Crispino, LCBHiguchi, A.Matsas, GEA2014-05-202014-05-202001-06-15Physical Review D. College Pk: American Physical Soc, v. 63, n. 12, 14 p., 2001.0556-2821http://hdl.handle.net/11449/23226We discuss the Gupta-Bleuler quantization of the free electromagnetic field outside static black holes in the Boulware vacuum. We use a gauge which reduces to the Feynman gauge in Minkowski spacetime. We also discuss its relation with gauges used previously. Then we apply the low-energy sector of this held theory to investigate some low-energy phenomena. First, we discuss the response rate of a static charge outside the Schwarzschild black hole in four dimensions. Next, motivated by string physics, we compute the absorption cross sections of low-energy plane waves for the Schwarzschild and extreme Reissner-Nordstrom black holes in arbitrary dimensions higher than three.14engArtigo10.1103/PhysRevD.63.124008WOS:000169288400028Acesso abertoWOS000169288400028.pdf8525680767393616