Results 31 to 40 of about 110,473 (324)
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
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Testing the mean field theory of scalar field dark matter
SciPost Physics Proceedings, 2023 Scalar field dark matter offers an interesting alternative to the traditional WIMP dark matter picture. Astrophysical and cosmological simulations are useful to constraining the mass of the dark matter particle in this model. This is particularly true at
Andrew Eberhardt, Alvaro Zamora, Michael Kopp, Tom Abel
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Dark sector impact on gravitational collapse of an electrically charged scalar field [PDF]
, 2015 Dark matter and dark energy are dominating components of the Universe. Their presence affects the course and results of processes, which are driven by the gravitational interaction.
Nakonieczna, Anna +2 more
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Scalar field as dark matter in the universe
Classical and Quantum Gravity, 2000 4 pages REVTeX, 1 eps figure. Minor changes.
Matos, Tonatiuh +2 more
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Scalar-field theory of dark matter [PDF]
International Journal of Modern Physics A, 2014 We develop a theory of dark matter based on a previously proposed picture, in which a complex vacuum scalar field makes the universe a superfluid, with the energy density of the superfluid giving rise to dark energy, and variations from vacuum density giving rise to dark matter. We formulate a nonlinear Klein–Gordon equation to describe the superfluid,
Huang, Kerson, Xiong, Chi, Zhao, Xiaofei
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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
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Conformally coupled dark matter [PDF]
, 1996 Dark matter is obtained from a scalar field coupled conformally to gravitation; the scalar being a relict of Dirac's gauge function. This conformally coupled dark matter includes a gas of very light ($m\approx 2.25\times 10^{-34} eV$) neutral bosons ...
A. Tyson +20 more
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COMPLEX SCALAR FIELD DARK MATTER ON GALACTIC SCALES [PDF]
Modern Physics Letters A, 2014 The nature of the cosmological dark matter (DM) remains elusive. Recent studies have advocated the possibility that DM could be composed of ultra-light, self-interacting bosons, forming a Bose–Einstein condensate (BEC) in the very early Universe. We consider models which are charged under a global U(1)-symmetry such that the DM number is conserved. It
Rindler-Daller, Tanja, Shapiro, Paul R.
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Scale-invariant scalar field dark matter through the Higgs portal
Journal of High Energy Physics, 2018 We discuss the dynamics and phenomenology of an oscillating scalar field coupled to the Higgs boson that accounts for the dark matter in the Universe. The model assumes an underlying scale invariance such that the scalar field only acquires mass after ...
Catarina Cosme +2 more
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Dark Matter from Scalar Field Fluctuations [PDF]
Physical Review Letters, 2019 5 pages, 2 figures.
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