Conjecture on real structures in the LG/CY correspondence

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Let RfR_f be the Milnor ring, let Δf\Delta_f be the Landau–Ginzburg Laplacian, and let r:⨁a=0∞Rf(n+2)a→Hprim⁡n(Xf)r:\bigoplus_{a=0}^{\infty}R_f^{(n+2)a}\to H^n_{\operatorname{prim}}(X_f) be given by

r([A])=(res ΩA)n−a,a,∀ deg⁡A=(n+2)a.r([A])=({\rm res}\,\Omega_A)^{n-a,a},\qquad \forall\,\operatorname{deg}A=(n+2)a.

Suppose [A],[B]∈Rf[A],[B]\in R_f and (n−1)(n-1)-forms μ,ν\mu,\nu are such that α=A dz1∧⋯∧dzn+∂ˉfμ\alpha=A\,dz_1\wedge\cdots\wedge dz_n+\bar{\partial}_f\mu and β=B dz1∧⋯∧dzn+∂ˉfν\beta=B\,dz_1\wedge\cdots\wedge dz_n+\bar{\partial}_f\nu are Δf\Delta_f-harmonic forms. Conjecture on real structures. If α=βˉ\alpha=\bar{\beta}, then r(A)=r(B)‾r(A)=\overline{r(B)}. This proposes that complex conjugation on the Landau–Ginzburg harmonic-form side corresponds, under rr, to complex conjugation on the Calabi–Yau side; the source gives no evidence of resolution.

References

Primary source

Huijun Fan, Tian Lan and Zongrui Yang, “LG/CY correspondence between tt^* geometries”, arXiv:2011.14658 (2020).

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