arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1509.00537math-phmath.MPquant-ph
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正交群与酉群的正交性

Volumes of orthogonal groups and unitary groups

Lin Zhang

摘要:

矩阵积分在不同的领域有许多应用。这篇综述文章首先介绍了详细的关键背景知识矩阵积分。然后分别计算了正交群和酉群的体积。作为统一,我们给出了紧李群的Mcdonald体积公式.利用这个体积公式,可以很容易地导出正交群和酉群的体积。应用程序也被提出。具体地说,利用幺正群的体积计算混合量子态的体积。并计算了酉群中度量球的体积。本文没有新的结果,只是对已有结果的详细而初步的证明。这篇文章的目的是教学,并收集在一个地方许多,如果不是全部,量子信息应用的卷正交和酉群。

英文摘要:

The matrix integral has many applications in diverse fields. This review article begins by presenting detailed key background knowledge about matrix integral. Then the volumes of orthogonal groups and unitary groups are computed, respectively. As a unification, we present Mcdonald's volume formula for a compact Lie group. With this volume formula, one can easily derives the volumes of orthogonal groups and unitary groups. Applications are also presented as well. Specifically, The volume of the set of mixed quantum states is computed by using the volume of unitary group. The volume of a metric ball in unitary group is also computed as well. There are no new results in this article, but only detailed and elementary proofs of existing results. The purpose of the article is pedagogical, and to collect in one place many, if not all, of the quantum information applications of the volumes of orthogonal and unitary groups.

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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