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Roy Glauber and Asymptotic Diffraction Theory
by Per Osland
|As Contributors:||Per Osland|
|Submitted by:||Osland, Per|
|Submitted to:||SciPost Physics Proceedings|
|Proceedings issue:||24th European Few Body Conference (University of Surrey, U.K.)|
|Subject area:||Quantum Physics|
This is a review of Glauber's asymptotic diffraction theory, in which diffractive scattering is described in terms of interference between semiclassical amplitudes, resulting from a stationary-phase approximation. Typically two such amplitudes are sufficient to accurately describe elastic scattering, but the stationary points are located at complex values of the impact parameter. Their separation controls the interference pattern, and their offsets from the real axis determine the overall fall-off with momentum transfer. Asymptotically, at large momentum transfers, the stationary points move towards singularities of the profile function. I also include some reminiscences from our collaboration.
Author comments upon resubmission
List of changes
Minor rewordings in a few places. One reference (link) added.