Levinson's Theorem
in nonrelativistic quantum scattering, a theorem relating the number of bound states of a potential to the phase shift of a scattered wave at energies 0 and ∞
en-US/ˈlɛvɪnsənz ˈθɪɹəm/
en-GB/lɛvɪnsʌnz ˈθɪəɹəm/
in nonrelativistic quantum scattering, a theorem relating the number of bound states of a potential to the phase shift of a scattered wave at energies 0 and ∞