The thermodynamics of interacting vortices constricted to move in one-dimensional tracks carved out on superconducting film in the extreme type-II limit is mapped onto the Coulomd gas model of random matrices.
@article{arxiv.cond-mat/9405067,
title = {Vortices on "rail road tracks": A possible realization of random matrix ensemble},
author = {Y Chen and H J Jensen},
journal= {arXiv preprint arXiv:cond-mat/9405067},
year = {2009}
}