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Elastic positronium-atom scattering using the stochastic variational method

Ivanov, Igor A., Mitroy, Jim and Varga, Kalman (2001). Elastic positronium-atom scattering using the stochastic variational method. Physical Review Letters,87(6):063201-1-063201-4.

Document type: Journal Article
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Title Elastic positronium-atom scattering using the stochastic variational method
Author Ivanov, Igor A.
Mitroy, Jim
Varga, Kalman
Journal Name Physical Review Letters
Publication Date 2001
Volume Number 87
Issue Number 6
ISSN 0031-9007   (check CDU catalogue open catalogue search in new window)
Start Page 063201-1
End Page 063201-4
Total Pages 4
Place of Publication College Park, Unites States
Publisher The American Physical Society
HERDC Category C1 - Journal Article (DEST)
Abstract The stochastic variational method is used in conjunction with stabilization ideas to compute the low energy phase shifts and scattering lengths for positronium-atom scattering. Results are obtained for the Ps-H, Ps-Li+, Ps-He, and Ps-Ps systems. The Ps-H scattering lengths are probably accurate to better than 5% and are the most accurate so far computed. The results for Ps-Li+ and Ps-Ps scattering represent the first published scattering lengths for these systems. The positive scattering length for completely spin-aligned (3)Ps-(3)Ps scattering, namely 2.95a(o), is particularly significant since it demonstrates the feasibility of forming a stable Bose-Einstein condensate of (3)Ps atoms.
Keywords few-body problems
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Additional Notes Copyright by the The American Physical Society

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