W. Zimdahl et D. Pavon, COSMIC EVOLUTION DURING PRIMORDIAL BLACK-HOLE EVAPORATION - ART. NO. 103506, Physical review. D. Particles and fields, 5810(10), 1998, pp. 3506
Primordial black holes with a narrow mass range are regarded as a nonr
elativistic fluid component with an equation of state for dust. The im
pact of the black hole evaporation on the dynamics of the early univer
se is studied by resorting to a two-fluid model. We find periods of in
tense radiation reheating in the initial and final stages of the evapo
ration. [S0556-2821(98)11220-1].