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.
|Number of pages||6|
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|Early online date||03 Jul 2013|
|Publication status||Published - 15 Jul 2013|