Analytic Continuation of the Off-Energy-Shell Scattering Amplitude

Journal of Mathematical Physics - Tập 8 Số 4 - Trang 873-877 - 1967
J. Nuttall1
1Department of Physics, Texas A & M University, College Station, Texas

Tóm tắt

It is shown that the two-body scattering amplitude 〈k| T(E) |k′〉 may be analytically continued in E through the physical cut into a region of meromorphy, provided that the potential satisfies certain requirements. The residue at a pole is a separable operator whose form agrees with previous work. The proof also demonstrates the existence of a region of meromorphy of 〈k| T(E) |k′〉 as a function of seven complex variables.

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