A Quantum Kirwan Map, II: Bubbling

Details A Quantum Kirwan Map, II: Bubbling A Quantum Kirwan Map, II: Bubbling

2011-06-09

arxiv.org/abs/1106.1729v1

Mathematics

Symplectic Geometry

68 pages, 5 figures

Scientific paper

Consider a Hamiltonian action of a compact connected Lie group $G$ on an aspherical symplectic manifold $(M,\omega)$. Under suitable assumptions, counting gauge equivalence classes of (symplectic) vortices on the plane $R^2$ conjecturally gives rise to a quantum deformation $Qk_G$ of the Kirwan map. This is the second of a series of articles, whose goal is to define $Qk_G$ rigorously. The main result is that every sequence of vortices with uniformly bounded energies has a subsequence that converges to a genus 0 stable map of vortices on $R^2$ and holomorphic spheres in the symplectic quotient. Potentially, the map $Qk_G$ can be used to compute the quantum cohomology of many symplectic quotients. Conjecturally it also gives rise to quantum generalizations of non-abelian localization and abelianization.

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