Sabine Hossenfelder, Leonardo Modesto, Isabeau Prémont-Schwarz
We calculate the particle spectra of evaporating self-dual black holes that
are potential dark matter candidates. We first estimate the relevant mass and
temperature range and find that the masses are below the Planck mass, and the
temperature of the black holes is small compared to their mass. In this limit,
we then derive the number-density of the primary emission particles, and, by
studying the wave-equation of a scalar field in the background metric of the
black hole, show that we can use the low energy approximation for the greybody
factors. We finally arrive at the expression for the spectrum of secondary
particle emission from a dark matter halo constituted of self-dual black holes.
View original:
http://arxiv.org/abs/1202.0412
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