"Emergent symmetries and 4D-2D relations for confining large N gauge theories," Aleksey Cherman (University of Washington)

Date: 
Thursday, October 29, 2015 - 10:30am to 11:30am
Series: 
TEP Seminars

TEP Seminar

Physics & Astronomy Building (PAB) Room 4-330
Thursday, October 29, 2015 
10:30-11:30AM

Guest Speaker: Aleksey Cherman (University of Washington)

Talk Title: "Emergent symmetries and 4D-2D relations for confining large N gauge theories"

Abstract:

The large N limit of confined-phase 4D gauge theories is a free limit in terms of the physical degrees of freedom, glueballs and mesons. I'll review some reasons to suspect that there may be interesting emergent symmetries organizing the spectrum of these free theories, and explain a special setting in which the spectrum can be explored analytically.  Focusing on non-supersymmetric gauge theories with massless adjoint matter, mostly in a solvable limit enabled by an S^3 compactification, I'll discuss evidence for emergent symmetries in the large N limit.  An initial hint that something curious is going on is furnished by some surprising correlations between the bosonic and fermionic spectra of some non-supersymmetric large N theories.  In exploring this we found that the partition functions of 4D large N theories have an unexpected modular structure.  These modular properties suggest a relation between 4D large N confining theories with adjoint matter and certain 2D CFTs. 

Event Attachments: 
Location: 
PAB 4-330