DBI analysis of generalised permutation branes

Details DBI analysis of generalised permutation branes DBI analysis of generalised permutation branes

2009-08-07

arxiv.org/abs/0908.1049v2

Physics

High Energy Physics

High Energy Physics - Theory

19 pages, computation in section 3.5.1 corrected, conclusions unchanged

Scientific paper

We investigate D-branes on the product GxG of two group manifolds described as Wess-Zumino-Novikov-Witten models. When the levels of the two groups coincide, it is well known that there exist permutation D-branes which are twisted by the automorphism exchanging the two factors. When the levels are different, the D-brane charge group demands that there should be generalisations of these permutation D-branes, and a geometric construction for them was proposed in hep-th/0509153. We give further evidence for this proposal by showing that the generalised permutation D-branes satisfy the Dirac-Born-Infeld equations of motion for arbitrary compact, simply connected and simple Lie groups G.

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