Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2006-11-10
JHEP0707:003,2007
Physics
High Energy Physics
High Energy Physics - Theory
13 pages; v2 errors in the absorption cross section formulas corrected, few typos corrected, improved discussion regarding our
Scientific paper
10.1088/1126-6708/2007/07/003
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 $\lambda=3\omega/4\pi T$ 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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