Small-covector flatness conjecture for G-Fock bundles

Let (P,Φ)(P,\Phi) be a GG-Fock bundle over SS with hermitian structure ρ\rho such that ΦP\Phi\in\mathcal{P} is positive. Let μ\mu be the induced g\mathfrak{g}-complex structure on SS, and let t(Z(Φ)Kˉ)t\in(Z(\Phi)\bar K)^* be a covector. The covector tt is μ\mu-holomorphic when the associated connection has curvature in Im(adΦ)\operatorname{Im}(\operatorname{ad}_\Phi). Small-covector flatness conjecture. If tt is μ\mu-holomorphic and small, then there exists a gauge transformation ηΩ0(S,gPρ)\eta\in\Omega^0(S,\mathfrak{g}_P^{-\rho}) such that the 3-term connection associated to eηΦeηe^{-\eta}\Phi e^{\eta} and tt is flat. This extends the main conjecture by incorporating a covector and asserts flatness for sufficiently small μ\mu-holomorphic deformations; the source gives no resolution status.

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Primary source

Georgios Kydonakis, Charlie Reid and Alexander Thomas, “Fock bundles and Hitchin components”, arXiv:2310.04377 (2023).

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