Results 111 to 120 of about 143,913 (244)
Some cosmological consequences of higher dimensional Klein–Gordon–Rastall theory
European Physical Journal C: Particles and Fields, 2023 Using dynamical system analysis, we investigate some cosmological consequences of Rastall gravity coupled to a scalar field (called the Klein–Gordon–Rastall theory) with exponential scalar potential turned on in higher dimensions.
Tegar Ari Widianto +4 more
doaj +1 more source
Dark fluid: A complex scalar field to unify dark energy and dark matter [PDF]
Physical Review D, 2006 9 pages, 3 figures, references added, minor corrections and ...
Alexandre Arbey, Alexandre Arbey
openaire +3 more sources
Flat central density profile and constant dark matter surface density in galaxies from scalar field dark matter [PDF]
, 2012 Using the scalar field dark matter (SFDM) model, it is proposed that galaxies form by con- densation of a scalar field (SF) very early in the Universe, forming Bose-Einstein condensate (BEC) drops (i.e.
V. Robles, T. Matos
semanticscholar +1 more source
Coupling dark energy to dark matter inhomogeneities
, 2016 We propose that dark energy in the form of a scalar field could effectively couple to dark matter inhomogeneities. Through this coupling energy could be transferred to/from the scalar field, which could possibly enter an accelerated regime.
Marra, Valerio
core +1 more source
Higgsino dark matter in a non-standard history of the universe
Physics Letters B, 2019 A light higgsino is strongly favored by the naturalness, while as a dark matter candidate it is usually under-abundant. We consider the higgsino production in a non-standard history of the universe, caused by a scalar field with an initially displaced ...
Chengcheng Han
doaj +1 more source
Study of rotation curves of spiral galaxies with a scalar field dark matter model
, 2012 In this work we study rotation curves of spiral galaxies using a model of dark matter based on a scalar-tensor theory of gravity. We show how to estimate the scalar field dark matter parameters using a sample of observed rotation curves.Comment: 6 pages,
Rodriguez-Meza, Mario A.
core +1 more source
Interaction between Dark Matter and Dark Energy and the Cosmological Coincidence Problem
Advances in High Energy Physics, 2014 We consider a quintessence model of dark energy inspired by scalar-tensor theories of gravity where the scalar field is nonminimally coupled to gravity and dark matter. By considering exponential potential as self-interaction potential, the stability and
Kourosh Nozari +2 more
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Scalar fields in Cosmology: dark matter and inflation [PDF]
Journal of Physics: Conference Series, 2016 Scalar fields have been widely used in cosmology during the last three decades, but it is until now that we have been able to fully understand their role as possible major matter components for the evolution of the Universe. Here we briefly present recent studies on scalar fields that show how their intrinsic properties are translated into observables ...
openaire +1 more source
Constraints on Scalar Phantoms
, 2010 We update the constraints on the minimal model of dark matter, where a stable real scalar field is added to the standard model Lagrangian with a renormalizable coupling to the Higgs field.
E. Aprile +5 more
core +1 more source
Dynamics of dark matter misalignment through the Higgs portal
Journal of High Energy PhysicsA light singlet scalar field feebly coupled through the super-renormalizable Higgs portal provides a minimal and well-motivated realization of ultra-light bosonic dark matter.
Brian Batell, Akshay Ghalsasi, Mudit Rai
doaj +1 more source