Publications of The Korean Astronomical Society (천문학논총)

The Korean Astronomical Society (한국천문학회)
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PRIMORDIAL BLACK HOLES IN THE VERY EARLY UNIVERSE

  • Hwang, C.O. (Department of Astronomy, Seoul National University) ;
  • Hyun, J.J. (Department of Astronomy, Seoul National University)
  • Published : 1991.12.31
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Abstract

Energy density evolution of primordial black holes(PBHs) due to quantum gravitational tunneling effect in the very early Universe is calculated for the four cases of GUTs(grand unified theories) (SM, SUSY SM, SUSY SU(5), SU(5)). For the three of them (SM, SUSY SM, SUSY SU(5)), it is confirmed that there are a considerable amount of PBHs and so it may give a firm support to Lindley's paper(1981) in which he tried to solve the baryon asymmetry problem. It is shown that the formation of PBHs increases the cosmic scale factor R and decreases the total energy density $\rho_t$ faster than in the usual radiation dominated era.

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