Results 21 to 30 of about 1,722,078 (332)
Physical Review D, 2020 We present a novel source of dark energy, which is motivated by the prevalence of hidden sectors in string theory models and is consistent with all of the proposed swampland conjectures. Thermal effects hold a light hidden sector scalar at a point in field space that is not a minimum of its zero temperature potential.
Edward Hardy, Susha Parameswaran
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A comparison of optimisation algorithms for high-dimensional particle and astrophysics applications
Journal of High Energy Physics, 2021 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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On dark matter and dark energy
Литьë и металлургия, 2020 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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DARK ENERGY WITHOUT DARK ENERGY [PDF]
Dark Matter in Astroparticle and Particle Physics, 2008 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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Metadetection Weak Lensing for the Vera C. Rubin Observatory
The Open Journal of Astrophysics, 2023 Forthcoming astronomical imaging surveys will use weak gravitational lensing shear as a primary probe to study dark energy, with accuracy requirements at the 0.1% level.
Erin S. Sheldon +4 more
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The Astronomical Journal, 2015 submitted to AJ Corresponding Authors H. T. Diehl (diehl@fnal.gov)
K. Patton +121 more
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, 2023 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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Dark energy in the dark ages [PDF]
Astroparticle Physics, 2006 Non-negligible dark energy density at high redshifts would indicate dark energy physics distinct from a cosmological constant or ``reasonable'' canonical scalar fields. Such dark energy can be constrained tightly through investigation of the growth of structure, with limits of \la2% of total energy density at z\gg1 for many models.
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Dark energy and dark gravity: theory overview [PDF]
General Relativity and Gravitation, 2007 21 pages 10 figures Overview article for the dark energy issue of GRG revised to match version in print (minor typos corrected 4 refs. added)
Durrer, R., Maartens, Roy
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