TTP96-16 Hyperfine interactions between electrons

TTP96-16 Hyperfine interactions between electrons

TTP96-16 Hyperfine interactions between electrons

The relativistic Breit Hamiltonian between electrons is transformed into an effective vector potential ${\bf A}_i$ for the $i.$th electron, ${\bf A}_i$ having the structure of a recoil–corrected hyperfine operator.

Apart from a small three--body operator, the Dirac--Breit equation
R. H\“ackl, H. Pilkuhn
J. Phys. B 29 (1996) L725
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