Relative descendent Gromov–Witten/Pandharipande–Thomas correspondence

Let MM be a smooth projective threefold, let DD be a connected divisor, let α=(α1,,αr)\alpha=(\alpha_1,\ldots,\alpha_r) be a partition, let γjH(M,Q)\gamma_j\in H^*(M,\mathbb{Q}) be even classes, and let η\eta be relative boundary data. Under the variable change eiu=qe^{iu}=-q,

Relative descendent GW/PT correspondence.

(q)cβM/2ZPT(M/D;qτα11(γ1)ταr1(γr)η)β=(iu)cβM+(η)ηZGW(M/D;uτα11(γ1)ταr1(γr)η)β.(-q)^{-\mathsf{c}_\beta^M/2}\operatorname{Z_{PT}}\left(M/D;q\mid\tau_{\alpha_1-1}(\gamma_1)\cdots\tau_{\alpha_r-1}(\gamma_r)\mid\eta\right)_\beta = (-iu)^{\mathsf{c}_\beta^M+\ell(\eta)-|\eta|}\operatorname{Z_{GW}^{\prime}}\left(M/D;u\mid\overline{\tau_{\alpha_1-1}(\gamma_1)\cdots\tau_{\alpha_r-1}(\gamma_r)}\mid\eta\right)_\beta.

This is the relative descendent refinement of the GW/PT correspondence, with the logarithmic tangent bundle governing the relative descendent transformation.

Sources & referencesView supporting material

Primary source

Yinbang Lin and Sz-Sheng Wang, “Gromov–Witten/Pandharipande–Thomas correspondence via conifold transitions”, arXiv:2310.18170 (2025).

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