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S-Wave Scattering of Charged Fermions by a Magnetic Black Hole | | Mark Alford
; Andrew Strominger
; | | Date: |
21 Feb 1992 | | Journal: | Phys.Rev.Lett. 69 (1992) 563-566 | | Subject: | hep-th | | Abstract: | We argue that, classically, $s$-wave electrons incident on a magnetically charged black hole are swallowed with probability one: the reflection coefficient vanishes. However, quantum effects can lead to both electromagnetic and gravitational backscattering. We show that, for the case of extremal, magnetically charged, dilatonic black holes and a single flavor of low-energy charged particles, this backscattering is described by a perturbatively computable and unitary $S$-matrix, and that the Hawking radiation in these modes is suppressed near extremality. The interesting and much more difficult case of several flavors is also discussed. | | Source: | arXiv, hep-th/9202075 | | Services: | Forum | Review | PDF | Favorites | |
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