Stability of light positronic atoms: Quantum Monte Carlo studies

被引：26
|
作者：
Harju, A
Barbiellini, B
Nieminen, RM
机构：
[1] Laboratory of Physics, Helsinki University of Technology, Espoo
来源：
PHYSICAL REVIEW A | 1996年 / 54卷 / 06期
关键词：
D O I：
10.1103/PhysRevA.54.4849
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present accurate ground-state energies for the positronium atom in a Coulomb field of point charge Z (X(Z)Ps), for the positronium hydrogen (HPs) and positronium lithium (LiPs) atoms. Calculations are done using the diffusion quantum Monte Carlo (DQMC) method. For X(Z)Ps, the critical value of Z for binding is examined. While HPs is stable, the results show that LiPs is unstable against dissociation to a lithium atom and a positronium.
引用
收藏
页码：4849 / 4853
页数：5
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