Landau–Ginzburg compactification conjecture for Fano varieties

Let XX be a smooth Fano variety with very ample anticanonical class. A Landau–Ginzburg model for XX is a Laurent polynomial whose constant coefficient series coincides with the regularised quantum period of XX. A smooth log Calabi–Yau compactification is a compactification of this model to a smooth projective morphism WP1\mathcal{W}\to\mathbb{P}^1 satisfying KWf1()-K_{\mathcal{W}}\sim\mathsf{f}^{-1}(\infty).

Landau–Ginzburg compactification conjecture. XX admits a Landau–Ginzburg model with a smooth log Calabi–Yau compactification.

The conjecture is known for smooth del Pezzo surfaces, smooth Fano threefolds, and smooth Fano complete intersections in projective space. The supplied text gives no broader resolution status.

Sources & referencesView supporting material

Primary source

Mikhail Ovcharenko, “On Arithmetic Mirror Symmetry for smooth Fano fourfolds”, arXiv:2604.26592 (2026).

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