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Neutrino interactions in the late universe
Journal of High Energy Physics, 2021 The cosmic neutrino background is both a dramatic prediction of the hot Big Bang and a compelling target for current and future observations. The impact of relativistic neutrinos in the early universe has been observed at high significance in a number of
Daniel Green +2 more
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That Raw and Ancient Cold: On Graham Harman’s Recasting of Archaeology
Open Philosophy, 2021 This is a comment to Graham Harman’s 2019 response to an article by Þóra Pétursdóttir and Bjørnar Olsen (2018) in which they propose that a materially grounded, archaeological perspective might complement Harman’s historical approach in Immaterialism ...
Sørensen Tim Flohr
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Cosmological gravitational particle production of massive spin-2 particles
Journal of High Energy Physics, 2023 The phenomenon of cosmological gravitational particle production (CGPP) is expected to occur during the period of inflation and the transition into a hot big bang cosmology.
Edward W. Kolb +3 more
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Gravity as a portal to reheating, leptogenesis and dark matter
Journal 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
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Axion hot dark matter bounds after Planck [PDF]
Journal of Cosmology and Astroparticle Physics, 2013 20 pages, 8 figures, matches version published in JCAP 1310 (2013 ...
Archidiacono M +4 more
openaire +5 more sources
The Open Journal of Astrophysics, 2021 We apply the squeezed state formalism to scalar field dark matter (e.g. axion) perturbations generated during inflation. As for the inflationary perturbations, the scalar field state becomes highly squeezed as modes exit the horizon. For as long as $H>m_\
Jondalar L. J. Kuß, David J. E. Marsh
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Testing alternative theories of gravity by fitting the hot-spot data of Sgr A*
European 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
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Discretely Charged Dark Matter in Inflation Models Based on Holographic Space-Time
Universe, 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
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Hot leptogenesis from thermal Dark Matter
Journal of Cosmology and Astroparticle Physics, 2017 29 pages, 11 figures.
Nicolás Bernal +2 more
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Astronomical Signatures of Dark Matter
Advances in High Energy Physics, 2014 Several independent astronomical observations in different wavelength bands reveal the existence of much larger quantities of matter than what we would deduce from assuming a solar mass to light ratio. They are very high velocities of individual galaxies
Paul Gorenstein, Wallace Tucker
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