Description of positron-hydrogen resonances using the stochastic variational method

被引：20
|
作者：
Varga, K. [1 ]
Mitroy, J. [2 ]
Mezei, J. Zs. [3 ]
Kruppa, A. T. [3 ]
机构：
[1] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA
[2] Charles Darwin Univ, Fac Technol, ARC Ctr Antimatter Studies, Darwin, NT 0909, Australia
[3] Inst Nucl Res, H-4026 Debrecen, Hungary
来源：
PHYSICAL REVIEW A | 2008年 / 77卷 / 04期
关键词：
D O I：
10.1103/PhysRevA.77.044502
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The complex scaling method combined with the stochastic variational approach has been used to calculate the energy and widths of a number of L=0 resonant states of the positron-hydrogen system. The interparticle correlation functions reveal evidence of cluster formation in the resonance state. The lowest L=0 resonance associated with the H(n=2) threshold shows a bulge in the e(-)-e(+) correlation function located at the same distance as the probability maximum of the Ps(1s) state.
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页数：4
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