| |
 |
UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:42 |
 |
|
|
|
Conference: Bucharest University Faculty of Physics 2018 Meeting
Section: Theoretical Physics and Applied Mathematics
Title:
Time-Dependent Orbital-Free Density Functional Theory for the fermionic gas
Authors:
Dragos I. Palade
*
Affiliation:
1) Faculty of Physics, University of Bucharest, Romania
2) National Institute for Laser, Plasma and Radiation Physics,
Magurele, Bucharest, Romania
E-mail
dragos.i.palade@gmail.com
Keywords:
Density Functional Theory, quantum, pressure, fluid
Abstract:
It has been proven that, in the framework of Time Dependent Density Functional Theory, the dynamics of a system of fermions can be described within a hydrodynamic Model. Unfortunately, this model lacks an exact representation
of the kinetic pressure tensor as density functional. Although simple approximations are known, these are not able to reproduce basic properties of the dynamics, features that can be captured in more complex kinetic/microscopic theories.
For this reason, in the present work, a novel density functional approximation for the kinetic pressure of a fermionic gas is derived.
The proposal is tested both in linear and non-linear regimes, yielding good overall improvements in comparison with
the old approximations.
|
|
|
|