Periodic cyclic homology conjecture for categorical DT theory of critical loci

Let M\mathfrak{M} be a quasi-smooth QCA derived stack, let N=t0(ΩM[1])\mathcal{N}=t_0(\Omega_{\mathfrak{M}}[-1]) be its associated d-critical locus, and let Nst\mathcal{N}_{\mathrm{st}} be the scheme obtained by removing the specified conical closed substack. Let ϕN\phi_{\mathcal{N}} be the perverse sheaf of vanishing cycles with monodromy TNT_{\mathcal{N}}, constructed using the canonical orientation data, and let vdimM\operatorname{vdim}\mathcal{M} be the rank of LMM\mathbb{L}_{\mathfrak{M}}|_{\mathcal{M}}. Periodic cyclic homology conjecture. There should be an isomorphism of Z/2\mathbb{Z}/2-graded vector bundles on SpfC((u))\operatorname{Spf}\mathbb{C}((u)) with connections

(HP(DTdgC(Nst)),u)Z/2(H+vdimM(Nst,ϕNNst)QC((u)),d+TN/u).(\operatorname{HP}_{\ast}(\mathcal{DT}_{\mathrm{dg}}^{\mathbb{C}^{\ast}}(\mathcal{N}_{\mathrm{st}})),\nabla_u)^{\mathbb{Z}/2}\cong\left(H^{\ast+\operatorname{vdim}\mathcal{M}}(\mathcal{N}_{\mathrm{st}},\phi_{\mathcal{N}}|_{\mathcal{N}_{\mathrm{st}}})\otimes_{\mathbb{Q}}\mathbb{C}((u)),d+T_{\mathcal{N}}/u\right).

This is the precise local relation between categorical DT theory and cohomological DT theory, extending the preceding globalization conjecture; the source does not give a resolution.

Sources & referencesView supporting material

Primary source

Yukinobu Toda, “Categorical Donaldson-Thomas theory for local surfaces”, arXiv:1907.09076 (2021).

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