Results 61 to 70 of about 555,829 (322)

Gravity as a portal to reheating, leptogenesis and dark matter

open access: yesJournal of High Energy Physics, 2022
We show that a minimal scenario, utilizing only the graviton as an intermediate messenger between the inflaton, the dark sector and the Standard Model (SM), is able to generate simultaneously the observed relic density of dark matter (DM), the baryon ...
Basabendu Barman   +4 more
doaj   +1 more source

Gravitational hydrodynamics of large scale structure formation [PDF]

open access: yes, 2009
The gravitational hydrodynamics of the primordial plasma with neutrino hot dark matter is considered as a challenge to the bottom-up cold dark matter paradigm.
Aguirre A. N.   +20 more
core   +2 more sources

HMGB1 Derived from the Pyroptotic Microenvironment Promotes Macrophage Extracellular Traps in Hirschsprung‐Associated Enterocolitis

open access: yesAdvanced Biology, EarlyView.
HMGB1 derived from the pyroptotic environment in Hirschsprung‐associated enterocolitis mediates the formation of macrophage extracellular traps through TLR4 ‐p38 MAPK/p65 NF‐kB signaling pathways. Macrophage extracellular traps induce increased ROS production and pyroptosis of colonic epithelial cells.
Rui Zhang   +6 more
wiley   +1 more source

Testing alternative theories of gravity by fitting the hot-spot data of Sgr A*

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
We are fitting dynamics of electrically neutral hot-spot orbiting around Sagittarius A* (Sgr A*) source in Galactic center, represented by various modifications of the standard Kerr black hole (BH), to the three flares observed by the GRAVITY instrument ...
Misbah Shahzadi   +3 more
doaj   +1 more source

Discretely Charged Dark Matter in Inflation Models Based on Holographic Space-Time

open access: yesUniverse, 2022
The holographic space-time (HST) model of inflation has a potential explanation for dark matter as tiny primordial black holes. Motivated by a recent paper of Barrau, we propose a version of this model where some of the inflationary black holes (IBHs ...
Tom Banks, Willy Fischler
doaj   +1 more source

A Single Scale Theory for Cold and Hot Dark Matter

open access: yes, 1994
We show that a recently proposed extension of the MSSM can provide a scenario where both the cold and hot dark matter of the universe owe their origin to a single scale connected with the breakdown of the global B-L symmetry.
A. Klypin   +24 more
core   +1 more source

Axionic hot dark matter in the hadronic axion window [PDF]

open access: yesPhysics Letters B, 1998
Mixed dark matter scenario can reconcile the COBE data and the observed large scale structure. So far the massive neutrino with a mass of a few eV has been the only discussed candidate for the hot dark matter component. We point out that the hadronic axion in the so-called hadronic axion window, f_a \sim 10^6 GeV, is a perfect candidate as hot dark ...
Hitoshi Murayama   +2 more
openaire   +5 more sources

Low‐Activation Compositionally Complex Alloys for Advanced Nuclear Applications—A Review

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐activation compositionally complex alloys (LACCAs) are advanced metallic materials primarily composed of low‐activation elements, offering advantages such as rapid compliance with operational standards and safe recyclability. This review highlights their potential for extreme high‐temperature irradiation environments as structural materials for ...
Yangfan Wang   +8 more
wiley   +1 more source

What charged cosmic rays tell us on dark matter

open access: yesSciPost Physics Proceedings, 2023
Dark matter particles could be the major component of the haloes of galaxies. Their mutual annihilations or decays would produce an indirect signature under the form of high-energy cosmic-rays.
Pierre Salati
doaj   +1 more source

Is the Lambda CDM Model Consistent with Observations of Large-Scale Structure?

open access: yes, 2000
The claim that large-scale structure data independently prefers the Lambda Cold Dark Matter model is a myth. However, an updated compilation of large-scale structure observations cannot rule out Lambda CDM at 95% confidence. We explore the possibility of
AE Evrard   +12 more
core   +2 more sources

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