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of 8 829
pro vyhledávání: '"Standard Cosmology"'
In this work, we investigate the generation of primordial black holes (PBHs) within the framework of single-field inflationary models and their compatibility with the cosmological history of the Universe. Our results suggest that, depending on the ma
Externí odkaz:
http://arxiv.org/abs/2412.14049
Autor:
Hergt, Lukas Tobias, Scott, Douglas
The standard cosmological model is sufficiently well constrained that precise estimates can be provided for the redshift of various physically defined times in the chronology of the Universe. For example, it is well known that matter-radiation equali
Externí odkaz:
http://arxiv.org/abs/2411.07703
Autor:
Coley, A. A.
Recent observations from the James Webb Space Telescope have identified a population of massive galaxy sources ($\mathrm{>10^{10}\ M_\odot}$) at $z>7-10$, formed less than 700 Myr after the Big Bang. Such massive galaxies do not have enough time to f
Externí odkaz:
http://arxiv.org/abs/2312.14738
Publikováno v:
JCAP 04(2024)055
In this paper, we construct a viable model for a GeV scale self-interacting dark matter (DM), where the DM was thermally produced in the early universe. Here, a new vector-like fermion with a dark charge under the $U(1)_{D}$ gauge symmetry serves as
Externí odkaz:
http://arxiv.org/abs/2310.05676
Autor:
Dutta, Manoranjan
Discrepancies of the $\Lambda {\rm CDM}$ model with small-scale cosmological observations and stringent constraints from direct search experiments cast doubts over typical weak scale cold dark matter candidates e.g. WIMPs. Self-interacting dark matte
Externí odkaz:
http://arxiv.org/abs/2310.03909
The Hubble diagram of quasars, as candidates to ``standardizable" candles, has been used to measure the expansion history of the Universe at late times, up to very high redshifts ($z \sim 7$). It has been shown that this history, as inferred from the
Externí odkaz:
http://arxiv.org/abs/2309.07212
Publikováno v:
JCAP 08 (2023) 026
Indirect searches of Dark Matter (DM), in conjugation with `missing track searches' at the collider seem to confine SU(2)$_L$ fermion triplet DM (FTDM) mass within a narrow range around 1 TeV. The canonical picture of the pure FTDM is in tension sinc
Externí odkaz:
http://arxiv.org/abs/2303.13950
Akademický článek
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Publikováno v:
JHEP 06 (2023) 198
We examine the singlet-doublet fermionic dark matter model, where the non-thermal production of the dark matter in light of a non-standard cosmology demands a significantly large interaction rate than the typical radiation-dominated Universe. Despite
Externí odkaz:
http://arxiv.org/abs/2301.02514
Autor:
Hanin, A.1 (AUTHOR) abdeljalil.hanin.2019@gmail.com, El Bourakadi, K.1,2 (AUTHOR), Ferricha-Alami, M.1,2 (AUTHOR), Sakhi, Z.1,2 (AUTHOR), Bennai, M.1,2 (AUTHOR)
Publikováno v:
International Journal of Theoretical Physics. Jul2023, Vol. 62 Issue 7, p1-14. 14p.
