Primordial black holes dark matter from inflection point models of inflation and the effects of reheating
نویسندگان
چکیده
منابع مشابه
Massive Primordial Black Holes in Hybrid Inflation
It is well known that energy density fluctuations at the early Universe give rise primordial black holes (BH) formation [1]. Widespread opinion is that these BHs are small enough with masses somewhere in the range MBH ∼ 10−5 − 10gram depending on specific model. What could be said about BHs with masses in the range 10 − 10gram? There exist a few number of inflationary models that predict BH pro...
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Microscopic black holes explode with their temperature varying inversely as their mass. Such explosions would lead to the highest temperatures in the present universe, all the way to the Planck energy. The possibility that a quasi-stationary shell of hot matter surrounds these black holes has recently been proposed and studied with relativistic Boltzmann transport equations and with relativisti...
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It is shown that in a number of scalar potentials with an unstable local maximum at the origin chaotic inflation is followed by new inflation if model parameters are appropriately chosen. In this model density fluctuation can have a large-amplitude peak on the comoving Hubble scale at the onset of the slow-roll new inflation and can result in formation of appreciable amount of primordial black ...
متن کاملBlack Holes as Dark Matter
While the energy of the universe has been established to be about 0.04 baryons, 0.24 dark matter and 0.72 dark energy, the cosmological entropy is almost entirely, about (1−10), from black holes and only 10 from everything else. This identification of all dark matter as black holes is natural in statistical mechanics. Cosmological history of dark matter is discussed. [email protected]
متن کاملFormation and Evolution of Primordial Black Holes After Hybrid Inflation
We examine the formation and evolution of primordial black holes (PBH’s) after hybrid inflation. Our goal is to assess the effects of various theoretical uncertainties on the extrapolation from a given inflation model to a spectrum of primordial black hole masses. The context of our work is an examination of the possibility[1, 2] that the dark matter is comprised of Planck-mass black hole remna...
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2020
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2020/01/037