4.4 Article

Intersecting branes, domain walls and superpotentials in 3d gauge theories

Journal

JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 8, Pages -

Publisher

SPRINGER
DOI: 10.1007/JHEP08(2014)119

Keywords

Brane Dynamics in Gauge Theories; Intersecting branes models; D-branes

Funding

  1. STFC
  2. European Research Council under the European Union [STG 279943]
  3. Science and Technology Facilities Council [ST/J000434/1] Funding Source: researchfish
  4. STFC [ST/J000434/1] Funding Source: UKRI

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We revisit the Hanany-Witten brane construction of 3d gauge theories with N = 2 supersymmetry. Instantons are known to generate a superpotential on the Coulomb branch of the theory. We show that this superpotential can be viewed as arising from the classical scattering of domain wall solitons. The domain walls live on the worldvolume of the fivebranes and their existence relies on the recent observation that the charged hyper-multiplet at the intersection of perpendicular D-branes has non-canonical kinetic terms. We further show how Dp branes may be absorbed at the intersection of perpendicular D(p + 4)-branes where they appear as BPS sigma-model lumps.

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