Variational calculations of the ground state of positronium hydride (HPs) are reported, including various expectation values, electron-positron annihilation rates, and leading relativistic corrections to the total and dissociation energies. The calculations have been performed using a basis set of 4000 thoroughly optimized explicitly correlated Gaussian basis functions. The relative accuracy of the variational energy upper bound is estimated to be of the order of 2×10-10, which is a significant improvement over previous nonrelativistic results.
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|Publication status||Published - Jul 19 2011|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics