6 papers
Structure of nonuniform hard sphere fluids from shifted linear truncations of functional expansions
Yng-Gwei Chen, John D. Weeks
Percus showed that approximate theories for the structure of nonuniform hard sphere fluids can be generated by linear truncations of functional expansions of the nonuniform density…
Connecting systems with short and long ranged interactions: local molecular field theory for ionic fluids
Yng-gwei Chen, Charanbir Kaur, John D. Weeks
Structural and thermodynamic properties of ionic fluids are related to those of a simpler ``mimic'' system with short ranged intermolecular interactions in a spatially varying effe…
Modified Statistical Treatment of Kinetic Energy in the Thomas-Fermi Model
Jeng-Da Chai, John D. Weeks
We try to improve the Thomas-Fermi model for the total energy and electron density of atoms and molecules by directly modifying the Euler equation for the electron density, which w…
Incorporating molecular scale structure into the van der Waals theory of the liquid-vapor interface
Kirill Katsov, John D. Weeks
We have developed a new and general theory of nonuniform fluids that naturally incorporates molecular scale information into the classical van der Waals theory of slowly varying in…
On the mean field treatment of attractive interactions in nonuniform simple fluids
Kirill Katsov, John D. Weeks
We study thermodynamic and structural properties of a Lennard-Jones liquid at a state very close to the triple point as the radius of a hard sphere solute is varied. Oscillatory pr…
Determining liquid structure from the tail of the direct correlation function
Kirill Katsov, John D. Weeks
In important early work, Stell showed that one can determine the pair correlation function h(r) of the hard sphere fluid for all distances r by specifying only the "tail" of the di…