Berry-Tabor 1977 (Proc. R. Soc. A 356:375) argued that quantum counterparts of *integrable* classical systems have uncorrelated eigenvalues on average — no level repulsion — giving a Poisson nearest-neighbor spacing distribution P(s) =…
Berry-Tabor 1977 (Proc. R. Soc. A 356:375) argued that quantum counterparts of *integrable* classical systems have uncorrelated eigenvalues on average — no level repulsion — giving a Poisson nearest-neighbor spacing distribution P(s) =…