THE LEVINSON THEOREM AND ITS GENERALIZATION IN RELATIVISTIC QUANTUM MECHANICS
- Received Date: 1978-08-08
- Accepted Date: 1900-01-01
- Available Online: 1979-08-05
Abstract: The Levinson Theorem in non-relativistic quantum mechanics is derived by Green function method which leads to the following expression:nl=1/π[δl(0)—δl(∞)]—((—1)l)/2 sin2δl(0)Then its generalization in Dirae equation is fuond as:nk(+)—nk-=1/π[δk(m)—δk(∞)+δk(—∞)—δk(—m)]—(k/(|k|))((—1)x/2)[sin2δk(m)+sin2δk(—m)].对于 Klein-Gordon There are two expressions for Klein-Gordon equation:nl(+)±nl-=1/π{δl(m)—δl(∞)±[δl(—m)—δl(—∞)]}—((—1)l/2)[sin2δl(m)±sin2δl(—m)].The implication of these theorems and the range of their validity with relevantproblems are discussed.An example of S state ease in square well potential is trea-ted for testing these formulas.