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Roy Glauber and Asymptotic Diffraction Theory

by Per Osland

This Submission thread is now published as

Submission summary

Authors (as registered SciPost users): Per Osland
Submission information
Preprint Link:  (pdf)
Date accepted: 2020-01-27
Date submitted: 2019-10-17 02:00
Submitted by: Osland, Per
Submitted to: SciPost Physics Proceedings
Proceedings issue: 24th European Few Body Conference (EFB2019)
Ontological classification
Academic field: Physics
  • High-Energy Physics - Phenomenology
  • Quantum Physics
Approach: Theoretical


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

Thanks for constructive comments.

List of changes

Minor rewordings in a few places. One reference (link) added.

Published as SciPost Phys. Proc. 3, 016 (2020)

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