Results 1 to 10 of about 689,866 (345)
Model of the Galaxy with Hot Dark Matter [PDF]
Open Astronomy, 2018 The model of the galaxy is considered as a structure of the baryonic matter embedded into the hot dark matter. The dark matter is supposed to come into being from the decaying matter after the epoch of structure formation.
Khokhlov Dmitri L.
doaj +5 more sources
Indirect detection of hot dark matter
Journal of High Energy PhysicsCosmologically stable, light particles that came into thermal contact with the Standard Model in the early universe may persist today as a form of hot dark matter.
Jeff A. Dror +3 more
doaj +5 more sources
Interacting hot dark matter [PDF]
Physical Review D, 1997 We discuss the viability of a light particle ($\sim 30$ eV neutrino) with strong self-interactions as a dark matter candidate. The interaction prevents the neutrinos from free-streaming during the radiation dominated regime so galaxy sized density perturbations can survive. Smaller scale perturbations are damped due to neutrino diffusion.
F. Atrio‐Barandela, Sacha Davidson
core +7 more sources
Hot and heavy dark matter from a weak scale phase transition [PDF]
SciPost Physics, 2023 We point out that dark matter which is produced non-adiabatically in a phase transition (PT) with fast bubble walls receives a boost in velocity which leads to long free-streaming lengths.
Iason Baldes, Yann Gouttenoire, Filippo Sala
doaj +4 more sources
Dark matter as a heavy thermal hot relic [PDF]
Physics Letters B, 2020 If, during the early Universe epoch, the dark matter particle thermalizes in a hidden sector which does not thermalize with the Standard Model thermal bath, its relativistic thermal decoupling can easily lead to the observed relic density, even if the ...
Thomas Hambye +2 more
doaj +5 more sources
Thermal production of cold “hot dark matter” around eV [PDF]
Journal of High Energy Physics, 2023 A very simple production mechanism of feebly interacting dark matter (DM) that rarely annihilates is thermal production, which predicts the DM mass around eV. This has been widely known as the hot DM scenario.
Wen Yin
doaj +2 more sources
A model for mixed warm and hot right-handed neutrino dark matter [PDF]
Journal of High Energy Physics, 2021 We discuss a model where a mixed warm and hot keV neutrino dark matter rises naturally. We arrange active and sterile neutrinos in the same SU(3) L multiplet, with the lightest sterile neutrino being dark matter.
Maíra Dutra +3 more
doaj +2 more sources
Hot new early dark energy: Towards a unified dark sector of neutrinos, dark energy and dark matter [PDF]
Physics Letters B, 2022 Hot new early dark energy describes a supercooled, first-order phase transition that takes place at sub-eV temperatures in the dark sector. It lowers the sound horizon, which provides a possible solution to the Hubble tension, and, at the same time, it ...
Florian Niedermann, Martin S. Sloth
doaj +2 more sources
Breakdown of Chiral Perturbation Theory for the Axion Hot Dark Matter Bound [PDF]
Physical Review Letters, 2021 We show that the commonly adopted hot dark matter bound on the axion mass m_{a}≲1 eV is not reliable, since it is obtained by extrapolating the chiral expansion in a region where the effective field theory breaks down.
Luca Di Luzio, G. Martinelli, G. Piazza
openalex +3 more sources
Constraining Hot Dark Matter Sub-Species with Weak Lensing and the Cosmic Microwave Background Radiation [PDF]
Astronomy & Astrophysics, 2023 Although it is well known that the bulk of dark matter (DM) has to be cold, the existence of an additional sub-dominant, hot species remains a valid possibility.
Fabian Hervas Peters +4 more
openalex +3 more sources