The binding of positrons to molecules is necessary to optimize positron annihilation reactions and for positron-based molecular spectroscopy assays. Although previous studies were able to measure energy levels in positron-bonding interactions with 90 molecules, an accurate theoretical description that explains the process of positron-molecular bonding from the start is not available yet. Among the experiments studied, the number of molecules for which calculations of the energy of these bonding interactions are available from the start is only six. The results of these calculations are consistent with experiments conducted on polar molecules with an accuracy of 25% at best. It fails to predict the outcome of binding interactions in nonpolar molecules. The theoretical challenge in this context arises from the need to accurately characterize the strong bonding interactions in multiparticle systems, such as the polarization of electron clouds, the inhibition of the Coulomb interaction between electrons and positrons, and the unique mechanism by which a temporary positronium is formed (in which an electron of a molecule transiently passes through
In this published paper, the research team developed a theory to describe the interactions between positrons and molecules in multiparticle systems. This theory fully agrees with the results of experiments in this regard (the deviation from the results does not exceed 1%), and it predicts the interactions of annihilation reactions with molecules and condensed matter, to reach a deep understanding and basic predictive ability to improve identification of problems in materials science, and the development of techniques based on Antimatter (such as positron traps, beams, and positron-emission tomography), and understanding positrons in our galaxy.