77 citations · 129 across the 4 of their papers we have counts for
4 papers
Equivalence of the generalized and complex Kohn variational methods
J. N. Cooper, M. Plummer, E. A. G. Armour
For Kohn variational calculations on low energy positron hydrogen molecule elastic scattering, we prove that the phase shift approximation obtained using the complex Kohn method is…
The importance of an accurate target wave function in variational calculations for (e^{+}-H_{2}) scattering
J. N. Cooper, E. A. G. Armour, M. Plummer
Using the complex Kohn method, we have calculated variational values of phase shifts and the annihilation parameter, Z_{eff}, for the elastic scattering of positrons by molecular h…
Anomaly-free singularities in the generalized Kohn variational method
J. N. Cooper, E. A. G. Armour, M. Plummer
We have carried out an analysis of singularities in Kohn variational calculations for low energy e^{+}-H_{2} elastic scattering. Provided that a sufficiently accurate trial wavefun…
Stability of Few-Charge Systems in Quantum Mechanics
E. A. G. Armour, J. -M. Richard, K. Varga
We consider non-relativistic systems in quantum mechanics interacting through the Coulomb potential, and discuss the existence of bound states which are stable against spontaneous…