Phys. Rev. A 71, 032514 (2005) [10 pages]Extended Hylleraas three-electron integralReceived 9 December 2004; published 30 March 2005 A closed-form expression for the three-electron Hylleraas integral involving the inverse quadratic power of one interparticle coordinate is obtained, and recursion relations are derived for positive powers of other coordinates. This result is suited for high-precision calculations of relativistic effects in lithium and light lithiumlike ions. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.71.032514
DOI:
10.1103/PhysRevA.71.032514
PACS:
31.15.Pf, 31.25.−v, 02.70.−c
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