2011/12/09 by Paolo Amore, Amore, Paolo, Francisco M. Fernández +1
Physics and Astronomy · #Chemical Physics (physics.chem-ph) #FOS: Physical sciences #Quantum Physics (quant-ph) #physics.chem-ph #quant-ph
paper · pdf · doi:10.48550/arxiv.1112.2561
arxiv created 2012/12/24 · arxiv updated 2012/12/27
We analyse a nonadiabatic self-consistent field method by means of an exactly-solvable model. The method is based on nuclear and electronic orbitals that are functions of the cartesian coordinates in the laboratory-fixed frame. The kinetic energy of the center of mass is subtracted from the molecular Hamiltonian operator in the variational process. The results for the simple model are remarkably accurate and show that the integration over the redundant cartesian coordinates leads to couplings among the internal ones.