**PHYSICS
SEMINAR**

**Jose
Balduz**

Department of Physics

Mercer University

Wednesday,
April 7, 2004

Willet Science Center 101

**"Density
Functional Theory"
**

**
Abstract:
**A brief introduction to DFT will be given. This is a method to
analyze many-electron systems based on the electron density rather than the full
many-body wavefunction. It has both a solid theoretical basis and practical
methods of application. We will start with a basic description of the problem,
including the wavefunction and density matrices, and the standard Coulomb Hamiltonian.
We will then describe the Hartree-Fock approach to this problem and the Thomas-Fermi
model. Then DFT proper will be introduced: the Hohenberg-Kohn Theorems (I & II),
issues of representability of the density and the constrained-search formulation
of Levy. Finally the Kohn-Sham method using electron orbitals will be presented.
*Please
join us for light refreshments outside WSC 109 at 4:15.
*

**Mercer
Physics Seminar Homepage**

**Mercer
Physics Department
**