2000/10/25 by Massimo Mella, Dario Bressanini, Gabriele Morosi · 2 citations
Engineering · Physics and Astronomy · #Advanced Chemical Physics Studies #Atomic and Molecular Physics #Muon and positron interactions and applications #physics.atom-ph
paper · pdf · doi:10.1103/physreva.63.024503
10 pages, 1 figure, submitted to Phys. Rev. A
arxiv created 2000/10/25 · openalex publication_date 2001/01/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The first three dynamic multipole polarizabilities for the ground state of hydrogen, helium, hydride ion, and positronium hydride PsH have been computed using the variational Monte Carlo (VMC) method and explicitly correlated wave functions. Results for the static dipole polarizability by means of the diffusion Monte Carlo method and the finite field approach show the VMC results to be quite accurate. From these dynamic polarizabilities van der Waals dispersion coefficients for the interaction of PsH with ordinary electronic systems can be computed, allowing one to predict the dispersion energy for the interaction between PsH and less exotic atoms and molecules.