theta, time reversal, and temperature II
2/21	Fei Yan	Theta, time reversal, and temperature III
2/28	Arun Debray	2-groups
3/7	Jacques Distler	Phases of $\mathrm{QCD}_4$ , I
3/21	Chris Beem	TBA
3/28	Mario Martone	Phases of $\mathrm{QCD}_4$ , II
4/4	Mario Martone	Phases of $\mathrm{QCD}_4$ III
4/11	Ali Shehper	Phases of $\mathrm{QCD}_3$
4/18	Andy Neitzke	Abelianization of Chern-Simons
4/25	Sebastian Schulz	On 2-Group Global Symmetries and Their Anomalies - I
5/2	Ali Shehper	On 2-Group Global Symmetries and Their Anomalies - II

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References

(Higher) Symmetries, Anomaly-Matching and Phases of QCD

A. Kapustin, R. Thorngren, “Anomalies of discrete symmetries in various dimensions and group cohomology”
D. Gaiotto, A. Kapustin, N. Seiberg and B. Willett, “Generalized Global Symmetries”
F. Benini, P. Hsin and N. Seiberg, “Comments on global symmetries, anomalies, and duality in (2+1)d”
D. Gaiotto, A. Kapustin, Z. Komargodski and N. Seiberg, “Theta, Time Reversal, and Temperature”
Z. Komargodski and N. Seiberg, “A Symmetry Breaking Scenario for $\text{QCD}_3$ ”
D. S. Freed, Z. Komargodski, N. Seiberg, “The Sum Over Topological Sectors and θ in the 2+1-Dimensional CP¹ σ-Model”
D. Gaiotto, Z. Komargodski and N. Seiberg, “Time-Reversal Breaking in $\text{QCD}_4$ , Walls, and Dualities in 2+1 Dimensions”
J. Gomis, Z. Komargodski, N. Seiberg, “Phases of adjoint $\text{QCD}_3$ and dualities”
C. Cordova, P.-S. Hsin, N. Seiberg, “Time-reversal symmetry, anomalies, and dualities in (2+1)d”
Y. Tachikawa, “On gauging finite subgroups”
D. M. Hofman, N. Iqbal, “Generalized global symmetries and holography”

Mathematics Papers on 2-Groups

G. C. Baez, A. D. Lauda, “Higher-dimensional algebra V: 2-groups”
C. J. Schommer-Pries, “Central extension of smooth 2-groups and a finite-dimensional string 2-group”