Results 21 to 30 of about 41,122 (294)
Dwarf galaxies in multistate scalar field dark matter halos [PDF]
Physical Review D, 2014 We analyse the velocity dispersion for eight of the Milky Way dwarf spheroidalsatellites in the context of finite temperature scalar field dark mater.
L. Martinez-Medina +2 more
semanticscholar +4 more sources
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
doaj +4 more sources
Higgs particles interacting via a scalar Dark Matter field [PDF]
EPJ Web of Conferences, 2016 We study a system of two Higgs particles, interacting via a scalar Dark Matter mediating field. The variational method in the Hamiltonian formalism of QFT is used to derive relativistic wave equations for the two-Higgs system, using a truncated Fock ...
Bhattacharya Yajnavalkya, Darewych Jurij
doaj +4 more sources
Core-envelope haloes in scalar field dark matter with repulsive self-interaction: fluid dynamics beyond the de Broglie wavelength [PDF]
Monthly notices of the Royal Astronomical Society, 2021 Scalar Field Dark Matter (SFDM) comprised of ultralight bosons has attracted great interest as an alternative to standard, collisionless Cold Dark Matter (CDM) because of its novel structure-formation dynamics, described by the coupled Schrödinger ...
Taha Dawoodbhoy +2 more
semanticscholar +1 more source
The quantum character of the Scalar Field Dark Matter [PDF]
Monthly notices of the Royal Astronomical Society, 2022 The Scalar Field Dark Matter (SFDM) model, also called Fuzzy, Wave, Bose-Einstein, 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
T. Matos
semanticscholar +1 more source
Cosmological structure formation in scalar field dark matter with repulsive self-interaction: The incredible shrinking jeans mass [PDF]
Monthly notices of the Royal Astronomical Society, 2021 Scalar Field Dark Matter (SFDM) comprised of ultralight (≳ 10−22 eV) bosons is an alternative to standard, collisionless Cold Dark Matter (CDM) that is CDM-like on large scales but inhibits small-scale structure formation. As a Bose-Einstein condensate,
P. Shapiro +2 more
semanticscholar +1 more source
Scalar field (wave) dark matter [PDF]
The Fourteenth Marcel Grossmann Meeting, 2017 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. On the other hand the standard cold dark matter model simulations predict a more cuspy behavior.
Matos, T., Robles, Victor H.
openaire +2 more sources
Core-halo mass relation in scalar field dark matter models and its consequences for the formation of supermassive black holes [PDF]
Physical Review D, 2020 Scalar-field dark matter (SFDM) halos exhibit a core-envelope structure with soliton-like cores and CDM-like envelopes. Simulations without self-interaction (free-field case) report a core-halo mass relation $M_c\propto M_{h}^{\beta}$, with either $\beta=
Luis E. Padilla +4 more
semanticscholar +1 more source
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 ...
Merab Gogberashvili, Alexander Sakharov
openaire +2 more sources
Analytical treatment of small scales matter power spectrum in coupled scalar field (CSF) cosmology [PDF]
EPJ Web of Conferences, 2020 In this paper, we reconstruct matter power spectrum of a cosmological model in which coupled scalar field acts as dark energy. The coupled scalar field (CSF) dark energy we propose here is a generalized model of quintessence, k-essence or phantom coupled
Mulki Fargiza A. M., Wulandari Hesti
doaj +1 more source