Monopoles and Dyons in Non-Commutative Geometry
arXiv:hep-th/9909202 · doi:10.1088/1126-6708/1999/11/005
Abstract
Taking advantage of the equivalence between supersymmetric Yang-Mills theory on non-commutative spaces and the field theory limit of D3-branes in the background of NSNS 2-form field, we investigate the static properties of magnetic monopoles and dyons using brane construction techniques. When parallel D3-branes are separated by turning on a Higgs vacuum expectation value, D-strings will stretch between them at an angle which depends on the value of the background 2-form potential. These states preserve half of the supersymmetries and have the same masses as their commutative counterparts in the field theory limit. We also find stable (p,q)-dyons and string junctions. We find that they do not preserve any supersymmetry but have the same masses as their commutative counterparts. In the field theory limit, the (p,q)-dyons and the string junctions restore 1/2 and 1/4 of the 16 supersymmetries, respectively.
16 pages, LaTeX, 3 eps figures; v2. Counting of the number of preserved supercharges of (p,q) dyons before taking the field theory limit modified. Conclusions unchanged in the field theory limit. References added; v3. minor changes
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