"Vortices in 4d, N=2 SQCD and their Worldsheet Theory from Supersymmetric Localization," by Efrat Gerchkovitz (Weizmann Institute)

Date: 
Tuesday, May 2, 2017 - 4:00pm to 5:00pm
Series: 
TEP Seminars

TEP Seminar

Physics & Astronomy Building (PAB) Room 4-330
Tuesday, May 2, 2017
4-5PM

Guest Speaker: Efrat Gerchkovitz (Weizmann Institute)​

Talk Title: "Vortices in 4d, N=2 SQCD and their Worldsheet Theory from Supersymmetric Localization"

Abstract:

I will describe work in progress, with Avner Karasik and Zohar Komargodski, in which we use supersymmetric localization techniques to study the low-energy dynamics of BPS vortex-strings in 4d, N=2 supersymmetric QCD. The theories that we study have a moduli space of BPS-vortices, and the low energy fluctuations around a stable vortex solution are captured by a two-dimensional N=(2,2) theory on the worldsheet of the vortex. We propose a prescription for extracting the two-sphere partition function of the worldsheet theory from the four-sphere partition function of the four-dimensional parent theory. We use this prescription to extract information on the worldsheet theory in cases that were not discussed in the literature, and to discuss the existence of a two-dimensional effective description when the bulk theory is not gapped.

Location: 
PAB 4-330