Results 101 to 110 of about 38,497 (193)
Primordial black hole formation in supergravity [PDF]
Physical Review D, 1999 15pages (RevTeX file), final version to be published in Phys.
Kawasaki, M., Yanagida, T.
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Signals of merging supermassive black holes in pulsar timing arrays
Physical Review ResearchIn this work we evaluate whether the gravitational wave background recently observed by a number of different pulsar timing arrays could be due to merging primordial supermassive black hole binaries.
Paul Frederik Depta +3 more
doaj +1 more source
Primordial black holes from conformal Higgs
Physics Letters BScale-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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Contemporary gravitational waves from primordial black holes [PDF]
, 2011 Stochastic background of gravitational waves (GW) generated by the interactions between primordial black holes (PBH) in the early universe and by PBH evaporation is considered.
Dolgov, A. D.
core +2 more sources
Two Micron‐Size Dark Dimensions
Fortschritte der Physik, Volume 73, Issue 8, August 2025.Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui +2 more
wiley +1 more source
Primordial black hole minimum mass
Physical Review D, 2006 In this paper we revisit thermodynamic constraints on primordial black hole (PBH) formation in the early universe. Under the assumption that PBH mass is equal to the cosmological horizon mass, one can use the 2nd Law of Thermodynamics to put a lower limit on the PBH mass.
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Properties and Dispersal of a Hydrothermal Plume in a Weakly Stratified Under‐Ice Environment
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 8, August 2025.Abstract The Aurora vent field (82°53.83′N, 6°15.32′W) is located in the weakly stratified Arctic Ocean under perennial ice cover at the western edge of the ultraslow‐spreading Gakkel Ridge, the slowest spreading mid‐ocean ridge on Earth. Here, we report data on the dispersal of the proximal hydrothermal plume in this extreme environment.
Maren Walter +11 more
wiley +1 more source
Primordial black hole formation [PDF]
Proceedings of Black Holes in General Relativity and String Theory — PoS(BHs, GR and Strings), 2009 This work is a review of our main results obtained from general relativistic numerical computations of primordial black-hole formation during the radiation-dominated era of the universe. As initial conditions we consider supra-horizon-scale perturbations of a type which could have come from inflation, with only a growing component and no decaying ...
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Primordial black holes as dark matter: interferometric tests of phase transition origin
Journal of High Energy PhysicsWe 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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Exploring primordial black holes and gravitational waves with R-symmetric GUT Higgs inflation
Physics Letters BThis study investigates the realization of R-symmetric Higgs inflation within the framework of no-scale-like supergravity, aiming to elucidate the formation of primordial black holes and observable gravitational waves within a class of GUT models.
Nadir Ijaz, Mansoor Ur Rehman
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