Differential Equations for Half-Off-Shell Matrix Elements
- 1 December 1968
- journal article
- conference paper
- Published by AIP Publishing in Journal of Mathematical Physics
- Vol. 9 (12) , 2132-2137
- https://doi.org/10.1063/1.1664554
Abstract
A first‐order differential equation is found for the quasiphase parameter which describes the half‐off‐shell scattering matrix. The quasiphase is given as Δ(∞), where Δ(r) obeys an equation involving the potential but not the wavefunction and Δ(0) = 0. The equation is used to develop low‐momentum expansions for Δ, and to derive upper and lower bounds for the expansion parameters.Keywords
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