Results 51 to 60 of about 693,653 (389)
The Cosmological Constant [PDF]
Annual Review of Astronomy and Astrophysics, 1992 50 pages.
openaire +9 more sources
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
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
Gravitation and Cosmology: Principles and Applications of the General Theory of Relativity
, 1973 Preface. Notation. Copyright Acknowledgements. Part One Preliminaries. Part Two the General Theory of Relativity. Part Three Applications of Feneral Relativity. Part Four Formal Developments. Part Five Cosmology. Appendix. Some Useful Numbers. Index.
S. Weinberg, R. Wagoner
semanticscholar +1 more source
Physical Review Letters, 2007 We explore nonlocally modified models of gravity, inspired by quantum loop corrections, as a mechanism for explaining current cosmic acceleration. These theories enjoy two major advantages: they allow a delayed response to cosmic events, here the transition from radiation to matter dominance, and they avoid the usual level of fine tuning; instead ...
Deser, S., Woodard, R. P.
openaire +5 more sources
Emergent cosmology from matrix theory
Journal of High Energy Physics, 2022 Matrix theory is a proposed non-perturbative definition of superstring theory in which space is emergent. We begin a study of cosmology in the context of matrix theory.
Suddhasattwa Brahma +2 more
doaj +1 more source
Testing loop quantum cosmology [PDF]
, 2017 Loop quantum cosmology predicts that quantum gravity effects resolve the big-bang singularity and replace it by a cosmic bounce. Furthermore, loop quantum cosmology can also modify the form of primordial cosmological perturbations, for example by ...
Wilson-Ewing, Edward
core +2 more sources
International Journal of Geometric Methods in Modern Physics, 2014 The possibility has been recently demonstrated to manufacture (nonrelativistic, Hamiltonian) many-body problems which feature an isochronous time evolution with an arbitrarily assigned period T yet mimic with good approximation, or even exactly, any given many-body problem (within a large, physically relevant, class) over times [Formula: see text ...
Briscese F., Calogero F.
openaire +5 more sources
Producing a Scale-Invariant Spectrum of Perturbations in a Hagedorn Phase of String Cosmology [PDF]
Phys.Rev.Lett.97:021302,2006, 2005 We study the generation of cosmological perturbations during the Hagedorn phase of string gas cosmology. Using tools of string thermodynamics we provide indications that it may be possible to obtain a nearly scale-invariant spectrum of cosmological fluctuations on scales which are of cosmological interest today.
arxiv +1 more source
Digital health: A sociomaterial approach
Sociology of Health &Illness, Volume 45, Issue 1, Page 37-53, January 2023., 2023 Abstract The notion of digital health often remains an empty signifier, employed strategically for a vast array of demands to attract investments and legitimise reforms. Rather scarce are attempts to develop digital health towards an analytic notion that provides avenues for understanding the ongoing transformations in health care.
Benjamin Marent, Flis Henwood
wiley +1 more source