------------------------------------------- S9e. QED and relativistic quantum chemistry ------------------------------------------- Relativistic quantum chemistry is needed to predict properties of heavy atoms. This is usually done by invoking the Dirac-Fock Hamiltonian, which is an approximation of the QED Hamiltonian for which the multiparticle bound state problem is tractable. Here are a few samples of what can be done: The first is explicitly time-dependent; the second is about bound states calculations; the third shows how to add further QED corrections; The fourth shows how the Dirac-Fock Hamiltonian arises as approximation of QED. The last gives a discussion of some mathematical problems involved. Fink+Johnson Electron correlations and spin-orbit interaction in two-photon ionization of closed-shell atoms: A relativistic time-dependent Dirac-Fock approach Phys. Rev. A 42, 3801-3818 (1990) Bieron et al. Large-scale multiconfigurational Dirac-Fock calculations of the hyperfine-structure constants and determination of the nuclear quadrupole moment of 49Ti Phys. Rev. A 59, 4295-4299 (1999) Indelicato+Desclaux Multiconfiguration Dirac-Fock calculations of transition energies with QED corrections in three-electron ions Phys. Rev. A 42, 5139-5149 (1990) P Chaix and D Iracane From quantum electrodynamics to mean-field theory. I. The Bogoliubov-Dirac-Fock formalism J. Phys. B: At. Mol. Opt. Phys. 22 (1989) 3791-3814 M Defranceschi and C Le Bris Computing a molecule in its environment: A mathematical viewpoint Int J Quantum Chemistry 71 (1999) 227-250