Ulrich bundles on cubic fourfolds
نویسندگان
چکیده
We show the existence of rank 6 Ulrich bundles on a smooth cubic fourfold. First, we construct simple sheaf $\mathcal E$ as an elementary modification ACM bundle Such appears extension two Lehn–Lehn–Sorger–van Straten sheaves. Then prove that general deformation E(1)$ becomes Ulrich. In particular, this says fourfolds have complexity 6.
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ژورنال
عنوان ژورنال: Commentarii Mathematici Helvetici
سال: 2022
ISSN: ['0010-2571', '1420-8946']
DOI: https://doi.org/10.4171/cmh/546