Results 51 to 60 of about 8,643,173 (282)
Physics Letters B, 2003 Velocity-dependent interactions in a fundamental-string dominated universe lead quite naturally, with reasonable assumptions on initial conditions, to an accelerating expanding universe without assuming the existence of a cosmological constant. This result also holds generically for a universe dominated by moving extremal black holes, owing to a ...
Ramzi R. Khuri, Ramzi R. Khuri
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Resolving the Hubble tension with new early dark energy [PDF]
, 2020 New Early Dark Energy (NEDE) is a component of vacuum energy at the electron volt scale, which decays in a first order phase transition shortly before recombination [arXiv:1910.10739].
Florian Niedermann, M. Sloth
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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, Ruth, Maartens, Roy
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Physics Reports, 2017 We review the paradigm of holographic dark energy (HDE), which arises from a theoretical attempt of applying the holographic principle (HP) to the dark energy (DE) problem. Making use of the HP and the dimensional analysis, we derive the general formula of the energy density of HDE.
Shuang Wang, Yi Wang, Miao Li
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Shedding light on dark matter-dark energy interactions [PDF]
Physical Review D, 2020 The emergence of an increasingly strong tension between the Hubble rate inferred from early and late time observations has reinvigorated interest in non-standard scenarios, with the aim of reconciling these measurements.
Matteo Lucca, D. C. Hooper
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Early Dark Energy can Resolve the Hubble Tension. [PDF]
Physical Review Letters, 2018 Early dark energy (EDE) that behaves like a cosmological constant at early times (redshifts z≳3000) and then dilutes away like radiation or faster at later times can solve the Hubble tension.
V. Poulin +3 more
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Soundness of dark energy properties [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 Type Ia Supernovae (SNeIa) used as standardizable candles have been instrumental in the discovery of cosmic acceleration, usually attributed to some form of dark energy (DE).
E. D. Valentino +3 more
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On the geometry of dark energy [PDF]
Classical and Quantum Gravity, 2005 Experimental evidence suggests that we live in a spatially flat, accelerating universe composed of roughly one-third of matter (baryonic + dark) and two-thirds of a negative-pressure dark component, generically called dark energy. The presence of such energy not only explains the observed accelerating expansion of the Universe but also provides the ...
J. M. F. Maia +3 more
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The Dark Energy Survey: Data Release 1 [PDF]
Astrophysical Journal Supplement Series, 2018 We describe the first public data release of the Dark Energy Survey, DES DR1, consisting of reduced single-epoch images, co-added images, co-added source catalogs, and associated products and services assembled over the first 3 yr of DES science ...
T. Abbott +201 more
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