Results 61 to 70 of about 426 (131)

Editorial: Loop Quantum Cosmology

Frontiers in Astronomy and Space Sciences, 2022
Beatriz Elizaga Navascués, Guillermo A. Mena Marugán, Francesca Vidotto, Francesca Vidotto   +3 more
doaj   +1 more source

A Status Report on the Phenomenology of Black Holes in Loop Quantum Gravity: Evaporation, Tunneling to White Holes, Dark Matter and Gravitational Waves

Universe, 2018
The understanding of black holes in loop quantum gravity is becoming increasingly accurate. This review focuses on the possible experimental or observational consequences of the underlying spinfoam structure of space-time.
Aurélien Barrau, Killian Martineau, Flora Moulin   +2 more
doaj   +1 more source

Switching Internal Times and a New Perspective on the `Wave Function of the Universe’

Universe, 2019
Despite its importance in general relativity, a quantum notion of general covariance has not yet been established in quantum gravity and cosmology, where, given the a priori absence of coordinates, it is necessary to replace classical frames with ...
Philipp A. Höhn
doaj   +1 more source

A novel link between Wheeler-DeWitt quantization and (effective) loop quantum cosmology

Physics Letters B
It is shown that several prescriptions for the effective continuum limit of the flat Friedmann-Lemaitre-Robertson-Walker loop quantum cosmology can be understood as the exact classical limit of the Wheeler-DeWitt quantization of certain dynamical systems,
Abraham Espinoza-García
doaj   +1 more source

Loop Quantum Gravity Phenomenology: Linking Loops to Observational Physics

Symmetry, Integrability and Geometry: Methods and Applications, 2012
Research during the last decade demonstrates that effects originating on the Planck scale are currently being tested in multiple observational contexts.
Florian Girelli, Franz Hinterleitner, Seth A. Major   +2 more
doaj   +1 more source

Efficiently evaluating loop integrals in the EFTofLSS using QFT integrals with massive propagators

Journal of High Energy Physics
We develop a new way to analytically calculate loop integrals in the Effective Field Theory of Large Scale-Structure. Previous available methods show severe limitations beyond the one-loop power spectrum due to analytical challenges and computational and
Charalampos Anastasiou, Diogo P. L. Bragança, Leonardo Senatore, Henry Zheng   +3 more
doaj   +1 more source

Loop Quantum Gravity Vacuum with Nondegenerate Geometry

Symmetry, Integrability and Geometry: Methods and Applications, 2012
In loop quantum gravity, states of the gravitational field turn out to be excitations over a vacuum state that is sharply peaked on a degenerate spatial geometry.
Hanno Sahlmann, Tim Koslowski
doaj   +1 more source

On the Origin of Time and the Universe: A Modern Reappraisal through Quantum Cosmology, the Kalam Argument and Contemporary Scholarship

MetaScientia: Journal of the History and Philosophy of Science
This article reconsiders the origin of the universe by bringing quantum cosmology, the Kalam Cosmological Argument, and Islamic philosophical theology into dialogue while distinguishing more sharply between scientific description, philosophical ...
Sameer Al-Khawaja
doaj   +1 more source

Unitary evolution and cosmic acceleration in Loop Quantum Cosmology

Physics Letters B
Loop quantum cosmology was shown to interpolate between de Sitter and FLRW Universe phases through a bounce by including Euclidean and Lorentzian terms of the Hamiltonian constraint with weight one -that corresponding to classical General Relativity ...
Omar Gallegos, Tonatiuh Matos, Hugo A. Morales-Técotl   +2 more
doaj   +1 more source

Gravity and Cosmology in Kaniadakis Statistics: Current Status and Future Challenges. [PDF]

Entropy (Basel), 2022
Luciano GG.
europepmc   +1 more source