title: Distribution of Husimi zeros in polygonal billiards.
abstract: The zeros of the Husimi function provide a minimal description of individual quantum eigenstates and their distribution is of considerable interest. We provide here a numerical study for pseudointegrable billiards which suggests that the zeros tend to diffuse over phase space in a manner reminiscent of chaotic systems but nevertheless contain a subtle signature of pseudointegrability. We also find that the zeros depend sensitively on the position and momentum uncertainties (Delta q and Delta p, respectively) with the classical correspondence best when Delta q = Delta p = square root of [Planck's constant/2]. Finally, short-range correlations seem to be well described by the Ginibre ensemble of complex matrices.
authors.affiliation: Theoretical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India. dbiswas@apsara.barc.ernet.in
authors.forename: D
authors.initials: D
authors.lastname: Biswas
authors.forename: S
authors.initials: S
authors.lastname: Sinha