Geodesic
Lower bound for forward scattering amplitude
Teoretičeskaâ i matematičeskaâ fizika, Tome 24 (1975) no. 1, pp. 141-144 
Yu. S. Vernov; M. N. Mnatsakanova. Lower bound for forward scattering amplitude. Teoretičeskaâ i matematičeskaâ fizika, Tome 24 (1975) no. 1, pp. 141-144. http://geodesic.mathdoc.fr/item/TMF_1975_24_1_a17/
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Voir la notice de l'article provenant de la source Math-Net.Ru

In the well-known expression for the lower bound of the forward scattering amplitude $\max\limits_{E\to\infty}|f(E)|>C/E^2$ the expression for the constant $C$ is found. A similar bound is obtained for finite energies.

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