Density functional theory investigation of two-dimensional dipolar fermions in a harmonic trap

27th International Conference on Low Temperature Physics

Ustunel, Hande^1 ; Abedinpour, Saeed H.^2,3 ; Tanatar, B.^4

Department of Physics, Middle East Technical University, Dumlupinar Blv No: 1, Cankaya, Ankara

06800, Turkey^1

Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan

45137-66731, Iran^2

School of Physics, Institute for Research in Fundamental Sciences (IPM), Tehran

19395-5531, Iran^3

Department of Physics, Bilkent University, Bilkent, Ankara

06800, Turkey^4

关键词: Density profile;    Exchange correlations;    Harmonic trap;    Important features;    Interaction strength;    Key characteristics;    Particle densities;    Particle numbers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/568/1/012020/pdf
DOI  :  10.1088/1742-6596/568/1/012020

来源: IOP

【 摘 要 】

We investigate the behavior of polarized dipolar fermions in a two-dimensional harmonic trap in the framework of the density functional theory (DFT) formalism using the local density approximation. We treat only a few particles interacting moderately. Important results were deduced concerning key characteristics of the system such as total energy and particle density. Our results indicate that, at variance with Coulombic systems, the exchange- correlation component was found to provide a large contribution to the total energy for a large range of interaction strengths and particle numbers. In addition, the density profiles of the dipoles are shown to display important features around the origin that is not possible to capture by earlier, simpler treatments of such systems.