Positronium-hydrogen scattering using the stochastic variational method

Igor A. Ivanov, James Mitroy, Kalman Varga

    Research output: Contribution to journalComment/debate


    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.
    Original languageEnglish
    Pages (from-to)032703.1-032703.8
    Number of pages8
    JournalPhysical Review A (Atomic, Molecular and Optical Physics)
    Issue number3
    Publication statusPublished - 2002


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