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Positronium-hydrogen scattering using the stochastic variational method

Ivanov, Igor A., Mitroy, Jim and Varga, Kalman (2002). Positronium-hydrogen scattering using the stochastic variational method. Physical Review A (Atomic, Molecular and Optical Physics),65(3):032703.1-032703.8.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 19 times in Scopus Article | Citations

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Title Positronium-hydrogen scattering using the stochastic variational method
Author Ivanov, Igor A.
Mitroy, Jim
Varga, Kalman
Journal Name Physical Review A (Atomic, Molecular and Optical Physics)
Publication Date 2002
Volume Number 65
Issue Number 3
ISSN 1094-1622   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-0036509344
Start Page 032703.1
End Page 032703.8
Total Pages 8
Place of Publication College Park, United States
Publisher The American Physical Society
Field of Research 0202 - Atomic, Molecular, Nuclear, Particle and Plasma Physics
0204 - Condensed Matter Physics
0205 - Optical Physics
HERDC Category C1 - Journal Article (DEST)
Abstract The stochastic variational method (SVM) is used in conjunction with stabilization ideas in order to compute low-energy phase shifts. The method is tested by applying it to a simple model problem, and to s-wave positron-hydrogen scattering. The SVM is then applied to the calculation of the s- and p-wave phase shifts for Ps-H scattering. The scattering lengths obtained were 4.34a(0) for the electronic-spin-singlet state and 2.22a(0) for the triplet state. The present scattering lengths are probably accurate to +/-3% and are the most accurate that have so far been computed for the Ps-H systems.
Keywords close-coupling approximation
few-body problems
elastic-scattering
energies
model
DOI http://dx.doi.org/10.1103/PhysRevA.65.032703   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
Additional Notes Copyright by The American Physical Society


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