Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2002-03-27
Phys. Rev. E 66 (2002) 011105
Physics
Condensed Matter
Statistical Mechanics
REVTeX4, 12 pages, no figure, minor corrections made for publication
Scientific paper
10.1103/PhysRevE.66.011105
We consider the diffusion scaling limit of the one-dimensional vicious walker model of Fisher and derive a system of nonintersecting Brownian motions. The spatial distribution of $N$ particles is studied and it is described by use of the probability density function of eigenvalues of $N \times N$ Gaussian random matrices. The particle distribution depends on the ratio of the observation time $t$ and the time interval $T$ in which the nonintersecting condition is imposed. As $t/T$ is going on from 0 to 1, there occurs a transition of distribution, which is identified with the transition observed in the two-matrix model of Pandey and Mehta. Despite of the absence of matrix structure in the original vicious walker model, in the diffusion scaling limit, accumulation of contact repulsive interactions realizes the correlated distribution of eigenvalues in the multimatrix model as the particle distribution.
Katori Makoto
Tanemura Hideki
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