Results 21 to 30 of about 143,913 (244)
Scale-invariant scalar field dark matter through the Higgs portal [PDF]
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
doaj +2 more sources
How the scalar field of unified dark matter models can cluster [PDF]
, 2008 We use scalar-field Lagrangians with a non-canonical kinetic term to obtain unified dark matter models where both the dark matter and the dark energy, the latter mimicking a cosmological constant, are described by the scalar field itself.
Daniele Bertacca +3 more
openalex +4 more sources
Scalar field dark matter with spontaneous symmetry breaking and the 3.5 keV line [PDF]
Physics Letters B, 2018 We show that the present dark matter abundance can be accounted for by an oscillating scalar field that acquires both mass and a non-zero expectation value from interactions with the Higgs field.
Catarina Cosme +2 more
doaj +2 more sources
Scalar field dark matter, cross section and Planck-scale physics [PDF]
, 2002 In recent papers we have proposed that the dark matter of the Universe could be from scalar field origin. In this letter, we find that if the scale of renormalization of the model is of order of the Planck Mass, then a scalar field $\Phi $ endowed with ...
Tonatiuh Matos +1 more
openalex +4 more sources
The inflaton portal to dark matter [PDF]
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
doaj +3 more sources
Brief Review on Scalar Field Dark Matter Models
Frontiers in Astronomy and Space Sciences, 2019 The existence of dark matter in the universe has been solidly established in the last decades, after the arrival of accurate cosmological and astrophysical observations, and some consider it the most challenging problem in modern physics.
L. Arturo Ureña-López
doaj +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
Paulo M. Sá
openalex +3 more sources
Constraining scalar fields with stellar kinematics and collisional dark matter [PDF]
, 2010 The existence and detection of scalar fields could provide solutions to long-standing puzzles about the nature of dark matter, the dark compact objects at the centre of most galaxies, and other phenomena.
Pau Amaro‐Seoane +3 more
openalex +3 more sources
Testing the mean field theory of scalar field dark matter
SciPost Physics Proceedings, 2023 Scalar field dark matter offers an interesting alternative to the traditional WIMP dark matter picture. Astrophysical and cosmological simulations are useful to constraining the mass of the dark matter particle in this model. This is particularly true at
Andrew Eberhardt, Alvaro Zamora, Michael Kopp, Tom Abel
doaj +3 more sources
Dark Matter from Scalar Field Fluctuations. [PDF]
Physical Review Letters, 2019 Dark matter (DM) may have its origin in a pre-big-bang epoch, the cosmic inflation. Here, we consider for the first time a broad class of scenarios where a massive free scalar field unavoidably reaches an equilibrium between its classical and quantum ...
Tommi Tenkanen
semanticscholar +6 more sources