Quantum Kirwan map conjecture in the semipositive case

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Let (M,ω,μ)(M,\omega,\mu) satisfy (H), be convex at infinity, and be semipositive. Let φ\varphi be a map

φ:H2G(M,Z)→Hom⁡Q(HG∗(M),H∗(M‾))\varphi:H_2^G(M,\mathbb{Z})\to\operatorname{Hom}_{\mathbb{Q}}\big(H_G^*(M),H^*({\overline{M}})\big)

satisfying the equivariant Novikov condition, and let φ∗\varphi_* be the induced map

φ∗:QH⁡G∗(M,ω)→QH⁡∗(M‾,ω‾).\varphi_*:{\operatorname{QH}}^*_G(M,\omega)\to{\operatorname{QH}}^*({\overline{M}},{\overline{\omega}}).

Here κ\kappa denotes the classical Kirwan map. Quantum Kirwan map conjecture. There exists such a map φ\varphi for which φ∗\varphi_* is a surjective ring homomorphism and

φ(0)=κ,\varphi(0)=\kappa,

with

⟨[ω−μ],B⟩≤0, B≠0⟹φ(B)=0.\big\langle[\omega-\mu],B\big\rangle\leq 0,\ B\neq 0\quad\Longrightarrow\quad\varphi(B)=0.

If proven, this would give a recursion formula for the quantum cohomology of the symplectic quotient in terms of equivariant quantum cohomology and φ\varphi.

References

Primary source

Fabian Ziltener, “A Quantum Kirwan Map: Bubbling and Fredholm Theory for Symplectic Vortices over the Plane”, arXiv:1209.5866 (2012).

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