摘要翻译:
本文是描述仿射Kac-Moody群的几何Satake同构的一系列猜想模拟的第一篇。本文对仿射Kac-Moody群的仿射Grassmannian中某些拟Schubert变体的奇点构造了一个模型。利用Langlands对偶仿射Kac-Moody群的可积表示,我们提出了一个描述这些变体的(局部)交上同调的猜想,并在许多情况下检验了这个猜想。粗略地说,上述奇点是由SL(2)的有限循环子群在仿射平面商上观察瞬子的Uhlenbeck空间构造的。
---
英文标题:
《Pursuing the double affine Grassmannian I: transversal slices via
instantons on A_k-singularities》
---
作者:
Alexander Braverman and Michael Finkelberg
---
最新提交年份:
2009
---
分类信息:
一级分类:Mathematics 数学
二级分类:Algebraic Geometry 代数几何
分类描述:Algebraic varieties, stacks, sheaves, schemes, moduli spaces, complex geometry, quantum cohomology
代数簇,叠,束,格式,模空间,复几何,量子上同调
--
一级分类:Physics 物理学
二级分类:High Energy Physics - Theory 高能物理-理论
分类描述:Formal aspects of quantum field theory. String theory, supersymmetry and supergravity.
量子场论的形式方面。弦理论,超对称性和超引力。
--
一级分类:Mathematics 数学
二级分类:Representation Theory 表象理论
分类描述:Linear representations of algebras and groups, Lie theory, associative algebras, multilinear algebra
代数和群的线性表示,李理论,结合代数,多重线性代数
--
---
英文摘要:
This paper is the first in a series that describe a conjectural analog of the geometric Satake isomorphism for an affine Kac-Moody group. In this paper we construct a model for the singularities of some would-be Schubert varieties in the affine Grassmannian for an affine Kac-Moody group. We formulate a conjecture describing the (local) intersection cohomology of these varieties in terms of integrable representations of the Langlands dual affine Kac-Moody group and check this conjecture in a number of cases. Roughly speaking the above singularities are constructed by looking at the Uhlenbeck space of instantons on the quotient of the affine plane by a finite cyclic subgroup of SL(2).
---
PDF链接:
https://arxiv.org/pdf/0711.2083