Toric Sasaki-Einstein manifolds and Heun equations

Details Toric Sasaki-Einstein manifolds and Heun equations Toric Sasaki-Einstein manifolds and Heun equations

2005-12-12

arxiv.org/abs/hep-th/0512124v3

Nucl.Phys.B742:275-294,2006

Physics

High Energy Physics

High Energy Physics - Theory

26 pages, no figures; references added; v3: revised version, to appear in Nuclear Physics B

Scientific paper

10.1016/j.nuclphysb.2006.03.003

Symplectic potentials are presented for a wide class of five dimensional toric Sasaki-Einstein manifolds, including L^{a,b,c} which was recently constructed by Cvetic et al. The spectrum of the scalar Laplacian on L^{a,b,c} is also studied. The eigenvalue problem leads to two Heun's differential equations and the exponents at regular singularities are directly related to toric data. By combining knowledge of the explicit symplectic potential and the exponents, we show that the ground states, or equivalently holomorphic functions, have one-to-one correspondence with integral lattice points in the convex polyhedral cone. The scaling dimensions of the holomorphic functions are simply given by scalar products of the Reeb vector and the integral vectors, which are consistent with R-charges of BPS states in the dual quiver gauge theories.

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