| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5494329 | Nuclear Physics B | 2017 | 35 Pages |
Abstract
We propose a simple formula for the 4d-2d partition function of half-BPS surface defects in d=4, N=2 gauge theories: Z4d-2d=ãZ2dã4d. Our results are applicable for any surface defect obtained by gauging a 2d flavor symmetry using a 4d gauge group. For defects obtained via the Higgsing procedure, our formula reproduces the recent calculation by Pan and Peelaers. For Gukov-Witten defects our results reproduce the orbifold calculation by Kanno and Tachikawa. We emphasize the role of “negative vortices” which are realized as negative D0 branes.
Related Topics
Physical Sciences and Engineering
Mathematics
Mathematical Physics
Authors
A. Gorsky, B. Le Floch, A. Milekhin, N. Sopenko,