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arXiv math/0610285math.PRmath.RT
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李群和随机矩阵的表示

Representations of Lie groups and random matrices

Benoit Collins, Piotr Sniady

摘要:

研究了固定紧李群表示的渐近性。我们证明了这样的表示序列的极限行为可以用某些随机矩阵来描述;特别是表示上的操作(例如:张量积,对子群的限制)对应于随机矩阵上的一些自然操作(分别是:独立随机矩阵的和,取随机矩阵的角)。我们的证明方法是将与表示相关联的规范块矩阵视为具有非交换项的随机矩阵。

英文摘要:

We study the asymptotics of representations of a fixed compact Lie group. We prove that the limit behavior of a sequence of such representations can be described in terms of certain random matrices; in particular operations on representations (for example: tensor product, restriction to a subgroup) correspond to some natural operations on random matrices (respectively: sum of independent random matrices, taking the corners of a random matrix). Our method of proof is to treat the canonical block matrix associated to a representation as a random matrix with non-commutative entries.

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