Primordial black holes and their gravitational-wave signatures [PDF]
Living Reviews in Relativity, 2023 In the recent years, primordial black holes (PBHs) have emerged as one of the most interesting and hotly debated topics in cosmology. Among other possibilities, PBHs could explain both some of the signals from binary black hole mergers observed in ...
Eleni Bagui +20 more
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Inflation and Primordial Black Holes [PDF]
Universe, 2023 We review conceptual aspects of inflationary scenarios able to produce primordial black holes by amplifying the size of curvature fluctuations to the level required to trigger black hole formation. We identify general mechanisms to do so, both for single-
Ogan Özsoy, Gianmassimo Tasinato
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Constraints on primordial black holes [PDF]
Reports on Progress in Physics, 2020 We update the constraints on the fraction of the Universe that may have gone into primordial black holes (PBHs) over the mass range 10−5 to 1050 g. Those smaller than ∼1015 g would have evaporated by now due to Hawking radiation, so their abundance at ...
B. Carr +3 more
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Implications of pulsar timing array data for scalar-induced gravitational waves and primordial black holes: Primordial non-Gaussianity f_{NL} considered [PDF]
Physical Review Research, 2023 Multiple pulsar-timing-array collaborations have reported strong evidence for the existence of a gravitational-wave background. We study physical implications of this signal for cosmology, assuming that it is attributed to scalar-induced gravitational ...
Sai Wang +3 more
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Spinning primordial black holes from first order phase transition [PDF]
Journal of High Energy Physics, 2023 We conduct a novel study to obtain the initial spin of the primordial black holes created during a first-order phase transition due to delayed false vacuum decay.
Indra Kumar Banerjee, Ujjal Kumar Dey
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Primordial black holes as dark matter: interferometric tests of phase transition origin [PDF]
Journal of High Energy Physics, 2023 We show that primordial black holes — in the observationally allowed mass window with f PBH = 1 — formed from late nucleating patches in a first order phase transition imply upcoming gravitational wave interferometers will see a large stochastic ...
Iason Baldes, María Olalla Olea-Romacho
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Primordial black holes from conformal Higgs [PDF]
Physics Letters B, 2023 Scale-invariant extensions of the electroweak theory are not only attractive because they can dynamically generate the weak scale, but also due to their role in facilitating supercooled first-order phase transitions.
Yann Gouttenoire
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Gravitational waves from primordial black holes and new weak scale phenomena
Physics Letters B, 2017 We entertain the possibility that primordial black holes of mass ∼(1026–1029) g, with Schwarzschild radii of O(cm), constitute ∼10% or more of cosmic dark matter, as allowed by various constraints.
Hooman Davoudiasl, Pier Paolo Giardino
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Primordial black holes as a probe of strongly first-order electroweak phase transition
Physics Letters B, 2022 Primordial black holes can be produced by density fluctuations generated from delayed vacuum decays of first-order phase transition. The primordial black holes generated at the electroweak phase transition have masses of about 10−5 solar mass.
Katsuya Hashino +2 more
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Recent Gravitational Wave Observation by Pulsar Timing Arrays and Primordial Black Holes: The Importance of Non-Gaussianities. [PDF]
Physical Review Letters, 2023 We study whether the signal seen by pulsar timing arrays (PTAs) may originate from gravitational waves (GWs) induced by large primordial perturbations. Such perturbations may be accompanied by a sizable primordial black hole (PBH) abundance.
G. Franciolini +3 more
semanticscholar +1 more source