Eikonal quantum gravity and planckian scattering
نویسندگان
چکیده
منابع مشابه
Eikonal Quantum Gravity and Planckian Scattering*
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...
متن کاملPlanckian Scattering from Kerr Black Holes: Eikonal and Beyond
Planckian scattering of particles with angular momenta is studied by describing them as sources of Kerr metric. In the shock wave formalism, it is found that the angular momenta do not contribute to the scattering amplitude in the eikonal limit. This is confirmed by using the wave equation of the test particle in the Kerr background. Typeset using REVTEX E-Mail: saurya,[email protected] 1
متن کاملPlanckian Scattering Beyond the Eikonal Approximation in the Functional Approach
In the framework of functional integration the non-leading terms to leading eikonal behavior of the Planckian-energy scattering amplitude are calculated by the straight-line path approximation. We show that the allowance for the first-order correction terms leads to the appearance of retardation effect. The singular character of the correction terms at short distances is also noted, and they ma...
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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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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1992
ISSN: 0550-3213
DOI: 10.1016/0550-3213(92)90627-n