Results 121 to 130 of about 176,413 (293)
Cosmological implications of primordial black holes [PDF]
Journal of Cosmology and Astroparticle Physics, 2017 20 pages, 9 figures.
Luis Bernal J. +3 more
openaire +3 more sources
Primordial Gravitational Waves From Black Hole Evaporation in Standard and Non-Standard Cosmologies [PDF]
, 2023 Aurora Ireland +2 more
openalex +1 more source
Primordial black hole formation and abundance: contribution from the non-linear relation between the density and curvature perturbation [PDF]
Journal of Cosmology and Astroparticle Physics, 2019 The formation and abundance of primordial black holes (PBHs) arising from the curvature perturbation ζ is studied. The non-linear relation between ζ and the density contrast δ means that, even when ζ has an exactly Gaussian distribution, significant non ...
S. Young, I. Musco, C. Byrnes
semanticscholar +1 more source
Advances in Topological Thermoelectrics: Harnessing Quantum Materials for Energy Applications
Advanced Materials, Volume 37, Issue 39, October 2, 2025.Topological materials offer a novel platform for thermoelectric energy conversion through unique band features, including band inversion, linear Dirac bands, surface states, and Berry curvature. These quantum characteristics enable enhanced longitudinal and transverse thermoelectric effects, establishing topological thermoelectrics as a promising ...
Guangsai Yang +8 more
wiley +1 more source
Massive Primordial Black Holes [PDF]
Proceedings of Multifrequency Behaviour of High Energy Cosmic Sources - XIII — PoS(MULTIF2019), 2020 21 page, presented at Multifrequency Behaviour of High Energy Cosmic Sources - XIII - MULTIF2019, 3-8 June 2019; Palermo ...
openaire +2 more sources
Quantum formation of primordial black holes [PDF]
General Relativity and Gravitation, 2019 We provide a (simplified) quantum description of primordial black holes at the time of their formation. Specifically, we employ the horizon quantum mechanics to compute the probability of black hole formation starting from a simple quantum mechanical characterization of primordial density fluctuations given by a Planckian spectrum. We then estimate the
Casadio, Roberto +3 more
openaire +4 more sources
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
International Journal for Numerical Methods in Engineering, Volume 126, Issue 18, 30 September 2025.ABSTRACT There is a variety of microstructured materials that involve voids and pores, for example, high‐porosity foams, mechanical metamaterials, or composites involving defects due to damage and cracking, respectively. Computational methods based on the fast Fourier transform (FFT) typically face convergence problems for such microstructures unless ...
Lennart Risthaus, Matti Schneider
wiley +1 more source
Primordial black holes in scalar field inflation coupled to the Gauss-Bonnet term with fractional power-law potentials [PDF]
, 2023 Ali Ashrafzadeh, K. Karami
openalex +1 more source
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