Results 1 to 10 of about 58,314 (301)
Choice of connection in loop quantum gravity [PDF]
Physical 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
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Black holes in loop quantum gravity [PDF]
Reports on Progress in Physics, 2017 This is a review of results on black hole physics in the context of loop quantum gravity. The key feature underlying these results is the discreteness of geometric quantities at the Planck scale predicted by this approach to quantum gravity.
Alejandro Perez
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Particle Scattering in Loop Quantum Gravity [PDF]
Physical Review Letters, 2005 We devise a technique for defining and computing n-point functions in the context of a background-independent gravitational quantum field theory. We construct a tentative implementation of this technique in a perturbatively-finite loop/spinfoam model.
Leonardo Modesto, Carlo Rovelli
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On gonihedric loops and quantum gravity [PDF]
Journal of Physics A: Mathematical and General, 2006 We present an analysis of the gonihedric loop model, a reformulation of the two dimensional gonihedric spin model, using two different techniques. First, the usual regular lattice statistical physics problem is mapped onto a height model and studied analytically.
D. Espriu, Alberto Prats‐Galino
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Loop quantum gravity and cosmological constant
Physics Letters B, 2021 A one-parameter regularization freedom of the Hamiltonian constraint for loop quantum gravity is analyzed. The corresponding spatially flat, homogenous and isotropic model includes the two well-known models of loop quantum cosmology as special cases. The
Xiangdong Zhang, Gaoping Long, Yongge Ma
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Quantum information in loop quantum gravity
Journal 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
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Loop-Quantum-Gravity Vertex Amplitude [PDF]
Physical 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 $n$-
Jonathan Engle +2 more
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A Status Report on the Phenomenology of Black Holes in Loop Quantum Gravity: Evaporation, Tunneling to White Holes, Dark Matter and Gravitational Waves [PDF]
Universe, 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.
Aurélien Barrau +2 more
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The Proca field in loop quantum gravity [PDF]
The Eleventh Marcel Grossmann Meeting, 2007 15 pages.
Gábor Helesfai
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Peculiar properties in quasinormal spectra from loop quantum gravity effect [PDF]
Physical Review D, 2023 We investigate the quasi-normal mode (QNM) spectra for scalar and electromagnetic fields over a covairant loop quantum gravity black hole (LQG-BH). For the fundamental modes, the LQG effect reduces the oscillations in the scalar field, however it induces
Guoyang Fu +4 more
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