Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2010-03-17
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
6 pages latex. Talk at Strong Coupled Gauge Theories in the LHC Era, December 8-11, 2009. Nagoya, Japan.
Scientific paper
The dimensionless entropy, ${\cal S} \equiv S/k$, of the visible universe, taken as a sphere of radius 50 billion light years with the Earth at its "center", is discussed. An upper limit ($10^{112}$), and a lower limit ($10^{102}$), for ${\cal S}$ are introduced. It is suggested that intermediate-mass black holes (IMBHs) constitute all dark matter, and that they dominate ${\cal S}$.
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