Asymmetric simple exclusion process and modified random matrix ensembles
Asymmetric simple exclusion process and modified random matrix ensembles
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DOI:
10.1016/j.nuclphysb.2004.08.016
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发表时间:
2004-05
期刊:
影响因子:
--
通讯作者:
T. Nagao;T. Sasamoto
中科院分区:
文献类型:
--
作者:
T. Nagao;T. Sasamoto
We study the fluctuation properties of the asymmetric simple exclusion process (ASEP) on an infinite one-dimensional lattice. When N particles are initially situated in the negative region with a uniform density ρ−=1, Johansson showed the equivalence of the current fluctuation of ASEP and the largest eigenvalue distribution of random matrices. We extend Johansson's formula and derive modified ensembles of random matrices, corresponding to general ASEP initial conditions. Taking the scaling limit, we find that a phase change of the asymptotic current fluctuation occurs at a critical position.