Random words, quantum statistics, central limits, Random matrices
Random words, quantum statistics, central limits, Random matrices
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随机词、量子统计、中心极限、随机矩阵
DOI:
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发表时间:
1999
期刊:
影响因子:
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通讯作者:
G. Kuperberg
中科院分区:
文献类型:
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作者:
G. Kuperberg
Recently Tracy and Widom conjectured [math.CO/9904042] and Johansson proved
[math.CO/9906120] that the expected shape lambda of the semi-standard tableau produced by
a random word in k letters is asymptotically the spectrum of a random traceless k by k GUE
matrix. In this article we give two arguments for this fact. In the first argument, we
realize the random matrix itself as a quantum random variable on the space of random words,
if this space is viewed as a quantum state space. In the second argument, we show that the
distribution of lambda is asymptotically given by the usual local limit theorem, but the
resulting Gaussian is disguised by an extra polynomial weight and by reflecting walls. Both
arguments more generally apply to an arbitrary finite-dimensional representation V of an
arbitrary simple Lie algebra g. In the original question, V is the defining representation
of g = su(k).