Abstract
The theory of coverings of the two-dimensional torus is a standard part of algebraic topology and has applications in several topics in string theory, for example, in topological strings. This paper initiates applications of this theory to the counting of orbifolds of toric Calabi-Yau singularities, with particular attention to Abelian orbifolds of \( {\mathbb{C}^D} \). By doing so, the work introduces a novel analytical method for counting Abelian orbifolds, verifying previous algorithm results. One identifies a p-fold cover of the torus \( {\mathbb{T}^{D - 1}} \) with an Abelian orbifold of the form \( {{{{\mathbb{C}^D}}} \left/ {{{\mathbb{Z}_p}}} \right.} \), for any dimension D and a prime number p. The counting problem leads to polynomial equations modulo p for a given Abelian subgroup of S D , the group of discrete symmetries of the toric diagram for \( {\mathbb{C}^D} \). The roots of the polynomial equations correspond to orbifolds of the form \( {{{{\mathbb{C}^D}}} \left/ {{{\mathbb{Z}_p}}} \right.} \), which are invariant under the corresponding subgroup of S D . In turn, invariance under this subgroup implies a discrete symmetry for the corresponding quiver gauge theory, as is clearly seen by its brane tiling formulation.
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ArXiv ePrint: 1105.3471
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Hanany, A., Jejjala, V., Ramgoolam, S. et al. Calabi-Yau orbifolds and torus coverings. J. High Energ. Phys. 2011, 116 (2011). https://doi.org/10.1007/JHEP09(2011)116
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DOI: https://doi.org/10.1007/JHEP09(2011)116