Augmentation-polynomial conjecture for monotone Lagrangian two-tori

Let L(CP2,ωFS)L\subset(\mathbb{C}P^2,\omega_{\operatorname{FS}}) be an embedded monotone Lagrangian two-torus, and let Λ\Lambda be the Legendrian lift of its canonical threefold Bohr–Sommerfeld cover. Assume that

H0(A(Λ),)=C[μ±1,λ±1]/AugΛ(μ,λ),H_0(\mathcal{A}(\Lambda),\partial)=\mathbb{C}[\mu^{\pm1},\lambda^{\pm1}]/\langle \mathcal{A}ug_{\Lambda}(\mu,\lambda)\rangle,

where AugΛ(μ,λ)\mathcal{A}ug_{\Lambda}(\mu,\lambda) is the augmentation polynomial, uniquely determined up to multiplication by a unit under these assumptions. Let PL(u,v)\mathfrak{P}_L(u,v) denote the superpotential of LL. Augmentation-polynomial conjecture. Up to multiplication by a unit, the superpotential can be recovered from the augmentation polynomial by

PL(u,v)=AugΛ(u3,v)uC[u±3,v±1],\mathfrak{P}_{L}(u,v)=\mathcal{A}ug_{\Lambda}(u^3,v)\in u\cdot\mathbb{C}[u^{\pm 3},v^{\pm1}],

of ideals, using suitable choices of bases of H1(L)H_1(L) and H1(Λ)H_1(\Lambda), capping paths, and an appropriate normalization of AugΛ(μ,λ)\mathcal{A}ug_{\Lambda}(\mu,\lambda). This proposes a direct relation between the augmentation variety of the Legendrian lift and the Maslov-two disc count defining the Lagrangian superpotential; the source confirms the relation for the monotone Clifford and Chekanov tori by hands-on comparison but states the general assertion as a conjecture.

Sources & referencesView supporting material

Primary source

Georgios Dimitroglou Rizell and Roman Golovko, “Legendrian submanifolds from Bohr-Sommerfeld covers of monotone Lagrangian tori”, arXiv:1901.08415 (2021).

Additional references

2 papers in this index state this conjecture (2004–2019). The statement above is taken from the most recent of them; the others are arXiv:math/0407071.

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