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Warm Little Inflaton Becomes Cold Dark Matter [PDF]
Physical Review Letters, 2019 We present a model where the inflaton can naturally account for all the dark matter in the Universe within the warm inflation paradigm. In particular, we show that the symmetries and particle content of the warm little inflaton scenario (i) avoid large ...
João G. Rosa, Luís B. Ventura
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Cold dark matter: Controversies on small scales. [PDF]
Proc Natl Acad Sci U S A, 2015 The cold dark matter (CDM) cosmological model has been remarkably successful in explaining cosmic structure over an enormous span of redshift, but it has faced persistent challenges from observations that probe the innermost regions of dark matter halos ...
Weinberg DH +4 more
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Cold keV dark matter from decays and scatterings [PDF]
, 2017 We explore ways of creating cold keV-scale dark matter by means of decays and scatterings. The main observation is that certain thermal freeze-in processes can lead to a cold dark matter distribution in regions with small available phase space.
Julian Heeck, Daniele Teresi
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Dark matter effect on the weak deflection angle by black holes at the center of Milky Way and M87 galaxies [PDF]
European Physical Journal C: Particles and Fields, 2022 In this paper, we investigated the effect of dark matter on the weak deflection angle by black holes at the galactic center. We consider three known dark matter density profiles such as the Cold Dark Matter, Scalar Field Dark Matter, and the Universal ...
Reggie C. Pantig, Ali Övgün
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NIHAO IX: the role of gas inflows and outflows in driving the contraction and expansion of cold dark matter haloes [PDF]
, 2016 We use similar to 100 cosmological galaxy formation 'zoom-in' simulations using the smoothed particle hydrodynamics code GASOLINE to study the effect of baryonic processes on the mass profiles of cold dark matter haloes.
Aaron A. Dutton +9 more
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Warm dark matter does not do better than cold dark matter in solving small-scale inconsistencies [PDF]
, 2014 Over the last decade, warm dark matter (WDM) has been repeatedly proposed as an alternative scenario to the standard cold dark matter (CDM) one, potentially resolving several disagreements between the CDM model and observations on small scales.
Aurel Schneider +3 more
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IWDM: the fate of an interacting non-cold dark matter — vacuum scenario [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 In most cosmological models, the equation of state of the dark matter is assumed to be zero, which means that the dark matter is pressure-less or cold. While this hypothesis is based on the abundance of cold dark matter in the universe, however, there is
S. Pan +4 more
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Non-cold dark matter from primordial black hole evaporation [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 Dark matter coupled solely gravitationally can be produced through the decay of primordial black holes in the early universe. If the dark matter is lighter than the initial black hole temperature, it could be warm enough to be subject to structure ...
Iason Baldes +3 more
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Updated constraints on decaying cold dark matter [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 In this paper we update the constraints on the simple decaying cold dark matter (DCDM) model with dark radiation (DR) as decay product. We consider two different regimes of the lifetime, i.e.
Andreas Nygaard, T. Tram, S. Hannestad
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The asymptotic tidal remnants of cold dark matter subhaloes [PDF]
Monthly notices of the Royal Astronomical Society, 2020 We use N-body simulations to study the evolution of cuspy cold dark matter (CDM) haloes in the gravitational potential of a massive host. Tidal mass-losses reshape CDM haloes, leaving behind bound remnants whose characteristic densities are set by the ...
R. Errani, J. Navarro
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