Results 41 to 50 of about 8,643,173 (282)
Interpreting DESI's evidence for evolving dark energy [PDF]
The latest results on baryon acoustic oscillations from DESI (Dark Energy Spectroscopic Instrument), when combined with cosmic microwave background and supernova data, show indications of a deviation from a cosmological constant in favour of evolving ...
Marina Cortês, A. Liddle
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Generalized entropies and corresponding holographic dark energy models [PDF]
Using Tsallis statistics and its relation with Boltzmann entropy, the Tsallis entropy content of black holes is achieved, a result in full agreement with a recent study (Mejrhit and Ennadifi in Phys Lett B 794:24, 2019). In addition, employing Kaniadakis
H. Moradpour+2 more
semanticscholar +1 more source
DARK ENERGY WITHOUT DARK ENERGY [PDF]
32 pages, 8 figures; Invited contribution to appear in the Proceedings of the Dark2007 Conference, Sydney, Australia, Sept 2007, eds H. Klapdor-Kleingrothaus and G.F. Lewis, (World Scientific, Singapore, 2008)
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On dark matter and dark energy
The dark matter hypothesis was created to explain the reason for the preservation of stellar clusters from dispersion. The weak point of this hypothesis is the great age of space, which is 13.8 billion years.
V. Yu. Stetsenko, A. V. Stetsenko
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submitted to AJ Corresponding Authors H. T. Diehl (diehl@fnal.gov)
K. Patton+121 more
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The Cosmological Constant and Dark Energy [PDF]
Physics invites the idea that space contains energy whose gravitational effect approximates that of Einstein's cosmological constant, Lambda: nowadays the concept is termed dark energy or quintessence.
P. Peebles, Bharat Ratra
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A comparison of optimisation algorithms for high-dimensional particle and astrophysics applications
Optimisation problems are ubiquitous in particle and astrophysics, and involve locating the optimum of a complicated function of many parameters that may be computationally expensive to evaluate.
The DarkMachines High Dimensional Sampling Group+20 more
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Dynamical dark energy after Planck CMB final release and H0 tension [PDF]
In this article we compare a variety of well-known dynamical dark energy models using the cosmic microwave background measurements from the 2018 Planck legacy and 2015 Planck data releases, the baryon acoustic oscillations measurements and the local ...
Weiqiang Yang+4 more
semanticscholar +1 more source
I have been working on the fundamental laws of physics for a long time. During this time, I realized that gravity does not work like Newtonian and this misleads us into Dark Matter. The relationship between distance and gravitational force varies with distance.
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