Regular and singular integrals for relativistic and QED matrix elements of the Coulomb threebody problem, for an exponential basis set
Abstract
A general scheme is given for evaluating various matrix elements related to relativistic and QED corrections for the Schrödinger Hamiltonian within a variational approach. The nonrelativistic wavefunction is expanded using an exponential basis set of the Slater type for states of arbitrary angular momentum, where the rotational symmetry is expanded in terms of bipolar harmonics. Special emphasis is placed on numerical implementation of the algorithms described.
 Publication:

Journal of Physics B Atomic Molecular Physics
 Pub Date:
 April 2002
 DOI:
 10.1088/09534075/35/8/312
 Bibcode:
 2002JPhB...35.1959K