Extensibility conjecture for doubly-periodic anti-self-dual instantons

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Let AA be an anti-self-dual connection on a bundle E→T×CE\rightarrow T\times\mathbb{C}, with curvature satisfying ∣FA∣∼O(∣w∣−2)|F_A|\sim O(|w|^{-2}). A holomorphic structure (E,∂‾A)(E,\overline{\partial}_A) is induced by AA. Extensibility conjecture. If

∣FA∣∼O(∣w∣−2),|F_A|\sim O(|w|^{-2}),

then there is a holomorphic vector bundle E→T×P1{\cal E}\rightarrow T\times\mathbb{P}^1 such that

E∣T×(P1∖{∞})≃(E,∂‾A).{\cal E}|_{T\times(\mathbb{P}^1\setminus\{\infty\})}\simeq(E,\overline{\partial}_A).

In other words, AA is extensible. The paper presents this as an expected analytical result: it would show that the stated curvature decay is sufficient for extensibility. Whether this implication holds is left open.

References

Primary source

Marcos Jardim, “Construction of doubly-periodic instantons”, arXiv:math/9909069 (2000).

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