Universality or nonuniversality of absorption cross-sections for extended objects
Aug, 2000Citations per year
Abstract:
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.Note:
- 10 pages, 2 figures
- 04.70.Dy
- 04.62.+v
- 11.25.-w
- field theory: scalar
- coupling: minimal
- cross section: absorption
- extended particle
- space-time
- wave function
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