arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.05412math.RT
收藏

酉Howe对偶对的形变

Deformations of unitary Howe dual pairs

Dan Ciubotaru, Hendrik De Bie, Marcelo De Martino, Roy Oste

摘要:

我们研究了Howe对偶对$(\mathrm{U}(n),\mathfrak{u}(1,1))$和$(\mathrm{U}(n),\mathfrak{u}(2|1))$到有理Cherednik代数$H_{1,c}(G,E)$的变形,该代数与作用在偶数维实向量空间$E$上的实反射群$G$有关.对于每一对,我们证明了一个合作伙伴的李(超)代数结构下的变形,这导致了一个多重性自由分解的标准模或其张量积与旋量空间。对于$E$是二维的,而$G$是二面体群的情形,我们给出了变形对和相应的联合分解的完整描述.

英文摘要:

We study deformations of the Howe dual pairs $(\mathrm{U}(n),\mathfrak{u}(1,1))$ and $(\mathrm{U}(n),\mathfrak{u}(2|1))$ to the context of a rational Cherednik algebra $H_{1,c}(G,E)$ associated with a real reflection group $G$ acting on a real vector space $E$ of even dimension. For each pair, we show that the Lie (super)algebra structure of one partner is preserved under the deformation, which leads to a multiplicity-free decomposition of the standard module or its tensor product with a spinor space. For the case where $E$ is two-dimensional and $G$ is a dihedral group, we provide complete descriptions for the deformed pair and the relevant joint-decomposition.

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。

↑