منابع مشابه
Validity of the Eikonal Approximation*
We summarize results on the reliability of the eikonal approximation in obtaining the high energy behavior of a two particle forward scattering amplitude. Reliability depends on the spin of the exchanged field. For scalar fields the eikonal fails at eighth order in perturbation theory, when it misses the leading behavior of the exchange-type diagrams. In a vector theory the eikonal gets the exc...
متن کاملDeviations from the eikonal approximation
J. A. Tostevin, D. Bazin, B. A. Brown, T. Glasmacher, P. G. Hansen, V. Maddalena, A. Navin,* and B. M. Sherrill Department of Physics, School of Physics and Chemistry, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 Department of Physics and Astronomy, Michigan State University...
متن کاملOn the Eikonal Approximation in AdS Space
We explore the eikonal approximation to graviton exchange in AdS5 space, as relevant to scattering in gauge theories. We restrict ourselves to the regime where conformal invariance of the dual gauge theory holds, and to large ’t Hooft coupling where the computation involves pure gravity. We give a heuristic argument, a direct loop computation, and a shock wave derivation. The scalar propagator ...
متن کاملGeneralized Eikonal Knots and New Integrable Dynamical Systems
A new class of non-linear O(3) models is introduced. It is shown that these systems lead to integrable submodels if an additional integrability condition (so called the generalized eikonal equation) is imposed. In the case of particular members of the family of the models the exact solutions describing toroidal solitons with a non-trivial value of the Hopf index are obtained. Moreover, the gene...
متن کاملHigh-energy quark-quark scattering and the eikonal approximation
The high–energy quark–quark scattering amplitude is calculated first in the case of scalar QCD, using Fradkin’s approach to derive the scalar quark propagator in an external gluon field and computing it in the eikonal approximation. The results are then extended to the case of “real” (i.e., fermion) QCD. The high–energy quark–quark scattering amplitude turns out to be described by the expectati...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2020
ISSN: 2469-9985,2469-9993
DOI: 10.1103/physrevc.101.054609