SEARCH Articles Figures Tables Coulomb Hamiltonian Dirac Breit Hamiltonian Dirac Hamiltonian Dirac-Coulomb Dirac-Coulomb Hamiltonian Dirac-Coulomb-Breit Hamiltonian/method Hamiltonian Coulomb+Breit No-pair Dirac-Coulomb-Breit Hamiltonian The Dirac-Coulomb-Breit Hamiltonian