Absorption Cross Section of Smeared D3-Brane on a Circle
Anastasios Psinas
Abstract
The evaluation of the absorption cross section of a massless scalar field propagating on a non-extremal black D3-brane smeared on a circle is considered. The solution to the scalar field equation of motion at high temperature is obtained in terms of the parameters λ=3ω/4πT and k, which denote the frequency and the momentum along the circle respectively while T denotes the temperature of the black brane. Based on a perturbative scheme, higher order temperature corrections to the scalar absorption cross section are computed. Further, interesting analogies with the cross section of known black branes solutions are discussed.
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