Results 31 to 40 of about 531,343 (389)
KiDS-1000 cosmology: Cosmic shear constraints and comparison between two point statistics [PDF]
Astronomy & Astrophysics, 2020 We present cosmological constraints from a cosmic shear analysis of the fourth data release of the Kilo-Degree Survey (KiDS-1000), which doubles the survey area with nine-band optical and near-infrared photometry with respect to previous KiDS analyses ...
M. Asgari +23 more
semanticscholar +1 more source
Modified Gravity and Cosmology [PDF]
, 2021 General Relativity and the $\Lambda$CDM framework are currently the standard lore and constitute the concordance paradigm. Nevertheless, long-standing open theoretical issues, as well as possible new observational ones arising from the explosive ...
E. Saridakis +52 more
semanticscholar +1 more source
Scientific Reports, 2012 Prediction and control of the dynamics of complex networks is a central problem in network science. Structural and dynamical similarities of different real networks suggest that some universal laws might accurately describe the dynamics of these networks, albeit the nature and common origin of such laws remain elusive.
Krioukov, Dmitri +5 more
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Tachyon field in loop cosmology
Physics Letters B, 2020 The evolutionary pictures of tachyon field in modified loop cosmology have been investigated. We present the dynamical behavior of the tachyon field associated with an exponential potential and find that the pre-inflation dynamics are very similar in ...
Kui Xiao
doaj +1 more source
Journal of High Energy Physics, 2019 Abstract We show that the potential of Nambu-Goldstone bosons can have two or more local minima e.g. at antipodal positions in the vacuum manifold. This happens in many models of composite Higgs and of composite Dark Matter. Trigonometric potentials lead to unusual features, such as symmetry non-restoration at high temperature.
Di Luzio L. +3 more
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Late-time cosmology with phantom dark-energy in f(Q) gravity [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 Motivated by the exciting features and a recent proposed general form of the function of non-metricity scalar Q, we investigate the cosmological implications in f(Q) gravity, through the resulting effective dark energy sector, extracting analytical ...
Andreas Lymperis
semanticscholar +1 more source
String cosmology in Bianchi I space-time [PDF]
, 2021 Some cosmological solutions of massive strings are obtained in Bianchi I space-time following the techniques used by Letelier and Stachel. A class of solutions corresponds to string cosmology associated with/without a magnetic field and the other class ...
Asit Banerjee, A. Sanyal, S. Chakraborty
semanticscholar +1 more source
Cosmological constant in spinfoam cosmology [PDF]
Physical Review D, 2011 4 pages, 2 ...
Carlo Rovelli +3 more
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COSMOLOGY IN ISLAM, CONSTRUCTING ISLAMIZATION OF NATURE SCIENCE
Jurnal Al-Dustur, 2022 Cosmology is one of the philosophical and scientific objects that become attention in Greek philosophers, especially Aristotle. However, with the times, this cosmology was found in The Qur’an, exactly in the concept of the sky and earth creation which ...
Muhammad Fiqih Cholidi, Safiya Fadlulah
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Comptes Rendus. Physique, 2017 In the approach of Causal Dynamical Triangulations (CDT), quantum gravity is obtained as a scaling limit of a non-perturbative path integral over space-times whose causal structure plays a crucial role in the construction. After some general considerations about the relation between quantum gravity and cosmology, we examine which aspects of CDT are ...
Glaser, L., Loll, R., Loll, R.
openaire +2 more sources