title: Hard disks in narrow channels.
abstract: The thermodynamic and dynamical behavior of a gas of hard disks in a narrow channel is studied theoretically and numerically. Using a virial expansion, we find that the pressure and collision frequency curves exhibit a singularity at a channel width corresponding to twice the disk diameter. As expected, the maximum Lyapunov exponent is also found to display a similar behavior. At high density, these curves are dominated by solidlike configurations which are different from the bulk ones, due to the channel boundary conditions.
authors.affiliation: Institut für Experimentalphysik, Universität Wien, Boltzmanngasse 5, A-1090 Vienna, Austria. tina@ap.univie.ac.at
authors.forename: Ch
authors.initials: Ch
authors.lastname: Forster
authors.forename: D
authors.initials: D
authors.lastname: Mukamel
authors.forename: H A
authors.initials: HA
authors.lastname: Posch