Comment on ``Adsorption of Polyelectrolyte onto a Colloid of Opposite Charge''
ArXiv cond-mat/9901152 (1999)
Abstract:
In a recent Letter, Gurovitch and Sens studied the adsorption of a weakly charged polyelectrolyte chain onto an oppositely charged colloidal particle. By using a variational technique they found that the colloidal particle can adsorb a polymer of higher charge than its own, and thus be ``overcharged.'' I argue that the observed overcharging by a factor of 16/5 is indeed an artifact of the approximations involved in the study. Moreover, I show that the existence of overcharging depends crucially on the choice of the trial wave function, contrary to their claim.Phase separation in two-dimensional fluids: The role of noise
Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics 59:5 (1999) R4741-R4744
Abstract:
We use a lattice Boltzmann scheme within which the noise can be turned on and off to investigate the effect of stochastic terms on the phase ordering of a two-dimensional binary fluid. Sufficiently strong noise slows the growth in the hydrodynamic regime, changing the growth exponent [Formula Presented] to [Formula Presented]. © 1999 The American Physical Society.Sine-gordon quantum magnets
International Journal of Modern Physics B 13:24-25 (1999) 2915-2925
Abstract:
We discuss applications of the Sine-Gordon model to quasi-one-dimensional quantum magnets. © World Scientific Publishing Company.A lattice Boltzmann model of ternary fluid mixtures
EUROPHYSICS LETTERS 45:3 (1999) 314-320
Correlation functions in an exactly solvable terrace-ledge-kink model
NUCLEAR PHYSICS B 556:3 (1999) 411-444