Phys. Rev. C 70, 034006 (2004) [4 pages]Accurate evaluation of pionium wave functionsReceived 18 March 2004; published 28 September 2004 A suitable numerical approach based on Sturmian functions is employed to solve the pionium problem for both local and nonlocal potentials. The approach accounts for both the short-ranged strong interaction and the long-ranged Coulomb force and provides accurately the wave function and binding energy of pionium. It is found that the ground-state pionium wave function in realistic pion-pion strong interactions might be considerably different from the hydrogen-like one at a small distance. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.70.034006
DOI:
10.1103/PhysRevC.70.034006
PACS:
13.75.Lb, 36.10.Gv
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