Results 21 to 30 of about 640,772 (343)

Choice of connection in loop quantum gravity [PDF]

open access: greenPhysical Review D, 2001
We investigate the quantum area operator in the loop approach based on the Lorentz covariant hamiltonian formulation of general relativity. We show that there exists a two-parameter family of Lorentz connections giving rise to Wilson lines which are eigenstates of the area operator. For each connection the area spectrum is evaluated. In particular, the
Serguei Y. Alexandrov
openaire   +6 more sources

Relativistic Planck-scale polymer

open access: yesPhysics Letters B, 2017
Polymer quantum mechanics has been studied as a simplified picture that reflects some of the key properties of Loop Quantum Gravity; however, while the fate of relativistic symmetries in Loop Quantum Gravity is still not established, it is usually ...
Amelino-Camelia, Giovanni   +3 more
core   +4 more sources

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

open access: yesUniverse, 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.
AurĂ©lien Barrau   +2 more
doaj   +2 more sources

Loop-Quantum-Gravity Vertex Amplitude [PDF]

open access: greenPhysical Review Letters, 2007
Spinfoam theories are hoped to provide the dynamics of non-perturbative loop quantum gravity. But a number of their features remain elusive. The best studied one -the euclidean Barrett-Crane model- does not have the boundary state space needed for this, and there are recent indications that, consequently, it may fail to yield the correct low-energy $n$-
Engle, Jonathan   +2 more
openaire   +8 more sources

An illustration of 2+1 gravity loop transform troubles [PDF]

open access: yesarXiv, 1993
A nonperturbative approach to quantum gravity that has generated much discussion is the attempt to construct a ``loop representation." Despite it's success in linear quantum theories and a part of 2+1 quantum gravity, it has recently been noticed that ...
Marolf, Donald
core   +2 more sources

Loop quantum gravity and cosmological constant

open access: yesPhysics Letters B, 2021
6 pages, 1 figure; v2, accepted by ...
Xiangdong Zhang, Gaoping Long, Yongge Ma
openaire   +5 more sources

Quantum information in loop quantum gravity

open access: goldJournal of Physics: Conference Series, 2006
RevTex, 5 pages. Proceedings of QG'05, Cala Gonone, 2005 Relations of the coarse-graining and partial tracing are clarified, and the references are ...
Daniel R. Terno
openaire   +4 more sources

Graviton propagator in loop quantum gravity [PDF]

open access: greenClassical and Quantum Gravity, 2006
41 pages, 6 ...
Simone Speziale   +4 more
openaire   +7 more sources

Newtonian gravity in loop quantum gravity [PDF]

open access: yesarXiv, 2010
We apply a recent argument of Verlinde to loop quantum gravity, to conclude that Newton's law of gravity emerges in an appropriate limit and setting. This is possible because the relationship between area and entropy is realized in loop quantum gravity when boundaries are imposed on a quantum spacetime.
openaire   +3 more sources

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