Week 11.01.2020 – 19.01.2020

Tuesday

Moduli spaces of BPS Wilson loops in 3d and quiver varieties

Regular Seminar Nadav Drukker (King's College London)

at:
13:30 IC
room H503
abstract:

In this talk I will reexamine the classification of BPS Wilson loops in 3d super Chern-Simons-matter theories. Over the last several years a large class of increasingly intricate constructions of such operators have been found. They involve both discrete and continuous parameters chosen to satisfy varied conditions. In my talk I will explain that the discrete parameters are related to choosing a graded quiver diagram, which may be a subquiver or a cover of the one defining the theory. The continuous parameters are then a singular limit of the variety, a complex manifold, associated to that quiver.

Wednesday

TBA

Regular Seminar Hynek Paul (Southampton)

at:
14:00 IC
room H503
abstract:

TBA

Thursday

Exact structure constants of determinant operators

Regular Seminar Edoardo Vescovi (Imperial College London)

at:
14:00 QMW
room G O Jones 610
abstract:

In this talk, based on [1906.07733] and [1907.11242] with Y. Jiang and S. Komatsu, we derive the first non-perturbative result for the structure constant of two determinant operators and a non-BPS single-trace operator of finite length in planar N=4 SYM. First, we introduce an effective theory for such correlators at zero coupling. The form of the result supports the interpretation of the three-point function as an overlap between an integrable boundary state, which we determine using symmetry and integrability, and the state describing the single-trace operator. Second, we use thermodynamic Bethe ansatz to derive a non-perturbative expression for such overlap. Finally, we discuss applications that could be addressed with these methods.