Eikonal Type Approximations for Potential Scattering
نویسندگان
چکیده
منابع مشابه
Induced on-shell supersymmetry in eikonal scattering.
Generically coupled neutral scalar bosons and chiral fermions are shown, in the eikonal kinematical limit, to be described by a reduced (free field) theory with N = 1 on-shell supersymmetry. Charged scalars and spinors turn out to be described in the eikonal limit by a reduced interacting theory with a modified and restricted on-shell N = 1 supersymmetry. Consequences of such a symmetry for the...
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We study the problem of more general kinematics for the finite N M(atrix)-Model than the simple straight line motion that has been used before. This is supposed to be related to momentum transferring processes in the dual super-gravity description. We find a negative result for classical, perturbative processes and discuss briefly the possibility of instianton like quantum mechanical tunneling ...
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Approximating light charged point-like particles in terms of (nonextremal) dilatonic black holes is shown to lead to certain pathologies in Planckian scattering in the eikonal approximation, which are traced to the presence of a (naked) curvature singularity in the metric of these black holes. The existence of such pathologies is confirmed by analyzing the problem in an 'external metric' formul...
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Various approaches to high energy forward scattering in quantum gravity are compared using the eikonal approximation. The massless limit of the eikonal is shown to be equivalent to other approximations for the same process, speci cally the semiclassical calculation due to G. 't Hooft and the topological eld theory due to H. and E. Verlinde. This comparison clari es these previous results, as it...
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We discuss an approach to compute two-particle scattering amplitudes for spinless particles colliding at Planckian centre-of-mass energies, with increasing momentum transfer away from the eikonal limit. For electrically neutral particles, the amplitude exhibits poles on the imaginary squared cm energy axis at locations that are distinct from those appearing in the eikonal limit. For charged par...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1978
ISSN: 0033-068X,1347-4081
DOI: 10.1143/ptp.59.1956