Results 141 to 150 of about 38,497 (193)

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

Primordial black hole-driven cosmic acceleration

International Journal of Modern Physics D
In this paper, we propose a natural mechanism for cosmic acceleration driven by Primordial Black Holes (PBHs) with repulsive behavior, within a Swiss Cheese cosmological framework. Considering regular black hole spacetimes such as Hayward, Bardeen and Dymnikova as well as the singular Schwarzschild-de Sitter case we consistently find a robust PBH ...
Konstantinos F. Dialektopoulos, Theodoros Papanikolaou, Vasilios Zarikas   +2 more
openaire   +2 more sources

Primordial black holes from Higgs vacuum instability: avoiding fine-tuning through an ultraviolet safe mechanism. [PDF]

Eur Phys J C Part Fields, 2018
Espinosa JR, Racco D, Riotto A.
europepmc   +1 more source

Constraints on Tsallis Cosmology from Big Bang Nucleosynthesis and the Relic Abundance of Cold Dark Matter Particles. [PDF]

Entropy (Basel), 2023
Jizba P, Lambiase G.
europepmc   +1 more source

Exploring Primordial Curvature Perturbation on Small Scales with the Lensing Effect of Fast Radio Bursts

The Astrophysical Journal
Cosmological observations, e.g., cosmic microwave background, have precisely measured the spectrum of primordial curvature perturbation on larger scales, but smaller scales are still poorly constrained.
Huan Zhou, Zhengxiang Li, Zong-Hong Zhu
doaj   +1 more source

Entropy of the Universe and Hierarchical Dark Matter. [PDF]

Entropy (Basel), 2022
Frampton PH.
europepmc   +1 more source

Gravity and Cosmology in Kaniadakis Statistics: Current Status and Future Challenges. [PDF]

Entropy (Basel), 2022
Luciano GG.
europepmc   +1 more source

Search for Sub-Solar Mass Binaries with Einstein Telescope and Cosmic Explorer. [PDF]

Entropy (Basel), 2022
Nunes RC.
europepmc   +1 more source

Ultralight Primordial Black Holes

The fate of ultralight black holes depends on whether or not evaporation stops at or around the Planck scale. If evaporation stops, the general expectation is that a population of Planck-scale will be left over, possibly including a significant fraction of electrically charged relics.
openaire   +2 more sources

Black Holes as Laboratories: Tests of General Relativity. [PDF]

Gen Relativ Gravit
Gregory R, Nissanke S.
europepmc   +1 more source