Should Elliptical Galaxies Be Idealised as Collisionless Equilibria?
  This talk summarises several different lines of argument suggesting that one should not expect cuspy nonaxisymmetric galaxies to exist as robust, long-lived collisionless equilibria, i.e., that such objects should not be idealised as time-independent solutions to the collisionless Boltzmann equation. 
Henry E. Kandrup (University of Florida)