An analytic integral formula for spectral flow of unitaries is proved and used to give explicit counts of bound states in quantum scattering via Levinson's theorem.
K.,C ∗-algebras and their automorphism groups, London Mathematical Society Monographs, 14
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Analytic spectral flow formula for unitaries and Levinson's theorem
An analytic integral formula for spectral flow of unitaries is proved and used to give explicit counts of bound states in quantum scattering via Levinson's theorem.