Universailty of Low Energy Absorption Cross-sections for Black Holes
Abstract
In this paper we compute the low energy absorption cross-section for minimally coupled massles scalars and spin-1/2 particles, into a general spherically symmetric black hole in arbitrary dimensions. The scalars have a cross section equal to the area of the black hole, while the spin-1/2 particles give the area measured in a flat spatial metric conformally related to the true metric.
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