D-geometric Structure of Orbifolds

Details D-geometric Structure of Orbifolds D-geometric Structure of Orbifolds

2002-06-02

arxiv.org/abs/hep-th/0206012v1

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, 10 figures

Scientific paper

We study D-branes on abelian orbifolds C^d/Z_N for d=2, 3. The toric data describing the D-brane vacuum moduli space, which represents the geometry probed by D-branes, has certain redundancy compared with the classical geometric description of the orbifolds. We show that the redundancy has a simple combinatorial structure and find analytic expressions for degrees of the redundancy. For d=2 the structure of the redundancy has a connection with representations of SU(N) Lie algebra, which provides a new correspondence between geometry and representation theory. We also prove that non-geometric phases do not appear in the Kahler moduli space for d=2.

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