scholarly journals Covariance in models of loop quantum gravity: Spherical symmetry

2015 ◽  
Vol 92 (4) ◽  
Author(s):  
Martin Bojowald ◽  
Suddhasattwa Brahma ◽  
Juan D. Reyes
Keyword(s):  
Quantum Gravity ◽  
Spherical Symmetry ◽  
Loop Quantum Gravity

scholarly journals A quantum reduction to spherical symmetry in loop quantum gravity

2015 ◽  
Vol 747 ◽  
pp. 18-21 ◽  
Author(s):  
N. Bodendorfer ◽  
J. Lewandowski ◽  
J. Świeżewski
Keyword(s):  
Quantum Gravity ◽  
Spherical Symmetry ◽  
Loop Quantum Gravity ◽  
Quantum Reduction

Singularity avoidance, lattices, and quantum gravity

2008 ◽  
Vol 86 (4) ◽  
pp. 583-586
Author(s):  
V Husain
Keyword(s):  
Quantum Mechanics ◽  
Scalar Field ◽  
Quantum Gravity ◽  
Spherical Symmetry ◽  
Quantum Cosmology ◽  
Loop Quantum Gravity ◽  
Curvature Singularity ◽  
Singularity Avoidance ◽  
General Lattice ◽  
Coulomb Singularity

An ingredient in recent discussions of curvature singularity avoidance in quantum gravity is the “inverse scale factor” operator in quantum cosmology, and its generalizations to field theoretic models such as scalar-field collapse in spherical symmetry. I describe a general lattice origin of this idea, and show how it applies to the Coulomb singularity in quantum mechanics. The example demonstrates that a discretized Schrodinger equation is computationally equivalent to the so-called polymer quantization derived loop quantum gravity. This applies also to lattice discretized forms of the Wheeler–deWitt equation.PACS Nos.: 04.60.–m, 04.60.Ds, 04.70.Dy

scholarly journals Review on hermiticity of the volume operators in Loop Quantum Gravity

2019 ◽  
Vol 51 (5) ◽  
Author(s):  
S. Ariwahjoedi ◽  
I. Husin ◽  
I. Sebastian ◽  
F. P. Zen
Keyword(s):  
Quantum Gravity ◽  
Loop Quantum Gravity

scholarly journals Quantum gravity: A brief history of ideas and some prospects

2015 ◽  
Vol 24 (11) ◽  
pp. 1530028 ◽  
Author(s):  
Steven Carlip ◽  
Dah-Wei Chiou ◽  
Wei-Tou Ni ◽  
Richard Woodard
Keyword(s):  
Black Hole ◽  
String Theory ◽  
Quantum Gravity ◽  
Loop Quantum Gravity ◽  
Black Hole Thermodynamics ◽  
History Of Ideas ◽  
Foreseeable Future ◽  
Gravitational Effects ◽  
History Of

We present a bird's-eye survey on the development of fundamental ideas of quantum gravity, placing emphasis on perturbative approaches, string theory, loop quantum gravity (LQG) and black hole thermodynamics. The early ideas at the dawn of quantum gravity as well as the possible observations of quantum gravitational effects in the foreseeable future are also briefly discussed.

scholarly journals The length operator in Loop Quantum Gravity

2009 ◽  
Vol 807 (3) ◽  
pp. 591-624 ◽  
Author(s):  
Eugenio Bianchi
Keyword(s):  
Quantum Gravity ◽  
Loop Quantum Gravity
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