Results 121 to 130 of about 2,110,870 (239)
Black holes in loop quantum gravity [PDF]
Reports on progress in physics. Physical Society, 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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Fermions in quantum gravity [PDF]
Physical Review Letters, 1994 We study the quantum fermions+gravity system, that is, the gravitational counterpart of QED. We start from the standard Einstein-Weyl theory, reformulated in terms of Ashtekar variables; and we construct its non- perturbative quantum theory by extending the loop representation of general relativity.
Morales-Técotl, Hugo A., Rovelli, Carlo
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Aspects of asymptotic safety for quantum gravity [PDF]
Physical Review D, 2018 We study fixed points of quantum gravity with renormalisation group methods, and a procedure to remove certain convergence-limiting poles from the flow.
K. Falls, D. Litim, J. Schröder
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Journal of High Energy PhysicsAbstract We present the manifestly covariant canonical operator formalism of a Weyl invariant (or equivalently, a locally scale invariant) gravity whose classical action consists of the well-known conformal gravity and Weyl invariant scalar-tensor gravity, on the basis of the Becchi-Rouet-Stora-Tyupin (BRST) formalism.
Ichiro Oda, Misaki Ohta
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QUANTUM GRAVITY AND TURBULENCE [PDF]
International Journal of Modern Physics D, 2010 We apply recent advances in quantum gravity to the problem of turbulence. Adopting the AdS/CFT approach we propose a string theory of turbulence that explains the Kolmogorov scaling in 3 + 1 dimensions and the Kraichnan and Kolmogorov scalings in 2 + 1 dimensions.
Jejjala, Vishnu +3 more
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Dimension and dimensional reduction in quantum gravity [PDF]
Universe, 2017 A number of very different approaches to quantum gravity contain a common thread, a hint that spacetime at very short distances becomes effectively two dimensional. I review this evidence, starting with a discussion of the physical meaning of ‘dimension’
S. Carlip
semanticscholar +1 more source
Toward a Background Independent Quantum Theory of Gravity
, 2004 Any canonical quantum theory can be understood to arise from the compatibility of the statistical geometry of distinguishable observations with the canonical Poisson structure of Hamiltonian dynamics. This geometric perspective offers a novel, background
Banks T. +5 more
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Cosmological effective Hamiltonian from full loop quantum gravity dynamics
Physics Letters B, 2018 The concept of effective dynamics has proven successful in LQC, a loop-inspired quantization of cosmological spacetimes. We apply the same idea of its derivation in LQC to the full theory, by computing the expectation value of the scalar constraint with ...
Andrea Dapor, Klaus Liegener
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, 2010 The literature on quantum-gravity-inspired scenarios for the quantization of spacetime has so far focused on particle-physics-like studies. This is partly justified by the present limitations of our understanding of quantum-gravity theories, but we here ...
Amelino-Camelia G. +8 more
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Quantum Fluctuations of the Gravitational Field and Propagation of Light: a Heuristic Approach
, 2000 Quantum gravity is quite elusive at the experimental level; thus a lot of interest has been raised by recent searches for quantum gravity effects in the propagation of light from distant sources, like gamma ray bursters and active galactic nuclei, and ...
Amelino-Camelia G +11 more
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