Dense spectrum of resonances and spin-1/2 particle capture in a near-black-hole metric

G. H. Gossel, J. C. Berengut, V. V. Flambaum, G. F. Gribakin

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Abstract

We show that a spin-1/2 particle in the gravitational field of a massive body of radius R which slightly exceeds the Schwarzschild radius rs, possesses a dense spectrum of narrow resonances. Their lifetimes and density tend to infinity in the limit R → rs. We determine the cross section of the particle capture into these resonances and show that it is equal to the spin-1/2 absorption cross section for a Schwarzschild black hole. Thus black-hole properties may emerge in a non-singular static metric prior to the formation of a black hole.
Original languageEnglish
Article number027501
Number of pages6
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume88
Issue number2
Early online date03 Jul 2013
DOIs
Publication statusPublished - 15 Jul 2013

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