Results 121 to 130 of about 8,643,173 (282)
Classical and Quantum Gravity, 2015 We study the classical dynamics of a non-abelian Higgs theory coupled to gravity in an isotropic and homogeneous Universe. For non-minimal coupling, this theory leads to a model of cosmic inflation that is very attractive due to its simplicity and consistency with the latest experimental data.
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Why we need to see the dark matter to understand the dark energy
, 2007 The cosmological concordance model contains two separate constituents which interact only gravitationally with themselves and everything else, the dark matter and the dark energy.
Hu W +6 more
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European Physical Journal C: Particles and Fields, 2020 We consider a dark energy scenario driven by a scalar field $$\phi $$ ϕ with a pseudo-Nambu–Goldstone boson (pNGB) type potential $$V(\phi )=\mu ^4 \left( 1+ \mathrm{cos}(\phi /f) \right) $$ V ( ϕ ) = μ 4 1 + cos ( ϕ / f ) .
Upala Mukhopadhyay +2 more
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, 2009 12 pages, 8 figures, Summary of talk given at the XXIV International Symposium on Lepton Photon Interactions at High Energies, Hamburg Germany, August ...
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Thermodynamic parametrization of dark energy [PDF]
Physics of the Dark Universe, 2022 S. Capozziello +2 more
semanticscholar +1 more source
The Open Journal of AstrophysicsHigh-fidelity simulated astronomical images are an important tool in developing and measuring the performance of image-processing algorithms, particularly for high precision measurements of cosmic shear -- correlated distortions of images of distant ...
Claire-Alice Hébert +4 more
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Dark Energy: The Shadowy Reflection of Dark Matter?
Entropy, 2016 In this article, we review a series of recent theoretical results regarding a conventional approach to the dark energy (DE) concept. This approach is distinguished among others for its simplicity and its physical relevance.
Kostas Kleidis, Nikolaos K. Spyrou
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This paper investigates the dynamic interplay between dark energy and dark matter using an optimized energy cycle framework. Observational data from the Planck mission’s cosmic microwave background (CMB) measurements at frequencies such as 30 GHz and 100 GHz are integrated into the model to validate predictions.
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The Astrophysical JournalThe standard cosmological model is in the midst of a stress test, thanks to the tension between supernova-based measurements of the Hubble constant H _0 and inferences of its values from cosmic microwave background (CMB) anisotropies.
Kazem Rezazadeh +2 more
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Halo Mass Functions in Early Dark Energy Cosmologies
, 2008 We examine the linear density contrast at collapse time, $\delta_c$ for large-scale structure in dynamical dark energy cosmologies, including models with early dark energy.
Bartelmann +29 more
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