Surface defects from fractional branes. Part I

S. K. Ashok, M. Billò, M. Frau, A. Lerda, S. Mahato

Research output: Contribution to journalArticlepeer-review

Abstract

We show that the Gukov-Witten monodromy defects of supersymmetric Yang-Mills theory can be realized in perturbative string theory by considering an orbifold background of the Kanno-Tachikawa type and placing stacks of fractional D3-branes whose world-volume partially extends along the orbifold directions. In particular, we show that turning on a constant background value for some scalar fields in the closed string twisted sectors induces a non-trivial profile for the gauge field and one of the complex scalars of the world-volume theory, and that this profile exactly matches the singular behavior that one expects for a Gukov-Witten surface defect in the N = 4 super Yang-Mills theory. To keep the presentation as simple as possible, in this work we restrict our analysis to surface defects corresponding to a ℤ2 orbifold and defer the study of the most general case to a companion paper.

Original languageEnglish
Article number51
JournalJournal of High Energy Physics
Volume2020
Issue number7
DOIs
Publication statusPublished - 1 Jul 2020

Keywords

  • D-branes
  • Duality in Gauge Field Theories
  • Extended Supersymmetry
  • Nonperturbative Effects

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