Results 41 to 50 of about 41,122 (294)
Universe, 2020 The generalized hybrid metric-Palatini theory of gravity admits a scalar-tensor representation in terms of two interacting scalar fields. We show that, upon an appropriate choice of the interaction potential, one of the scalar fields behaves like dark ...
Paulo M. Sá
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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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Scalar field dark matter with a cosh potential, revisited [PDF]
Journal of Cosmology and Astroparticle Physics, 2019 Dark matter models in which the constituent particle is an ultra-light boson have become part of the mainstream discussion in cosmology and astrophysics.
L. Ureña‐López
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Rotation curves of high-resolution LSB and SPARC galaxies with fuzzy and multistate (ultralight boson) scalar field dark matter [PDF]
, 2017 Cold dark matter (CDM) has shown to be an excellent candidate for the dark matter (DM) of the Universe at large scales, however it presents some challenges at the galactic level. The scalar field dark matter (SFDM), also called fuzzy, wave, Bose-Einstein
T. Bernal +3 more
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A stable finite-volume method for scalar field dark matter [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We describe and test a family of new numerical methods to solve the Schrödinger equation in self-gravitating systems, e.g. Bose–Einstein condensates or ‘fuzzy’/ultra-light scalar field dark matter.
P. Hopkins
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Scalar-field dark energy nonminimally and kinetically coupled to dark matter [PDF]
Physical Review D, 2019 We provide a general framework for studying the dark energy cosmology in which a scalar field ϕ is nonminimally and kinetically coupled to cold dark matter (CDM).
R. Kase, S. Tsujikawa
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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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Triple unification of inflation, dark energy, and dark matter in two-scalar-field cosmology [PDF]
Physical Review D, 2020 A unified description of inflation, dark energy, and dark matter is presented within a two-scalar-field cosmological model. Inflation, assumed to be of the warm type, is driven by one of the scalar fields, which, shortly after the end of the inflationary
P. M. S'a
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Brief History of Ultra-light Scalar Dark Matter Models
EPJ Web of Conferences, 2018 This is a review on the brief history of the scalar field dark matter model also known as fuzzy dark matter, BEC dark matter, wave dark matter, or ultra-light axion. In this model ultra-light scalar dark matter particles with mass m = O(10-22)eV condense
Lee Jae-Weon
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