Results 91 to 100 of about 1,530,241 (273)

Isotropic Loop Quantum Cosmology [PDF]

, 2002
Isotropic models in loop quantum cosmology allow explicit calculations, thanks largely to a completely known volume spectrum, which is exploited in order to write down the evolution equation in a discrete internal time.
, Ames W F, Ashtekar A, Ashtekar A, Ashtekar A, Ashtekar A, Baez J C, Bahcall J N, Bojowald M, Bojowald M, Bojowald M, Bojowald M, Bojowald M, Bojowald M, Bojowald M, Gurovich V Ts, Hawking S W, Immirzi G, Kuchar K V, Martin Bojowald, Rovelli C, Thiemann T, Thiemann T, Thiemann T, Veneziano G, Witten E   +25 more
core   +3 more sources

(b,v)-type variables for black to white hole transitions in effective loop quantum gravity

Physics Letters B, 2021
Quantum gravity effects in effective models of loop quantum gravity, such as loop quantum cosmology, are encoded in the choice of so-called polymerisation schemes.
Norbert Bodendorfer, Fabio M. Mele, Johannes Münch   +2 more
doaj  

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

Holographic spacetime, black holes and quantum error correcting codes: a review

European Physical Journal C: Particles and Fields, 2022
This article reviews the progress in our understanding of the reconstruction of the bulk spacetime in the holographic correspondence from the dual field theory including an account of how these developments have led to the reproduction of the Page curve ...
Tanay Kibe, Prabha Mandayam, Ayan Mukhopadhyay   +2 more
doaj   +1 more source

Quantum Reduced Loop Gravity and the foundation of Loop Quantum Cosmology [PDF]

, 2016
Quantum Reduced Loop Gravity is a promising framework for linking Loop Quantum Gravity and the effective semiclassical dynamics of Loop Quantum Cosmology.
Emanuele Alesci, F. Cianfrani
semanticscholar   +1 more source

Te Vacancy‐Driven Anomalous Transport in ZrTe5 and HfTe5

Advanced Physics Research, EarlyView.
Less is more! Recent discoveries in topological quantum materials have rekindled excitement for direct observation of quantum anomalies in a condensed matter physics laboratory, which is historically intractable in particle and cosmological physics. Using atomistic modeling this study sheds light on the source of the anomalous transport properties that
Elizabeth A. Peterson, Christopher Lane, Jian‐Xin Zhu   +2 more
wiley   +1 more source

Classical and quantum cosmology of minimal massive bigravity

Physics Letters B, 2016
In a Friedmann–Robertson–Walker (FRW) space–time background we study the classical cosmological models in the context of recently proposed theory of nonlinear minimal massive bigravity.
F. Darabi, M. Mousavi
doaj   +1 more source

Quantum Models for Cosmology

Universe, 2022
This Special Issue presents a collection of review and original papers on various aspects and applications of quantum cosmological models [...]
Jean-Pierre Gazeau, Przemysław Małkiewicz   +1 more
doaj   +1 more source

Phenomenology with fluctuating quantum geometries in loop quantum cosmology [PDF]

, 2016
The goal of this paper is to probe phenomenological implications of large fluctuations of quantum geometry in the Planck era, using cosmology of the early universe.
I. Agulló, A. Ashtekar, Brajesh Gupt
semanticscholar   +1 more source

The perturbed universe in the deformed algebra approach of Loop Quantum Cosmology

, 2016
Loop quantum cosmology is a tentative approach to model the universe down to the Planck era where quantum gravity settings are needed. The quantization of the universe as a dynamical space-time is inspired by Loop Quantum Gravity ideas. In addition, loop
Grain, J.
core   +2 more sources