Two-dimensional electron gas: correlation energy versus density and spin polarization
Strongly Correlated Electrons
2007-05-23 v2
Abstract
We propose a simple analytic representation of the correlation energy for the two-dimensional electron gas, as a function of the density and the spin polarization. This new parametrization includes most of the known high- and low- density limits and fits our new fixed-node diffusion Monte Carlo simulations, performed for a wide range of electron densities and spin-polarization states. In this way we provide a reliable local-spin-density energy functional for two-dimensional systems. The corresponding correlation potential is discussed and compared with previous models.
Cite
@article{arxiv.cond-mat/0110444,
title = {Two-dimensional electron gas: correlation energy versus density and spin polarization},
author = {Paola Gori-Giorgi and Claudio Attaccalite and Saverio Moroni and Giovanni B. Bachelet},
journal= {arXiv preprint arXiv:cond-mat/0110444},
year = {2007}
}
Comments
minor typos corrected, see also cond-mat/0109492