Instanton Counting and Wall-Crossing for Orbifold Quivers

Instanton Counting and Wall-Crossing for Orbifold Quivers
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Orbifold 箭袋的 Instanton 计数和穿墙

DOI:
10.1007/s00023-012-0195-7
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发表时间:
2012
期刊:
Annales Henri Poincaré
影响因子:
--
通讯作者:
Cirafici M
Cirafici M
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--
文献类型:
--
作者:
Cirafici M

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Noncommutative Donaldson–Thomas invariants for abelian orbifold singularities can be studied via the enumeration of instanton solutions in a six-dimensional noncommutativegauge theory; this construction is based on the generalized McKay correspondence and identifies the instanton counting with the counting of framed representations of a quiver which is naturally associated with the geometry of the singularity. We extend these constructions to compute BPS partition functions for higher-rank refined and motivic noncommutative Donaldson–Thomas invariants in the Coulomb branch in terms of gauge theory variables and orbifold data. We introduce the notion of virtual instanton quiver associated with the natural symplectic charge lattice which governs the quantum wall-crossing behaviour of BPS states in this context. The McKay correspondence naturally connects our formalism with other approaches to wall-crossing based on quantum monodromy operators and cluster algebras.
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