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arXiv 1007.4758math-phhep-thmath.MP
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八元幻方的E7群

E7 groups from octonionic magic square

Sergio L. Cacciatori, Francesco Dalla Piazza, Antonio Scotti

摘要:

在本文中,我们继续我们的计划,开始在[2]中,建立显式广义欧拉角参数化的所有例外紧李群。在这里,我们解决了E7的问题,首先提供显式矩阵实现的山雀建设之间的特殊八元代数J和四元代数H的幻方产品,无论是在伴随和56维表示。然后,我们从E7的极大子群U=(E6 × U(1))/Z3出发,给出E7的欧拉参数化。其次,我们给出了所有其它极大紧子群的构造。

英文摘要:

In this paper we continue our program, started in [2], of building up explicit generalized Euler angle parameterizations for all exceptional compact Lie groups. Here we solve the problem for E7, by first providing explicit matrix realizations of the Tits construction of a Magic Square product between the exceptional octonionic algebra J and the quaternionic algebra H, both in the adjoint and the 56 dimensional representations. Then, we provide the Euler parametrization of E7 starting from its maximal subgroup U=(E6 x U(1))/Z3. Next, we give the constructions for all the other maximal compact subgroups.

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。

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