氦二聚体相互作用能的相对论修正。

Relativistic correction to the helium dimer interaction energy.

作者信息

Cencek Wojciech, Komasa Jacek, Pachucki Krzysztof, Szalewicz Krzysztof

机构信息

Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA.

出版信息

Phys Rev Lett. 2005 Dec 2;95(23):233004. doi: 10.1103/PhysRevLett.95.233004. Epub 2005 Dec 1.

DOI:10.1103/PhysRevLett.95.233004

PMID:16384305

Abstract

The lowest-order relativistic correction to the helium-helium interaction energy has been calculated for the first time, using two independent methods based on expansions in explicitly correlated Gaussian functions. At the equilibrium interatomic distance of 5.6 bohr, this correction amounts to +15.4 +/- 0.6 mK. As a by-product, a new upper bound of -10.9985 K for the nonrelativistic Born-Oppenheimer interaction energy has been obtained.

摘要

首次使用基于显式相关高斯函数展开的两种独立方法，计算了氦 - 氦相互作用能的最低阶相对论修正。在5.6玻尔的平衡原子间距下，此修正量为 +15.4±0.6 毫开尔文。作为附带结果，获得了非相对论玻恩 - 奥本海默相互作用能的新上限 -10.9985 K。