Results 31 to 40 of about 669,527 (312)
Mimetic Tensor-Vector-Scalar Cosmology: Incorporating Dark Matter, Dark Energy and Stiff Matter [PDF]
, 2021 Phenomenological implications of the Mimetic Tensor-Vector-Scalar theory (MiTeVeS) are studied. The theory is an extension of the vector field model of mimetic dark matter, where a scalar field is also incorporated, and it is known to be free from ghost instability.
arxiv +1 more source
Scalar field dark matter in hybrid approach [PDF]
Physical Review D, 2017 This version matches the one accepted for publication in Physical Review D.
Friedrich, Pavel, Prokopec, Tomislav
openaire +4 more sources
Searching for Scalar Field Dark Matter with LIGO
Physical Review LettersWe report on a direct search for scalar field dark matter using data from LIGO’s third observing run. We analyze the coupling of size oscillations of the interferometer’s beam splitter and arm test masses that may be caused by scalar field dark matter.
Alexandre Göttel +6 more
openalex +5 more sources
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 ...
BERTACCA, DANIELE +2 more
openaire +3 more sources
Scalar Field Dark Matter Quantum Effects as Dark Energy
, 2009 Some paragraphs in order to clarify the paper and references added.
Tonatiuh Matos
openalex +4 more sources
Creep Characterization of Inconel 718 Lattice Metamaterials Manufactured by Laser Powder Bed Fusion
Advanced Engineering Materials, EarlyView., 2023 Herein, the creep characteristics of additively manufactured Inconel 718 metamaterials are investigated. The creep behavior of metamaterials and the effects of microstructural defects are assessed, and the microstructure defects are accurately captured using Kachanov's creep damage model.
Akash Singh Bhuwal +5 more
wiley +1 more source
Stability of Cauchy horizon in a charged de-Sitter spacetime with dark matter
European Physical Journal C: Particles and Fields, 2023 The violation of strong cosmic censorship (SCC) in RNdS black holes by a minimally coupled neutral massless scalar field has recently been discovered. This paper investigates the stability of the Cauchy horizon of a spherically charged de-Sitter black ...
Xue-Ying Nan, Jia Tan, Jie Jiang
doaj +1 more source
Is Dark Matter a BEC or Scalar Field? [PDF]
Journal of the Korean Physical Society, 2009 This is a brief review on the history of the Bose-Einstein condensate (BEC) or boson star model of galactic dark matter halos, where ultra-light scalar dark matter particles condense in a single BEC quantum state. The halos can be described as a self-gravitating, possibly self-interacting, coherent scalar field.
openaire +4 more sources
Pulsar timing residual induced by ultralight vector dark matter
European Physical Journal C: Particles and Fields, 2020 We study the ultralight vector dark matter with a mass around $$10^{-23}\,\mathrm {eV}$$ 10-23eV . The vector field oscillating coherently on galactic scales induces oscillations of the spacetime metric with a frequency around nHz, which is detectable by
Kimihiro Nomura, Asuka Ito, Jiro Soda
doaj +1 more source
Unifying dark matter, dark energy and inflation with a fuzzy dark fluid [PDF]
, 2020 Scalar fields appear in many cosmological models, in particular in order to provide explanations for dark energy and inflation, but also to emulate dark matter. In this paper, we show that it is possible for a scalar field to replace simultaneously dark matter, dark energy and inflation by assuming the existence of a non-minimal coupling to gravity, a ...
arxiv +1 more source