Results 11 to 20 of about 2,808 (218)
Inflationary Cosmology in Modified Gravity Theories [PDF]
Symmetry, 2015 We review inflationary cosmology in modified gravity such as R2 gravity with its extensions in order to generalize the Starobinsky inflation model. In particular, we explore inflation realized by three kinds of effects: modification of gravity, the quantum anomaly, and the R2 term in loop quantum cosmology.
Kazuharu Bamba +2 more
exaly +4 more sources
Relaxing the TCC bound on inflationary cosmology? [PDF]
Eur Phys J C Part Fields, 2020 We demonstrate that the strict upper bounds on the energy scale of inflation and on the tensor-to-scalar ratio can be somewhat relaxed if we assume that – after an initial period of slow rolling when scales probed today in CMB experiments exit the Hubble
Kamali V, Brandenberger R.
europepmc +2 more sources
Physics Reports, 2000 I give a general review of the history of inflationary cosmology and of its present status.
Andrei Linde
exaly +3 more sources
Quantum entanglement in inflationary cosmology
European Physical Journal C: Particles and Fields, 2020 We investigate the time-dependent entanglement entropy in the AdS space with a dS boundary which represents an expanding spacetime. On this time-dependent spacetime, we show that the Ryu–Takayanagi formula, which is usually valid in the static spacetime,
Seoktae Koh +3 more
doaj +2 more sources
Inflationary cosmology: theory and phenomenology
Classical and Quantum Gravity, 2002 This article gives a brief overview of some of the theory behind the inflationary cosmology, and discusses prospects for constraining inflation using observations. Particular care is given to the question of falsifiability of inflation or of subsets of inflationary models.
Andrew R Liddle (16045385)
openaire +3 more sources
INFLATIONARY COSMOLOGY FROM NONCOMMUTATIVE GEOMETRY [PDF]
International Journal of Modern Physics A, 1996 In the framework of the Connes-Lott model based on noncommutative geometry, the basic features of a gauge theory in the presence of gravity are reviewed, in order to show the possible physical relevance of this scheme for inflationary cosmology. These models naturally contain at least two scalar fields, interacting with each other whenever more than ...
LIZZI F +3 more
openaire +6 more sources
Navigating Permanent Underdetermination in Dark Energy and Inflationary Cosmology [PDF]
Philosophy of PhysicsWe identify troubling cases of so-called “permanent underdetermination” in both dark energy and inflationary cosmology. We bring to bear (a) a taxonomy of possible responses to underdetermination, and (b) an understanding of both dark energy and ...
William J. Wolf, James Read
doaj +2 more sources
Inflationary solutions in quantum cosmology [PDF]
Classical and Quantum Gravity, 1988 22 pages, plain-tex, published in Classical and Quantum Gravity, volume 5, year 1988, pages 937 ...
ESPOSITO G, PLATANIA G
openaire +5 more sources
UniverseIn this Editorial to the Special Issue “The Friedmann Cosmology: A Century Later”, we consider an outstanding character of Friedmann’s prediction of Universe expansion, which laid the foundation of modern cosmology.
Galina L. Klimchitskaya +2 more
doaj +2 more sources
Epistemic Justification and Methodological Luck in Inflationary Cosmology. [PDF]
Br J Philos Sci, 2019 I present a recent historical case from cosmology---the story of inflationary cosmology---and on its basis argue that solving explanatory problems can be a reliable method for making progress in science.
McCoy CD.
europepmc +2 more sources