arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.02821math.QAmath.RT
收藏

扩张仿射李代数、顶点代数和约化群

Extended affine Lie algebras, vertex algebras, and reductive groups

Fulin Chen, Haisheng Li, Shaobin Tan, Qing Wang

摘要:

本文研究了扩张仿射李代数$\widehat{sl_N}(\mathbb{C}_q)$(其中$\mathbb{C}_q=\mathbb{C}_q[t_0^{\pm1},t_1^{\pm1}]$是无理量子2-环面)、单仿射顶点代数$L_{\widehat{sl_{\infty}}}(\ell,0)$(其中$\ell$是正整数)和$GL_\ell(\mathbb{C})$的Levi子群$G$的表示之间的自然联系.首先,我们给出了水平$\ell$的可积限制$\widehat{sl_N}(\mathbb{C}_q)$ -模范畴与等变拟$L_{\widehat{sl_{\infty}}}(\ell,0)$ -模范畴之间的一个典范同构。其次,我们对不可约$\mathbb{N}$ -分次等变拟$L_{\widehat{sl_{\infty}}}(\ell,0)$ -模进行了分类.第三,在某些费米子Fock空间上建立了不可约$\mathbb{N}$ -分次等变拟$L_{\widehat{sl_{\infty}}}(\ell,0)$ -模与不可约正则$G$ -模之间的对偶.第四,我们得到了不可约$\mathbb{N}$ -分次等变拟$L_{\widehat{sl_{\infty}}}(\ell,0)$ -模的一个显式实现.第五,我们完全确定了以下分支:1.拟模从$L_{\widehat{sl_{\infty}}}(\ell,0)\otimes L_{\widehat{sl_{\infty}}}(\ell',0)$到$L_{\widehat{sl_{\infty}}}(\ell+\ell',0)$的分支。2从$\widehat{sl_N}(\mathbb{C}_q)$到它的Levi子代数的分支。3 $\widehat{sl_N}(\mathbb{C}_q)$到其子代数$\widehat{sl_N}(\mathbb{C}_q[t_0^{\pm M_0},t_1^{\pm M_1}])$的分支。

英文摘要:

In this paper, we explore natural connections among the representations of the extended affine Lie algebra $\widehat{sl_N}(\mathbb{C}_q)$ with $\mathbb{C}_q=\mathbb{C}_q[t_0^{\pm1},t_1^{\pm1}]$ an irrational quantum 2-torus, the simple affine vertex algebra $L_{\widehat{sl_{\infty}}}(\ell,0)$ with $\ell$ a positive integer, and Levi subgroups $G$ of $GL_\ell(\mathbb{C})$. First, we give a canonical isomorphism between the category of integrable restricted $\widehat{sl_N}(\mathbb{C}_q)$-modules of level $\ell$ and that of equivariant quasi $L_{\widehat{sl_{\infty}}}(\ell,0)$-modules. Second, we classify irreducible $\mathbb{N}$-graded equivariant quasi $L_{\widehat{sl_{\infty}}}(\ell,0)$-modules. Third, we establish a duality between irreducible $\mathbb{N}$-graded equivariant quasi $L_{\widehat{sl_{\infty}}}(\ell,0)$-modules and irreducible regular $G$-modules on certain fermionic Fock spaces. Fourth, we obtain an explicit realization of every irreducible $\mathbb{N}$-graded equivariant quasi $L_{\widehat{sl_{\infty}}}(\ell,0)$-module. Fifth, we completely determine the following branchings: 1 The branching from $L_{\widehat{sl_{\infty}}}(\ell,0)\otimes L_{\widehat{sl_{\infty}}}(\ell',0)$ to $L_{\widehat{sl_{\infty}}}(\ell+\ell',0)$ for quasi modules. 2 The branching from $\widehat{sl_N}(\mathbb{C}_q)$ to its Levi subalgebras. 3 The branching from $\widehat{sl_N}(\mathbb{C}_q)$ to its subalgebras $\widehat{sl_N}(\mathbb{C}_q[t_0^{\pm M_0},t_1^{\pm M_1}])$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑