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pro vyhledávání: '"Heurtier A"'
We propose a new mechanism of primordial black hole formation via an aborted phase transition during the early matter-dominated stage of reheating after inflation. In reheating, induced by the decay of a pressureless fluid dominating the Universe at
Externí odkaz:
http://arxiv.org/abs/2409.02175
When light primordial black holes (PBHs) evaporate in the early Universe, they locally reheat the surrounding plasma, creating hot spots with temperatures that can be significantly higher than the average plasma temperature. In this work, we provide
Externí odkaz:
http://arxiv.org/abs/2409.02173
It has recently been realized that many theories of physics beyond the Standard Model give rise to cosmological histories exhibiting extended epochs of cosmological stasis. During such epochs, the abundances of different energy components such as mat
Externí odkaz:
http://arxiv.org/abs/2406.06830
Autor:
Abel, Steven, Heurtier, Lucien
We derive an exact version of the Schwinger Proper Time Renormalisation Group flow equation from first principles from the complete path integral, without using any perturbative expansion. We study the advantages of this flow equation as compared to
Externí odkaz:
http://arxiv.org/abs/2311.12102
The Hawking evaporation of primordial black holes (PBH) reheats the Universe locally, forming hot spots that survive throughout their lifetime. We propose to use the temperature profile of such hot spots to calculate the decay rate of metastable vacu
Externí odkaz:
http://arxiv.org/abs/2311.01869
Many theories of BSM physics predict the existence of large or infinite towers of decaying states. In a previous paper (arXiv:2111.04753) we pointed out that this can give rise to a surprising cosmological phenomenon that we dubbed "stasis" during wh
Externí odkaz:
http://arxiv.org/abs/2309.10345
Publikováno v:
JHEP 08 (2023) 196
Light primordial black holes (PBHs) with masses smaller than $10^9$ g ($10^{-24} M_\odot$) evaporate before the onset of Big-Bang nucleosynthesis, rendering their detection rather challenging. If efficiently produced, they may have dominated the univ
Externí odkaz:
http://arxiv.org/abs/2304.04793
Next-generation large-volume detectors, such as GRAND, POEMMA, Trinity, TAROGE-M, TAMBO, or PUEO, have been designed to search for ultra-high-energy cosmic rays (UHECRs) with unprecedented sensitivity. We propose to use these detectors to search for
Externí odkaz:
http://arxiv.org/abs/2303.11352
Many cosmological phenomena lead to the production of primordial black holes in the early Universe. These phenomena often create a population of black holes with extended mass and spin distributions. As these black holes evaporate via Hawking radiati
Externí odkaz:
http://arxiv.org/abs/2212.03878
A variety of scenarios for early-universe cosmology give rise to a population of primordial black holes (PBHs) with a broad spectrum of masses. The evaporation of PBHs in such scenarios has the potential to place the universe into an extended period
Externí odkaz:
http://arxiv.org/abs/2212.01369