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Cosmological constraints on scalar field dark matter [PDF]
International Journal of Modern Physics D, 2021 This paper aims to put constraints on the parameters of the Scalar Field Dark Matter (SFDM) model, when dark matter is described by a free real scalar field filling the whole universe, plus a cosmological constant term. By using a compilation of 51 [Formula: see text] data and 1048 Supernovae data from Panteon, a mass range for the scalar field was ...
A. A. Escobal +2 more
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Can dark matter be a scalar field? [PDF]
Journal of Cosmology and Astroparticle Physics, 2016 In this paper we study a real scalar field as a possible candidate to explain the dark matter in the universe. In the context of a free scalar field with quadratic potential, we have used Union 2.1 SN Ia observational data jointly with a Planck prior over the dark matter density parameter to set a lower limit on the dark matter mass as $m\geq0.12H_0 ...
Jesus, J. F. +3 more
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Analytical treatment of small scales matter power spectrum in coupled scalar field (CSF) cosmology [PDF]
EPJ Web of Conferences, 2020 In this paper, we reconstruct matter power spectrum of a cosmological model in which coupled scalar field acts as dark energy. The coupled scalar field (CSF) dark energy we propose here is a generalized model of quintessence, k-essence or phantom coupled
Mulki Fargiza A. M., Wulandari Hesti
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Scalar field as dark matter in the universe [PDF]
Classical and Quantum Gravity, 2000 4 pages REVTeX, 1 eps figure. Minor changes.
L. Arturo Ureña-López +2 more
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Unifying dark energy and dark matter with a scalar field [PDF]
EAS Publications Series, 2006 The standard model of cosmology considers the existence of two components of unknown nature, ``dark matter'' and ``dark energy'', which determine the cosmological evolution. Their nature remains unknown, and other models can also be considered. In particular, it may be possible to reinterpret the recent cosmological observations so that the Universe ...
Alexandre Arbey
openalex +4 more sources
Scalar field (wave) dark matter [PDF]
The Fourteenth Marcel Grossmann Meeting, 2017 Recent high-quality observations of dwarf and low surface brightness (LSB) galaxies have shown that their dark matter (DM) halos prefer flat central density profiles. On the other hand the standard cold dark matter model simulations predict a more cuspy behavior.
Tonatiuh Matos, Victor H. Robles
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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,
Xiaofei Zhao, Kerson Huang, Chi Xiong
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UNIFIED DARK MATTER IN SCALAR FIELD COSMOLOGIES [PDF]
Modern Physics Letters A, 2007 Considering the general Lagrangian of k-essence models, we study and classify them through variables connected to the fluid equation of state parameter wκ. This allows one to find solutions around which the scalar field describes a mixture of dark matter and cosmological constant-like dark energy, an example being the purely kinetic model proposed by ...
BERTACCA, DANIELE +2 more
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Semi‐supervised classification of fundus images combined with CNN and GCN
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Purpose Diabetic retinopathy (DR) is one of the most serious complications of diabetes, which is a kind of fundus lesion with specific changes. Early diagnosis of DR can effectively reduce the visual damage caused by DR. Due to the variety and different morphology of DR lesions, automatic classification of fundus images in mass screening can ...
Sixu Duan +8 more
wiley +1 more source
A transient inflammatory response contributes to oxaliplatin neurotoxicity in mice
Annals of Clinical and Translational Neurology, Volume 9, Issue 12, Page 1985-1998, December 2022., 2022 Abstract Objectives Peripheral neuropathy is a relevant dose‐limiting adverse event that can affect up to 90% of oncologic patients with colorectal cancer receiving oxaliplatin treatment. The severity of neurotoxicity often leads to dose reduction or even premature cessation of chemotherapy.
Aina Calls +9 more
wiley +1 more source