arXiv · 2205.06602
We characterize smooth irreducible varieties with Ulrich twisted normal bundle.
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Angelo Felice Lopez. 2022-09-09. On varieties with Ulrich twisted normal bundles. https://arxiv.org/abs/2205.06602
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Let N be the moduli space of stable rank 2 vector bundles on a smooth projective curve of genus g>1 with fixed odd determinant. With Sebastian Torres, we previously found a semi-orthogonal decomposition of the bounded derived category of N into bounded derived categories of symmetric powers of the curve and, possibly, a phantom block. In this work, we employ the theory of weaving patterns to eliminate the possibility of a phantom, completing the proof of the decomposition conjectured by Narasimhan and, independently, by Belmans, Galkin, and Mukhopadhyay.
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