SEARCH Articles Figures Tables Adiabatic approximation anharmonic Hamiltonian Born-Oppenheimer approximation Hamiltonian Born-Oppenheimer approximation electronic Hamiltonian Born-Oppenheimer approximation vibration-rotation Hamiltonians Crude Born-Oppenheimer approximation hydrogen molecule, Hamiltonian Diagonal local approximation Hamiltonian Effective Hamiltonian Born-Oppenheimer approximation Hamiltonian Hartree-Fock approximation Hamiltonian Zeroth-order regular approximation Hamiltonian approximate Hamiltonian equation dipole approximation Hamiltonian equations approximation Hamiltonian infinite-order regular approximation Hamiltonian introduced approximations Hamiltonian model, approximations Hamiltonian modes approximations Hamiltonian operator solid-state approximation Hamiltonian rotating-wave approximation Hamiltonians zeroth-order regular approximation Hartree-Fock approximation zeroth-order Hamiltonian Many-particle Hamiltonian Born-Oppenheimer approximation Model Hamiltonian in the Kirkwood Approximation Model Hamiltonians in the Macroscopic Approximation Spin approximate Hamiltonians Symmetry of the One-electron Approximation Hamiltonian Theoretical methods Hamiltonian approximation Transformed Hamiltonian introduced approximations Zeroth-order regular approximation Hamiltonian/method