1305.4209 (G. H. Gossel et al.)

Dense spectrum of resonances and spin-1/2 particle capture in
anear-black-hole metric    [PDF]

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

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 r_s, possesses a dense spectrum of narrow resonances. Their lifetimes and density tend to infinity in the limit R -> r_s. 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.

View original: http://arxiv.org/abs/1305.4209