Results 61 to 70 of about 11,844 (268)
Gravitational production of completely dark photons with nonminimal couplings to gravity
Journal of High Energy PhysicsDark photons are a theorized massive spin-1 particle which can be produced via various mechanisms, including cosmological gravitational particle production (GPP) in the early universe.
Christian Capanelli +3 more
doaj +1 more source
Journal of High Energy Physics, 2018 Macroscopic nuggets of quark matter were proposed several decades ago as a candidate for dark matter. The formation of these objects in the early universe requires the QCD phase transition to be first order — a requirement that is not satisfied in the ...
Yang Bai, Andrew J. Long
doaj +1 more source
Cosmological Relativity: A New Theory of Cosmology
, 2000 A general-relativistic theory of cosmology, the dynamical variables of which are those of Hubble's, namely distances and redshifts, is presented. The theory describes the universe as having a three-phase evolution with a decelerating expansion followed by a constant and an accelerating expansion, and it predicts that the universe is now in the latter ...
Behar, Silvia, Carmeli, Moshe
openaire +2 more sources
Journal of Cosmology and Astroparticle Physics, 2016 33 pages, 4 ...
Kehagias, A., Riotto, A.
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New constraints on the postglacial evolution of Lago Maggiore, Northern Italy
Journal of Quaternary Science, EarlyView.ABSTRACT Lago Maggiore is situated in an overdeepened valley reach at the southern margin of the European Alps, and its thick sediment infill allows the reconstruction of the postglacial valley and lake evolution. We study here the sedimentary succession in the lower Ossola Valley, which is infilled by ~500 m of deposits. In a marginal position, a core
Lukas Gegg +9 more
wiley +1 more source
Review of the Salpausselkä ice‐marginal formations in Finland
Journal of Quaternary Science, EarlyView.ABSTRACT Extensive Salpausselkä ice‐marginal formations were deposited in southern and eastern Finland during the Weichselian deglaciation. These comprise three major ridges (I, II, and III Salpausselkäs) and their eastern counterparts (Tuupovaara, Koitere, and Pielisjärvi), together forming laterally continuous ice‐marginal formations extending ...
Jukka‐Pekka Palmu +3 more
wiley +1 more source
Cosmological implications of Kalb-Ramond-like particles
Journal of High Energy PhysicsThe Kalb-Ramond field is an antisymmetric, rank-two tensor field which most notably appears in the context of string theory, but has largely been unexplored in the context of cosmology.
Christian Capanelli +3 more
doaj +1 more source
Astronomy & AstrophysicsDark matter dominates the matter content of the Universe, and its properties can be constrained through large-scale structure probes such as the cross-correlation between the unresolved gamma-ray background (UGRB) and weak gravitational lensing.
Zhang Shiyang +16 more
doaj +1 more source
Graviton fluctuations erase the cosmological constant
Physics Letters B, 2017 Graviton fluctuations induce strong non-perturbative infrared renormalization effects for the cosmological constant. The functional renormalization flow drives a positive cosmological constant towards zero, solving the cosmological constant problem ...
C. Wetterich
doaj +1 more source
Late Quaternary lake filling and drying in northern Australia's largest freshwater lake
Journal of Quaternary Science, EarlyView.ABSTRACT Lake Woods, Jurrkulu, is northern Australia's largest freshwater lake filled today in strong Indo–Australian summer monsoons (IASM) to maximum depths of ~5 m. On the western margins of the lake, two large arcuate ridges occur 20 to 40 m above the lake floor and inset within these are other mid‐elevation lake deposits, such as depositional ...
Tim J. Cohen +14 more
wiley +1 more source