Fock-Tani Hamiltonian for reactions involving two-electron atoms

Meson decay in the Fock-Tani Formalism

The Fock-Tani formalism is a first principle method to obtain effective interactions from microscopic Hamiltonians. Usually this formalism was applied to scattering, here we introduced it to calculate partial decay widths for mesons.

Use of the Fock expansion for 1S-state wave functions of two-electron atoms and ions.

Regular perturbation theory for two-electron atoms

Article history: Received 23 March 2011 Received in revised form 13 May 2011 Accepted 16 May 2011 Available online 25 May 2011 Communicated by P.R. Holland

Dynamics of Entanglement for Two-Electron Atoms

Abstract We studied the dynamics of the entanglement for two electron atoms as a ”bipartite” quantum system with continuous degrees of freedom. We analyze in particular the time evolution of initial states created from a superposition of the eigenstates of the two-electron Hamiltonian with variable nuclear charge Z. We find that the pairwise entanglement for the two electrons propagate in a way...

Chemi-ionization reactions involving metastable helium atoms at high energy

Total chemi-ionization cross-sections have been measured over the 15 to 1 500 eV energy interval for collisions of He 2 1S and 2 3S metastable atoms with Ne, H2, N2, O2 and CO, using a slow ion measurement technique. With molecular targets these measurements have shown a strong energy dependence for the total ionization cross-section without dissociation. In the case of dissociative ionization ...