Results 71 to 80 of about 143,913 (244)
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
Relativistic drag forces on black holes from scalar dark matter clouds of all sizes [PDF]
Physical Review D, 2023 We use numerical simulations of scalar field dark matter evolving on a moving black hole background to confirm the regime of validity of (semi-)analytic expressions derived from first principles for both dynamical friction and momentum accretion in the ...
D. Traykova +6 more
semanticscholar +1 more source
Scalar Field Dark Matter and Galaxy Formation [PDF]
, 2002 9 pages, 12 eps figures. Invited talk, DARK 2002: 4th Heidelberg International Conference on Dark Matter in Astro and Particle Physics, 4-9 Feb 2002 Cape Town, South ...
Alcubierre, M. +5 more
openaire +4 more sources
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
doaj +1 more source
Advances in High Energy Physics, 2017 We investigate matter creation processes during the reheating period of the early Universe, by using the thermodynamic of open systems. The Universe is assumed to consist of the inflationary scalar field, which, through its decay, generates relativistic ...
Juntong Su +2 more
doaj +1 more source
Bose-Einstein-condensed scalar field dark matter and the gravitational wave background from inflation: New cosmological constraints and its detectability by LIGO [PDF]
, 2016 We consider an alternative cold dark matter candidate, ultralight bosons ($m>10^{-22}$eV) described by a complex scalar field (SFDM) with global U(1) symmetry, with comoving particle number density conserved after particle production during standard ...
Bohua Li, P. Shapiro, T. Rindler-Daller
semanticscholar +1 more source
The Open Journal of Astrophysics, 2021 We apply the squeezed state formalism to scalar field dark matter (e.g. axion) perturbations generated during inflation. As for the inflationary perturbations, the scalar field state becomes highly squeezed as modes exit the horizon. For as long as $H>m_\
Jondalar L. J. Kuß, David J. E. Marsh
doaj +1 more source
Multistate scalar field dark matter and its correlation with galactic properties [PDF]
, 2017 In this paper, we search for correlations between the intrinsic properties of galaxies and the Bose-Einstein condensate (BEC) under a scalar field dark matter (SFDM) at temperature of condensation greater than zero.
A. Hernández-Almada +2 more
semanticscholar +1 more source
Dark matter, electroweak phase transition, and gravitational waves in the type II two-Higgs-doublet model with a singlet scalar field [PDF]
, 2020 In the framework of type-II two-Higgs-doublet model with a singlet scalar dark matter $S$, we study the dark matter observables, the electroweak phase transition, and the gravitational wave signals by such strongly first order phase transition after ...
Xiao-Fang Han, Lei Wang, Yang Zhang
semanticscholar +1 more source
Static Configurations of Dark Energy and Dark Matter
, 2005 We study static configurations of dark matter coupled to a scalar field responsible for the dark energy of the Universe. The dark matter is modelled as a Fermi gas within the Thomas-Fermi approximation. The mass of the dark matter particles is a function
Barbieri R Hall L J Oliver S J Strumia A +11 more
core +3 more sources