Categorical DT wall-crossing conjecture for stable-pair moduli

Fix σ=iH\sigma=iH for an ample divisor HH, v=(β,n)N1(S)v=(\beta,n)\in N_{\leq 1}(S), and a positive rational wall parameter t0WQ>0t_0\in W\cap\mathbb{Q}_{>0}. For t±=t0±εt_{\pm}=t_0\pm\varepsilon with 0<ε10<\varepsilon\ll1, let Pn(X,β)t±P_n(X,\beta)_{t_{\pm}} be the stable-pair moduli spaces in the adjacent chambers. Categorical DT wall-crossing conjecture. There exists a fully faithful functor

DTC(Pn(X,β)t)DTC(Pn(X,β)t+).\mathcal{DT}^{\mathbb{C}^{\ast}}(P_n(X,\beta)_{t_-})\hookrightarrow\mathcal{DT}^{\mathbb{C}^{\ast}}(P_n(X,\beta)_{t_+}).

This is the categorical prediction for the d-critical flip at the wall t0t_0; the source notes that the corresponding conjecture is proved in the special case where SC2S\to\mathbb{C}^2 is the blow-up at the origin, but gives no general resolution.

Sources & referencesView supporting material

Primary source

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

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