The variational method complemented with the use of explicitly correlated Gaussian basis
functions is one of the most powerful approaches currently used for calculating the …

This article presents an overview of current understanding of the interaction of low-energy
positrons with molecules with emphasis on resonances, positron attachment, and …

The positron, as the antiparticle of the electron, can form metastable states with atoms and
molecules before its annihilation with an electron. Such metastable matter–positron …

Positron annihilation on many molecular species occurs via capture into vibrational
Feshbach resonances. The study of the downshifts in the energy of these resonances from …

A model-potential approach to calculating positron-molecule binding energies and
annihilation rates is developed. Unlike existing ab initio calculations, which have mostly …

B. The Dipole Approximation C. Transformation to Center-of-Mass Coordinates III.
Permutational Symmetry A. Projection onto the Irreducible Representations of the nth-Order …

Quantum Monte Carlo methods are used to investigate the binding of a positron to the
hydrogen cyanide (HCN) and lithium hydride (LiH) molecules. Our value of the adiabatic …

A model-potential approach has been developed to study positron interactions with
molecules. Binding energies and annihilation rates are calculated for positron bound states …

Ab initio multireference single-and double-excitation configuration interaction (MRD-CI)
calculations are carried out to study the interactions of positrons with the members of the …

Very accurate non-Born–Oppenheimer variational calculations of the ground state of e LiH
have been performed using explicitly correlated Gaussian functions with preexponential …