A new approach to the eigenvalue problem in quantum mechanics is proposed. This
approach is based on three propositions: 1) a perturbation theory which does not require …

In this book we summarize the essential results of our efforts over the years to calculate
energies, wave functions, and electromagnetic transitions of atoms as functions of the …

The energy values of many low-lying states of the one-electron problem in the presence of a
homogeneous magnetic field of arbitrary strength (0< B< or= 4.7* 10 8 T) are calculated with …

We establish a basis set of atomic orbitals suitable to describe molecular wave functions at
arbitrary magnetic field strengths and for an arbitrary orientation of the molecule relative to …

We present the finite-element method in its application to solving quantum-mechanical
problems for diatomic molecules. Results for Hartree-Fock calculations of H 2 and Hartree …

We investigate the performance of an adiabatic separation of electronic and nuclear motion
in the presence of a magnetic field and find that the diagonal term of the nonadiabatic …

By using the variational Monte Carlo (VMC) method, we calculated the 1 s σ g-state
energies, the dissociation energies, and the binding energies of the hydrogen molecule and …

A new method is developed for solving the quantum mechanical problem of scattering of a
particle with internal structure. The multichannel scattering problem is formulated as a …

Energies of the bound states of the hydrogen atom in a uniform magnetic field are calculated
for field strengths greater or equal to B 0≈ 2.35× 10 9 G. The convergent behavior of the …

A large number of magnetically dressed states of the hydrogen molecular ion for parallel
internuclear and magnetic field axes are investigated. The numerical calculations of the …