Waterlike dynamic anomalies in a liquid described by a core-softened potential.
We present a theoretical study of transport properties of a liquid comprised of particles interacting via isotropic core-softened potential. Shear viscosity and self-diffusion coefficient are computed on the basis of the mode-coupling theory, with required structural input obtained from thermodynamically self-consistent integral equation theory. Both self-diffusion coefficient and viscosity display waterlike anomalous density dependence, with diffusivity increasing and viscosity decreasing with density within a particular density range along several isotherms below a certain temperature. Our theoretical results for both transport coefficients are in good agreement with the simulation data.
Egorov
S A
SA
Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901, USA. sae6z@virginia.edu
D008956:Models, Chemical; D013816:Thermodynamics; D014867:Water / Q000737:chemistry*
D014867:Water