Results 61 to 70 of about 147,206 (344)
Detectability of ultralight scalar field dark matter with gravitational-wave detectors [PDF]
Physical Review D, 2018 An ultralight scalar field is one of the dark matter candidates. If it couples with Standard Model particles, it oscillates mirrors in gravitational-wave detectors and generates detectable signals.
S. Morisaki, T. Suyama
semanticscholar +1 more source
Pulsar timing residual induced by ultralight vector dark matter
European Physical Journal C: Particles and Fields, 2020 We study the ultralight vector dark matter with a mass around $$10^{-23}\,\mathrm {eV}$$ 10-23eV . The vector field oscillating coherently on galactic scales induces oscillations of the spacetime metric with a frequency around nHz, which is detectable by
Kimihiro Nomura, Asuka Ito, Jiro Soda
doaj +1 more source
Conformally coupled dark matter [PDF]
, 1996 Dark matter is obtained from a scalar field coupled conformally to gravitation; the scalar being a relict of Dirac's gauge function. This conformally coupled dark matter includes a gas of very light ($m\approx 2.25\times 10^{-34} eV$) neutral bosons ...
A. Tyson +20 more
core +2 more sources
Scalar field dark matter: behavior around black holes [PDF]
Journal of Cosmology and Astroparticle Physics, 2011 15 pages, 21 eps figures.
Cruz-Osorio, A. +2 more
openaire +2 more sources
One‐parametric description for scalar field dark matter potentials [PDF]
Astronomische Nachrichten, 2021 AbstractWe study the cosmological evolution for a scalar field dark matter model, by considering a parameterization of the evolution equations that allow us to unify in a single parameter a family of potentials: quadratic (free case), trigonometric (Axion‐like case), and hyperbolic.
Cedeño, Francisco X. Linares +1 more
openaire +2 more sources
Triple unification of inflation, dark energy, and dark matter in two-scalar-field cosmology [PDF]
Physical Review D, 2020 A unified description of inflation, dark energy, and dark matter is presented within a two-scalar-field cosmological model. Inflation, assumed to be of the warm type, is driven by one of the scalar fields, which, shortly after the end of the inflationary
P. M. S'a
semanticscholar +1 more source
Cosmic microwave background constraints on coupled dark matter
Physics Letters B, 2015 We study CMB constraints on a scenario where a fraction of dark matter is non-minimally coupled to a massless scalar field and dark energy is in the form of a cosmological constant.
Sophie C.F. Morris, Anne M. Green
doaj +1 more source
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
doaj +1 more source
Symmetron scalar fields: Modified gravity, dark matter, or both? [PDF]
Physical Review D, 2019 27 pages, 4 figures.
Burrage, Clare +3 more
openaire +2 more sources
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
doaj +1 more source