中文

规范Landau-Ginzburg模型的分级倾斜及其几何应用

代数几何 2021-06-08 v5

摘要

本文为射影簇上向量丛中正则截面的规范Landau-Ginzburg模型发展了分级倾斜理论。我们的主要理论结果在特定条件下将此类截面ss的零点轨迹Z(s)Z(s)的有界导出范畴描述为非交换商代数Λ/s\Lambda/\langle s\rangle的分级奇点范畴:Db(cohZ(s))Dsggr(Λ/s)D^b(\mathrm{coh} Z(s))\simeq D^{\mathrm{gr}}_{\mathrm{sg}}(\Lambda/\langle s\rangle)。几何应用均来自齐次规范线性sigma模型。在此情形下,Λ\Lambda是定义模型C\mathbb{C}^*-等变仿射GIT商的不变量环的非交换解消。我们获得了以下簇族导出范畴的纯代数描述:完全交、各向同性辛和正交Grassmann流形、Beauville-Donagi IHS 4-fold。

关键词

引用

@article{arxiv.1907.10099,
  title  = {Graded tilting for gauged Landau-Ginzburg models and geometric applications},
  author = {Christian Okonek and Andrei Teleman},
  journal= {arXiv preprint arXiv:1907.10099},
  year   = {2021}
}

备注

36 pages. Changes in the revised version: minor corrections, for instance in Theorem 1.26, we added "one of the conditions in (1) or (2) of Theorem 1.24" in the list of assumptions. On p. 32, in the paragraph dedicated to the Beauville-Donagi 4-folds, we now check in detail the codimension condition needed for the application of Theorem 1.24. New revision: minor corrections