Results 31 to 40 of about 59,677 (306)
On loop states in loop-quantum gravity [PDF]
Classical and Quantum Gravity, 2007 We explicitly construct and characterize all possible independent loop states in 3+1 dimensional loop quantum gravity by regulating it on a 3-d regular lattice in the Hamiltonian formalism. These loop states, characterized by the (dual) angular momentum quantum numbers, describe SU(2) rigid rotators on the links of the lattice.
Dass, N. D. Hari, Mathur, Manu
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Testing Loop Quantum Gravity from Observational Consequences of Nonsingular Rotating Black Holes. [PDF]
Physical Review Letters, 2020 The lack of rotating black hole models, which are typically found in nature, in loop quantum gravity (LQG) substantially hinders the progress of testing LQG from observations.
Suddhasattwa Brahma +2 more
semanticscholar +1 more source
Loop Quantum Black Hole Extensions Within the Improved Dynamics
Frontiers in Astronomy and Space Sciences, 2021 We continue our investigation of an improved quantization scheme for spherically symmetric loop quantum gravity. We find that in the region where the black hole singularity appears in the classical theory, the quantum theory contains semi-classical ...
Rodolfo Gambini +2 more
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XIVth International Congress on Mathematical Physics, 2006 We describe the canonical approach to quantum gravity and report on the status of its most advanced implementation, Loop Quantum Gravity (LQG).
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Realization of Dirac quantization in loop quantum gravity
Physics Letters B, 2023 The system of gravity coupled to the non-rotational dust field is studied at both classical and quantum levels. The scalar constraint of the system can be written in the form of a true physical Hamiltonian with respect to the dust time.
Xiangdong Zhang, Yongge Ma
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Improved effective dynamics of loop-quantum-gravity black hole and Nariai limit [PDF]
Classical and quantum gravity, 2020 We propose a new model of the spherical symmetric quantum black hole in the reduced phase space formulation. We deparametrize gravity by coupling to the Gaussian dust which provides the material coordinates.
Muxin Han, Hongguang Liu
semanticscholar +1 more source
Keeping matter in the loop in dS3 quantum gravity [PDF]
Journal of High Energy Physics, 2023 We propose a mechanism that couples matter fields to three-dimensional de Sitter quantum gravity. Our construction is based on the Chern-Simons formulation of three-dimensional Euclidean gravity, and it centers on a collection of Wilson loops winding ...
A. Castro +3 more
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Automorphisms in loop quantum gravity [PDF]
Classical and Quantum Gravity, 2009 57 pages, 7 ...
Bahr, Benjamin, Thiemann, Thomas
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International Journal of Modern Physics D, 2014 This paper presents an "in-a-nutshell" yet self-contained introductory review on loop quantum gravity (LQG) — a background-independent, nonperturbative approach to a consistent quantum theory of gravity. Instead of rigorous and systematic derivations, it aims to provide a general picture of LQG, placing emphasis on the fundamental ideas and their ...
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Critical Collapse of a Scalar Field in Semiclassical Loop Quantum Gravity. [PDF]
Physical Review Letters, 2020 We study the collapse in spherical symmetry of a massless scalar field minimally coupled to gravity using the semiclassical equations that are expected from loop quantum gravity.
F. Benítez +4 more
semanticscholar +1 more source