High-density expansion of correlation energy and its extrapolation to the metallic density region

被引:25
|
作者
Endo, T [1 ]
Horiuchi, M
Takada, Y
Yasuhara, H
机构
[1] Tohoku Univ, Grad Sch Sci, Dept Phys, Sendai, Miyagi 9808578, Japan
[2] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 1068666, Japan
来源
PHYSICAL REVIEW B | 1999年 / 59卷 / 11期
关键词
D O I
10.1103/PhysRevB.59.7367
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The r(s) expansion of the correlation energy per electron for an electron liquid is completed exactly up to order r(s) in units of Rydberg. A simple but accurate fitting formula for the correlation energy, which is a smooth extrapolation of the r(s) expansion to the region of metallic densities is presented. [S0163-1829(99)07911-4].
引用
收藏
页码:7367 / 7372
页数:6
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