The existence of four-body molecules is intensively investigated using the Rayleigh-Ritz variational method within the framework of the theory of four-body systems. Special attention is devoted to the optimization of the nonlinear parameters included in the wavefunctions describing the molecular structures considered. It is shown that the theory is verified and all predicted properties of the molecules are satisfied. The optimized wavefunctions are employed for calculating the binding energies and internal distances of these molecules. The results are considered (particularly for Ps2) as an improvement upon preceding results obtained by other authors.
|Number of pages||19|
|Journal||Journal of Physics B: Atomic, Molecular and Optical Physics|
|Publication status||Published - May 14 1998|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics