Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985svphu.145..369p&link_type=abstract
(Uspekhi Fizicheskikh Nauk, vol. 145, Mar. 1985, p. 369-401) Soviet Physics - Uspekhi (ISSN 0038-5670), vol. 28, March 1985, p.
Astronomy and Astrophysics
Astronomy
1
Black Holes (Astronomy), Cosmic Dust, Elementary Particles, Particle Mass, Quantum Theory, Universe, Astronomical Models, Fermions, Magnetic Monopoles, Statistical Analysis, Unified Field Theory
Scientific paper
Analysis of astrophysical restrictions on the spectrum of primordial black holes (PBH) permits indirect information about physical conditions in the very early universe to be obtained. Here, a scenario for the evolution of the early universe is considered in which, during early stages of the expansion, there existed supermassive particles whose residual concentration was fairly high, so that, having become nonrelativistic, they began to dominate the early universe. Thus, the universe could have entered an early dust phase of expansion. The minimal probability of PBH production is specified from the spectrum of initial inhomogeneities, and this minimal probability is compared with the observed astrophysical upper bounds on the PBH spectrum, leading to a number of nontrivial restrictions on the properties of the supermassive metastable particles corresponding to the choices for the initial perturbation spectrum. It is shown that it is possible to restrict the parameters of definite variants of unified gauge theories.
Khlopov Iu. M.
Polnarev Alexander G.
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