The short-time Green function Monte Carlo method is used to calculate the ground-state energies of the three-body systems e–2 e+, e–2µ+, H–(e–2 p+) and H–(∞). In each case high accuracy is attained by employing a carefully optimised trial wavefunction and by using an extrapolation technique to correct for the short-time approximation.
R. G. J. Ball and B. H. Wells, J. Chem. Soc., Faraday Trans., 1990, 86, 43 DOI: 10.1039/FT9908600043
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