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Analogy between scales involved in D-particle scattering and the hydrogen atom. After [103].
| Electron | D-particle |
|---|---|
| mass me | mass m0 = 1/(lsgs) |
| Compton wavelength 1/me | Compton wavelength 1/m0 ∼ gsls |
| velocity α | velocity 
|
| Bohr radius ∼ 1/(αme) | size of resonance 
|
| energy levels ∼ α2me | resonance energy 
|
| fine structure ∼ α4me | energy shifts 
|
