Girotto Matheus, dos Santos Alexandre P, Colla Thiago, Levin Yan
Instituto de Física, Universidade Federal do Rio Grande do Sul, Caixa Postal 15051, CEP 91501-970, Porto Alegre, RS, Brazil.
Departamento de Educação e Informação em Saúde, Universidade Federal de Ciências da Saúde de Porto Alegre, 90050-170, Porto Alegre, RS, Brazil.
J Chem Phys. 2014 Jul 7;141(1):014106. doi: 10.1063/1.4885723.
We study the density distribution of repulsive Yukawa particles confined by an external potential. In the weak coupling limit, we show that the mean-field theory is able to accurately account for the particle distribution. In the strong coupling limit, the correlations between the particles become important and the mean-field theory fails. For strongly correlated systems, we construct a density functional theory which provides an excellent description of the particle distribution, without any adjustable parameters.
我们研究了受外部势约束的排斥性汤川粒子的密度分布。在弱耦合极限下，我们表明平均场理论能够准确地描述粒子分布。在强耦合极限下，粒子之间的相关性变得重要，平均场理论失效。对于强关联系统，我们构建了一种密度泛函理论，该理论无需任何可调参数就能出色地描述粒子分布。
