U-Duality in Supersymmetric Born-Infeld Theory
Gysbert Zwart
TL;DR
This paper explores the SL(5,Z) U-duality symmetry in supersymmetric Born-Infeld theory of D3-branes, analyzing its manifestation in the supersymmetry algebra and proposing a group action on gauge fields.
Contribution
It introduces a novel group action of U-duality on gauge theory fields and suggests U-invariance of BPS spectrum degeneracies in the supersymmetric Born-Infeld context.
Findings
SL(5,Z) symmetry in D3-brane Born-Infeld theory
Proposed group action on gauge fields in BPS sector
Evidence for U-invariance of BPS degeneracies
Abstract
The Born-Infeld theory of a toroidal D3-brane has an SL(5,Z) U-duality symmetry. We investigate how this symmetry is reflected in the supersymmetry algebra. We propose an action of the group on the gauge theory fields in the BPS sector by introducing an extra field together with an additional symmetry, and argue for the U-invariance of the degeneracies of the BPS spectrum.
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