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Scale-invariant scalar field dark matter through the Higgs portal
Journal of High Energy Physics, 2018 We discuss the dynamics and phenomenology of an oscillating scalar field coupled to the Higgs boson that accounts for the dark matter in the Universe. The model assumes an underlying scale invariance such that the scalar field only acquires mass after ...
Catarina Cosme +2 more
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Dark matter candidate induced by Horndeski theory: dark matter halo and cosmological evolution [PDF]
Phys. Rev. D 101, 024046 (2020), 2019 We study spherically symmetric solutions with a scalar field in the shift-symmetric subclass of the Horndeski theory. Constructing an effective energy-momentum tensor of the scalar field based on the two-fluid model, we decompose the scalar field into two components: dark matter and dark energy.We find the dark-matter fluid is pressure-less, and its ...
arxiv +1 more source
Scalar field dark matter in clusters of galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 One alternative to the cold dark matter (CDM) paradigm is the scalar field dark matter (SFDM) model, which assumes dark matter is a spin-0 ultra-light scalar field (SF) with a typical mass $m\sim10^{-22}\mathrm{eV}/c^2$ and positive self-interactions.
Tonatiuh Matos +2 more
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Supplying dark energy from scalar field dark matter [PDF]
International Journal of Modern Physics D, 2018 We consider the hypothesis that dark matter (DM) and dark energy (DE) consist of ultra-light self-interacting scalar particles. It is found that the Klein–Gordon equation with only two free parameters (mass and self-coupling) on a Schwarzschild background, at the galactic length-scales has the solution which corresponds to Bose–Einstein Condensate ...
Alexander S. Sakharov +3 more
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Dark Matter from Scalar Field Fluctuations [PDF]
Physical Review Letters, 2019 5 pages, 2 figures.
openaire +4 more sources
Physics Letters B, 2016 We consider a resonant SIMP dark matter in models with two singlet complex scalar fields charged under a local dark U(1)D. After the U(1)D is broken down to a Z5 discrete subgroup, the lighter scalar field becomes a SIMP dark matter which has the ...
Soo-Min Choi, Hyun Min Lee
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interplay between black holes and ultralight dark matter: analytic solutions
Journal of High Energy Physics, 2023 Dark matter (DM) can consist of a scalar field so light that DM particles in the galactic halo are best described by classical waves. We investigate how these classical solutions are influenced by the presence of a non-rotating supermassive black hole at
Bruno Bucciotti, Enrico Trincherini
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Higgs Portal Inflation with Fermionic Dark Matter
EPJ Web of Conferences, 2018 We discuss the inflationary model presented in [1], involving a gauge singlet scalar field and fermionic dark matter added to the standard model. Either the Higgs or the singlet scalar could play the role of the inflaton, and slow roll is realized ...
Aravind Aditya +2 more
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COMPLEX SCALAR FIELD DARK MATTER ON GALACTIC SCALES [PDF]
Modern Physics Letters A, 2014 The nature of the cosmological dark matter (DM) remains elusive. Recent studies have advocated the possibility that DM could be composed of ultra-light, self-interacting bosons, forming a Bose–Einstein condensate (BEC) in the very early Universe. We consider models which are charged under a global U(1)-symmetry such that the DM number is conserved. It
Paul R. Shapiro +2 more
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The inflaton portal to dark matter
Journal of High Energy Physics, 2017 We consider the possibility that the inflaton is part of the dark sector and interacts with the standard model through a portal interaction with a heavy complex scalar field in equilibrium with the standard model at high energies.
Lucien Heurtier
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