利用双重仿射 Grassmannian 证明 6d $a$-定理
高能物理 - 理论
2025-05-01 v2 代数几何
表示论
摘要
本文包含两个具有独立意义的结果,前者更具数学性质,后者更具物理性质。首先,我们证明了被称为 A 型轨形瞬子 (orbi-instantons) 的 6d 超共形场论 (SCFTs) 之间 Higgs 分支重整化群 (RG) 流的层级结构,由 的双重仿射 Grassmannian 中某些层 (strata) 和横截切片 (transverse slices) 的 Hasse 图给出。其次,我们利用该 Hasse 图上自然定义的偏序关系,证明了轨形瞬子 Higgs 分支 RG 流的 -定理,从而穷尽了偶数维(超对称)情形下的 -定理列表。
引用
@article{arxiv.2312.17178,
title = {Proving the 6d a-theorem with the double affine Grassmannian},
author = {Marco Fazzi and Suvendu Giri and Paul Levy},
journal= {arXiv preprint arXiv:2312.17178},
year = {2025}
}
备注
v2: typos fixed, improved discussion in sections 1.4, 3.2.5, 4.1, A.1; added appendix C to clarify the connection with the findings of 2401.08757, highlighting the role of massive E-strings in the full Higgs branch of orbi-instantons. v1: Part III of a series of papers. Computer algebra GAP file, along with high resolution vectorized versions of figures 5,6,7 included in submission source