Results 11 to 20 of about 110,473 (324)
Scalar field dark matter and the Higgs field
Physics Letters B, 2016 We discuss the possibility that dark matter corresponds to an oscillating scalar field coupled to the Higgs boson. We argue that the initial field amplitude should generically be of the order of the Hubble parameter during inflation, as a result of its ...
O. Bertolami +2 more
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Scalar Field (Wave) Dark Matter [PDF]
The Fourteenth Marcel Grossmann Meeting, 2016 Recent high-quality observations of dwarf and low surface brightness (LSB) galaxies have shown that their dark matter (DM) halos prefer flat central density profiles.
Matos, T., Robles, Victor H.
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Halos of unified dark matter scalar field [PDF]
Journal of Cosmology and Astroparticle Physics, 2008 We investigate the static and spherically symmetric solutions of Einstein's equations for a scalar field with non-canonical kinetic term, assumed to provide both the dark matter and dark energy components of the Universe. In particular, we give a prescription to obtain solutions (dark halos) whose rotation curve v_c(r) is in good agreement with ...
Daniele Bertacca +2 more
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Effective field theory and scalar triplet dark matter
Journal of High Energy PhysicsWe discuss an extension of the standard model with a real scalar triplet, T, including non-renormalizable operators (NROs) up to d = 6. If T is odd under a Z 2 symmetry, the neutral component of T is a good candidate for the dark matter (DM) of the ...
Carolina Arbeláez +4 more
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Scalar field dark matter in hybrid approach [PDF]
Physical Review D, 2017 We develop a hybrid formalism suitable for modeling scalar field dark matter, in which the phase-space distribution associated to the real scalar field is modeled by statistical equal-time two-point functions and gravity is treated by two stochastic ...
Friedrich, Pavel, Prokopec, Tomislav
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Symmetron scalar fields: Modified gravity, dark matter, or both? [PDF]
Physical Review D, 2019 27 pages, 4 figures.
Clare Burrage +3 more
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Cosmological constraints on scalar field dark matter [PDF]
International Journal of Modern Physics D, 2021 This paper aims to put constraints on the parameters of the Scalar Field Dark Matter (SFDM) model, when dark matter is described by a free real scalar field filling the whole universe, plus a cosmological constant term. By using a compilation of 51 [Formula: see text] data and 1048 Supernovae data from Panteon, a mass range for the scalar field was ...
A. A. Escobal +2 more
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The quantum character of the Scalar Field Dark Matter [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT The scalar field dark matter (SFDM) model, also called Fuzzy, Wave, Bose–Einstein, and Ultra-light Dark Matter, has received a lot of attention because it has been able to provide simpler and more natural explanations for various features of galaxies, such as the number of satellite galaxies and the cusp-core problem.
Tonatiuh Matos
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Search for Chameleon Scalar Fields with the Axion Dark Matter Experiment [PDF]
Physical Review Letters, 2010 Scalar fields with a "chameleon" property, in which the effective particle mass is a function of its local environment, are common to many theories beyond the standard model and could be responsible for dark energy. If these fields couple weakly to the photon, they could be detectable through the afterglow effect of photon-chameleon-photon transitions.
G. Rybka +13 more
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Can dark matter be a scalar field? [PDF]
Journal of Cosmology and Astroparticle Physics, 2016 In this paper we study a real scalar field as a possible candidate to explain the dark matter in the universe. In the context of a free scalar field with quadratic potential, we have used Union 2.1 SN Ia observational data jointly with a Planck prior over the dark matter density parameter to set a lower limit on the dark matter mass as $m\geq0.12H_0 ...
Jesus, J. F. +3 more
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