Abstract
A simple model for the study of London dispersion interactions is introduced: two spherical boxes, uniformly charged on their surfaces and each containing a freely moving charged particle. The model, also denominated as “interacting quantum balls” model, is applied to calculate the first three dispersion coefficients involving the ground and several excited s states, where dispersion interactions are the only contribution to the interaction energy. Already the first excited symmetric $$(1s{-}2s)_+$$ state has a negative $$C_6$$ dispersion coefficient, corresponding to long range repulsion. In general, a drastic state variation of the dispersion coefficients is observed, depending on the occurence of near-resonance excitation/disexcitation coupling.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
