2019/03/20 by Y. Zhang, M. -S. Wu, Zhang, Y. +13
Physics and Astronomy · #Atomic Physics (physics.atom-ph) #Atomic and Molecular Physics #Cold Atom Physics and Bose-Einstein Condensates #Crystallography and Radiation Phenomena #FOS: Physical sciences #physics.atom-ph
paper · pdf · doi:10.48550/arxiv.1903.08353
6 pages, 1 figure
openalex publication_date 2019/03/20 · openalex created_date 2019/06/27 · arxiv created 2022/06/11 · arxiv updated 2022/06/14 · openalex updated_date 2026/07/28
The confined variational method in conjunction with the orthogonalizing pseudo-potential method and the stabilization method is used to study the low energy elastic scattering between two spin-polarized metastable positronium Ps(2 3 S1) atoms. Explicitly correlated Gaussian basis functions are adopted to properly describe the complicated Coulomb interaction among the four charged particles. The calculated s-wave scattering length (≈8.5 a0) is positive, indicating the possibility of forming a stable Bose-Einstein condensate of fully spin-polarized Ps(2 3 S1) atoms. Our results will open a new way of experimental realization of Ps condensate and development of γ-ray and Ps(2 3 S1) atom lasers.