Phys. Rev. A 56, 1938–1944 (1997)Levinson theorem in two dimensionsReceived 11 March 1997; published in the issue dated September 1997 A two-dimensional analog of Levinson’s theorem for nonrelativistic quantum mechanics is established, which relates the phase shift at threshold (zero momentum) for the mth partial wave to the total number of bound states with angular momentum mħ (m=0,1,2,…) in an attractive central field. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.56.1938
DOI:
10.1103/PhysRevA.56.1938
PACS:
34.10.+x, 34.90.+q, 03.65.-w
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