Universality or Non--Universality of Absorption Cross Sections for Extended Objects

Details Universality or Non--Universality of Absorption Cross Sections for Extended Objects Universality or Non--Universality of Absorption Cross Sections for Extended Objects

2000-08-29

arxiv.org/abs/hep-th/0008215v1

Phys.Lett. B492 (2000) 135-139

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, 2 figures

Scientific paper

10.1016/S0370-2693(00)01077-7

The calculation of absorption cross sections for minimal scalars in supergravity backgrounds is an important aspect of the investigation of AdS/CFT correspondence and requires a matching of appropriate wave functions. The low energy case has attracted particular attention. In the following the dependence of the cross section on the matching point is investigated. It is shown that the low energy limit is independent of the matching point and hence exhibits universality. In the high energy limit the independence is not maintained, but the result is believed to possess the correct energy dependence.

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