- Nobuo Sato (UConn)
- Andrea Signori (Jefferson Lab)
Ted Rogers (ODU/JLab)
Prof. Leonard Gamberg (Penn State Berks)
Prof. Paul Hoyer (University of Helsinki)
A perturbative expansion for bound states starts with a lowest order approximation that has a non-perturbative wave function, with all powers in the coupling $\alpha$. The distinction between lowest and higher orders is blurred since contributions of finite order in $\alpha$ may be assigned to either one. A criterion beyond powers of $\alpha$ is needed to fully define a perturbative expansion...
Nobuo Sato (UConn)
Dr Hrayr Matevosyan (CSSM, University of Adelaide)