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Semiorthogonal decompositions for categorical Donaldson-Thomas theory via $Θ$-stratifications (2106.05496v1)

Published 10 Jun 2021 in math.AG and hep-th

Abstract: We show the existence of semiorthogonal decompositions of Donaldson-Thomas categories for $(-1)$-shifted cotangent derived stacks associated with $\Theta$-stratifications on them. Our main result gives an analogue of window theorem for categorical DT theory, which has applications to d-critical analogue of D/K equivalence conjecture, i.e. existence of fully-faithful functors (equivalences) under d-critical flips (flops). As an example of applications, we show the existence of fully-faithful functors of DT categories for Pandharipande-Thomas stable pair moduli spaces under wall-crossing at super-rigid rational curves for any relative reduced curve classes.

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