“…Primordial black holes (PBH) have been shown to arise from high peaks in the matter power spectra of multi-field models of inflation. …”
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“…We argue that in a system with a holographic dual these states have a natural interpretation as an AdS black hole with transient excitations behind the horizon. …”
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“…It has recently been proposed that massive primordial black holes (PBH) could constitute all of the dark matter, providing a novel scenario of structure formation, with early reionization and a rapid growth of the massive black holes at the center of galaxies and dark matter halos. …”
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“…General Relativity: An Introduction to Black Holes, Gravitational Waves, and Cosmology also connects general relativity with broader topics. …”
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“…We discuss time-dependent perturbations (induced by matter fields) of a black-hole background in tree-level two-dimensional string theory. …”
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“…The purpose of this paper is to analyse, in the light of information theory and with the arsenal of (elementary) quantum mechanics (EPR correlations, copying machines, teleportation, mixing produced in sub-systems owing to a trace operation, etc.) the scenarios available on the market to resolve the so-called black-hole information paradox. We shall conclude that the only plausible ones are those where either the unitary evolution of quantum mechanics is given up, in which information leaks continuously in the course of black-hole evaporation through non-local processes, or those in which the world is polluted by an infinite number of meta-stable remnants.…”
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“…The abundance of primordial black holes (PBHs) in the mass range 0.1–103 M⊙ can potentially be tested by gravitational wave observations due to the large merger rate of PBH binaries formed in the early universe. …”
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“…Gravitational waves also carry information about the nature of black holes. Here we investigate the potential of gravitational-wave detectors to test a proposal by Bekenstein and Mukhanov that the area of black hole horizons is quantized in units of the Planck area. …”
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“…Two related scenarios for reconciling quantum mechanics with the existence of black hole-like objects, with “minimal” departure from general relativity and local quantum field theory, have been explored; one of these could produce signatures visible to EHT observations. …”
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“…Measurements of the dynamical environment of supermassive black holes (SMBHs) are becoming abundant and precise. …”
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“…Near extremal Kerr black holes (BHs) are subject to the Thorne limit |$a\lt a^*_{\rm lim}=0.998$| in the case of thin disc accretion, or some generalized version of this in other disc geometries. …”
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“…Primordial black holes could have been formed in the early universe from sufficiently large cosmological perturbations re-entering the horizon when the Universe is still radiation dominated. …”
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“…If these fluctuations have a large enough amplitude, they may collapse into primordial black holes upon horizon re-entry. Such primordial black holes may comprise the totality of the dark matter. …”
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