arXivDaily arXiv每日学术速递 周一至周五更新
arXiv math/0007105math.QAmath.RT
收藏

q为单位单位根的非标准变形U '_q(so_n)

The Nonstandard Deformation U'_q(so_n) For q a Root of Unity

N. Z. Iorgov, A. U. Klimyk

摘要:

本文描述了与Drinfeld-Jimbo量子代数U_q(so_n)不一致的李代数so_n的泛包络代数U(so_n)的非标准q-变形U '_q(so_n)的性质。特别地,证明了存在从U '_q(so_n)到U_q(sl_n)的同构,并且U'_q(so_n)的有限维不可约表示分离了这个代数的元素.给出了代数U '_q(so_n)的不可约表示,其中q是单位根q^p=1.这些表示的主要类作用于p^N维线性空间(其中N是李代数so_n的正根的个数),并由r=dim so_n复参数给出。还描述了几类退化不可约表示。

英文摘要:

We describe properties of the nonstandard q-deformation U'_q(so_n) of the universal enveloping algebra U(so_n) of the Lie algebra so_n which does not coincide with the Drinfeld--Jimbo quantum algebra U_q(so_n). In particular, it is shown that there exists an isomorphism from U'_q(so_n) to U_q(sl_n) and that finite dimensional irreducible representations of U'_q(so_n) separate elements of this algebra. Irreducible representations of the algebras U'_q(so_n) for q a root of unity q^p=1 are given. The main class of these representations act on p^N-dimensional linear space (where N is a number of positive roots of the Lie algebra so_n) and are given by r=dim so_n complex parameters. Some classes of degenerate irreducible representations are also described.

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。

↑