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Testing the Master Constraint Programme for Loop Quantum Gravity V. Interacting Field Theories [PDF]

open access: yes, 2004
This is the final fifth paper in our series of five in which we test the Master Constraint Programme for solving the Hamiltonian constraint in Loop Quantum Gravity.
Ashtekar A   +43 more
core   +1 more source

Casimir effect in a quantum space-time [PDF]

open access: yes, 2014
We apply quantum field theory in quantum space-time techniques to study the Casimir effect for large spherical shells. As background we use the recently constructed exact quantum solution for spherically symmetric vacuum space-time in loop quantum ...
Gambini, Rodolfo   +2 more
core   +3 more sources

Loop Quantum Gravity and Observations [PDF]

open access: yes, 2017
Quantum gravity has long been thought to be completely decoupled from experiments or observations. Although it is true that smoking guns are still missing, there are now serious hopes that quantum gravity phenomena might be tested. We review here some possible ways to observe loop quantum gravity effects either in the framework of cosmology or in ...
Barrau, A., Grain, J.
openaire   +3 more sources

Emergence of string-like physics from Lorentz invariance in loop quantum gravity [PDF]

open access: yes, 2014
We consider a quantum field theory on a spherically symmetric quantum space time described by loop quantum gravity. The spin network description of space time in such a theory leads to equations for the quantum field that are discrete.
Gambini, Rodolfo, Pullin, Jorge
core   +3 more sources

Loop Quantum Gravity [PDF]

open access: yesAstronomische Nachrichten, 2011
AbstractIn this talk, I give a short general introduction to Loop Quantum Gravity (LQG), beginning with some motivations for quantizing General Relativity, listing various attempts and then focusing on the case of LQG. (© 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
openaire   +3 more sources

Prelude to Simulations of Loop Quantum Gravity on Adiabatic Quantum Computers

open access: yesFrontiers in Astronomy and Space Sciences, 2021
The article addresses the possibility of implementing spin network states, used in the loop quantum gravity approach to Planck scale physics on an adiabatic quantum computer.
Jakub Mielczarek
doaj   +1 more source

Quaternion-Loop Quantum Gravity [PDF]

open access: yesFoundations of Physics, 2009
It is shown that the Riemannian curvature of the 3-dimensional hypersurfaces in space-time, described by the Wilson loop integral, can be represented by a quaternion quantum operator induced by the SU(2) gauge potential, thus providing a justification for quaternion quantum gravity at the Tev energy scale.
F. S. Carvalho   +2 more
openaire   +3 more sources

Loop Quantum Gravity and Quantum Information

open access: yes, 2023
We summarize recent developments at the interface of quantum gravity and quantum information, and discuss applications to the quantum geometry of space in loop quantum gravity. In particular, we describe the notions of link entanglement, intertwiner entanglement, and boundary spin entanglement in a spin-network state.
Bianchi, Eugenio, Livine, Etera R.
openaire   +3 more sources

Loop Quantum Cosmology, Modified Gravity and Extra Dimensions

open access: yesUniverse, 2016
Loop quantum cosmology (LQC) is a framework of quantum cosmology based on the quantization of symmetry reduced models following the quantization techniques of loop quantum gravity (LQG).
Xiangdong Zhang
doaj   +1 more source

Quasinormal modes of a massive scalar field nonminimally coupled to gravity in the spacetime of self-dual black hole

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
In this work, we investigate the quasinormal modes for a massive scalar field with a nonminimal coupling with gravity in the spacetime of a loop quantum black hole, known as the self-dual black hole.
J. S. Santos, M. B. Cruz, F. A. Brito
doaj   +1 more source

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