Results 51 to 60 of about 531,343 (389)
Planck evidence for a closed Universe and a possible crisis for cosmology [PDF]
Nature Astronomy, 2019 The recent Planck Legacy 2018 release has confirmed the presence of an enhanced lensing amplitude in cosmic microwave background power spectra compared with that predicted in the standard Λ cold dark matter model, where Λ is the cosmological constant.
Eleonora Di Valentino +2 more
semanticscholar +1 more source
The Cosmological Constant [PDF]
Annual Review of Astronomy and Astrophysics, 1992 50 pages.
openaire +10 more sources
Backreaction in Cosmology [PDF]
Frontiers in Astronomy and Space Sciences, 2021 In this review, we investigate the question of backreaction in different approaches to cosmological perturbation theory, and with a special focus on quantum theoretical aspects. By backreaction we refer here to the effects of matter field or cosmological inhomogeneities on the homogeneous dynamical background degrees of freedom of cosmology.
S. Schander, S. Schander, T. Thiemann
openaire +7 more sources
MultiNest: an efficient and robust Bayesian inference tool for cosmology and particle physics [PDF]
, 2008 We present further development and the first public release o f our multimodal nested sampling algorithm, called MULTINEST. This Bayesian inference tool calculates the evidence, with an associated error estimate, and produces posterior s amples from ...
F. Feroz, M. Hobson, M. Bridges
semanticscholar +1 more source
Long range interactions in cosmology: implications for neutrinos [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 Cosmology is well suited to study the effects of long range interactions due to the large densities in the early Universe. In this article, we explore how the energy density and equation of state of a fermion system diverge from the commonly assumed ...
I. Esteban, J. Salvado
semanticscholar +1 more source
The concept of fractal cosmos, I: Anaxagoras’ cosmology [PDF]
Serbian Astronomical Journal, 2001 The concept of a fractal cosmos occupies a prominent position in the modern cosmology. We trace the development of this concept from the presocratic Greece to the present state of affairs.
Grujić P.V.
doaj +1 more source
Post-inflationary brane cosmology [PDF]
, 2001 The brane cosmology has invoked new challenges to the usual Big Bang cosmology. In this paper we present a brief account on thermal history of the post-inflationary brane cosmology. We have realized that it is not obvious that the post-inflationary brane
Affleck +63 more
core +2 more sources
Particle Physics and Inflationary Cosmology [PDF]
Physics today, 1987 With the invention of unified theories of strong, weak, electromagnetic and gravitational interactions, elementaryparticle physics has entered a very interesting and unusual stage of its development.
Andrei Linde
semanticscholar +1 more source
Journal of High Energy Physics, 2020 A quantum extremal island suggests that a region of spacetime is encoded in the quantum state of another system, like the encoding of the black hole interior in Hawking radiation.
Thomas Hartman +2 more
semanticscholar +1 more source
Quantum Mechanics in the Light of Quantum Cosmology [PDF]
, 2018 We sketch a quantum mechanical framework for the universe as a whole. Within that framework we propose a program for describing the ultimate origin in quantum cosmology of the quasiclassical domain of familiar experience and for characterizing the ...
M. Gell-Mann, J. Hartle
semanticscholar +1 more source