C. Dembowski et al., Gaussian unitary ensemble statistics in a time-reversal invariant microwave triangular billiard, PHYS REV E, 62(4), 2000, pp. R4516-R4519
The spectrum of a chaotic two-dimensional quantum billiard with threefold s
ymmetry has been studied in an experiment with a superconducting microwave
cavity. In total 622 eigenvalues were identified experimentally and compare
d with numerical calculations. The statistical analysis of the data shows t
hat Gaussian unitary ensemble statistics can be observed for a spectrum of
a time-reversal invariant system.