Logarithmic topological mirror symmetry for stringy intersection cohomology

Let CC be a smooth projective curve with g(C)2g(C)\geq 2, let GG be a connected semisimple group, and let GG^{\vee} be its Langlands dual. Let L{\mathcal L} be a line bundle on CC with degL>2g(C)2\deg {\mathcal L}>2g(C)-2, and let HG,Lss\mathrm{H}_{G,{\mathcal L}}^\mathrm{ss} denote the good moduli space of semistable L{\mathcal L}-twisted GG-Higgs bundles. Write IHst(HG,Lss)\mathrm{IH}_{\mathrm{st}}^*(\mathrm{H}_{G,{\mathcal L}}^\mathrm{ss}) for its stringy intersection cohomology. Logarithmic topological mirror symmetry conjecture. There exists a natural isomorphism

IHst(HG,Lss)IHst(HG,Lss).\mathrm{IH}_{\mathrm{st}}^*(\mathrm{H}_{G,{\mathcal L}}^\mathrm{ss}) \cong \mathrm{IH}_{\mathrm{st}}^*(\mathrm{H}_{G^{\vee},{\mathcal L}}^\mathrm{ss}).

This is the logarithmic, or KC(D)K_C(D)-twisted for D>0D>0, version of topological mirror symmetry; the supplied text does not state its resolution status.

Sources & referencesView supporting material

Primary source

Tasuki Kinjo, “Multiplicative dimensional reduction”, arXiv:2511.16342 (2025).

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