Levinson theorem in two-dimensions

1997
19 pages
Published in:
  • Phys.Rev.A 56 (1997) 1938-1944
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Abstract:
A two-dimensional analogue of Levinson's theorem for nonrelativistic quantum mechanics is established, which relates the phase shift at threshold(zero momentum) for the mmth partial wave to the total number of bound states with angular momentum m(m=0,1,2,...)m\hbar(m=0,1,2,...) in an attractive central field.
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