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Title

D-branes in Lie groups of rank > 1

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Published in Journal of High Energy Physics. 2005, vol. 2005, no. 08, p. 062 - 062
Abstract We consider a low-energy effective action for the gauge field on Wess-Zumino- Witten D-branes in a compact simple Lie group, in the limit k ! 1. We prove that the effective action is bounded from below, and study stability of various D-brane configurations, including some class of non-maximally symmetric ones. We show that for Lie groups of rank higher than one, the D-brane ground state breaks the Kac-Moody symmetry of the boundary theory. We then give arguments hinting that the ”fuzzy sphere” D2-brane which is known to be the stable brane configuration in the case of SU(2), may also correspond to the ground state in other compact simple Lie groups.
Keywords D-branesTachyon CondensationMatrix Models
Stable URL http://archive-ouverte.unige.ch/unige:12150
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Deposited on : 2010-10-19

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