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Cosmological Issues for Revised Canonical Quantum Gravity [PDF]
Int.J.Mod.Phys.D12:1445-1458,2003, 2003 In a recent work we presented a reformulation of the canonical quantum gravity, based on adding the so-called kinematical term to the gravity-matter action; this revised approach leads to a self-consistent canonical quantization of the 3-geometries, referred to the external time as provided via the added term.
Giovanni Montani
arxiv +3 more sources
An overview of canonical quantum gravity [PDF]
Int.J.Theor.Phys.38:1051-1061,1999, 1998 This is a summary of a talk delivered at the workshop ``Quantum gravity in the Southern Cone II''. We present a very brief review of current results on canonical quantization of general relativity using Ashtekar's variables and loop quantization.
Jorge Pullin
arxiv +3 more sources
Modifications to gravitational wave equation from canonical quantum gravity [PDF]
European Physical Journal C: Particles and Fields, 2020 It is expected that the quantum nature of spacetime leaves its imprint in all semiclassical gravitational systems, at least in certain regimes, including gravitational waves.
Andrea Dapor, Klaus Liegener
doaj +2 more sources
Canonical Quantum Gravity, Constructive QFT, and Renormalisation
Frontiers in Physics, 2020 The canonical approach to quantum gravity has been put on a firm mathematical foundation in the recent decades. Even the quantum dynamics can be rigorously defined, however, due to the tremendously non-polynomial character of the gravitational ...
Thomas Thiemann
doaj +3 more sources
Asymptotically safe — canonical quantum gravity junction [PDF]
Journal of High Energy PhysicsThe canonical (CQG) and asymptotically safe (ASQG) approach to quantum gravity share to be both non-perturbative programmes. However, apart from that they seem to differ in several aspects such as: 1.
T. Thiemann
doaj +2 more sources
Lorentz violations in canonical quantum gravity [PDF]
, 2001 This is a summary of a talk given at the CP01 meeting on possible Lorentz anomalies in canonical quantum gravity. It briefly reviews some initial explorations on the subject that have taken place recently, and should be only be seen as a short pointer to the literature on the subject, mostly for outsiders.
Rodolfo Gambini, Jorge Pullin
arxiv +3 more sources
Let Loop Quantum Gravity and Affine Quantum Gravity Examine Each Other [PDF]
Journal of High Energy Physics, Gravitation and Cosmology > Vol.7
No.3, July 2021, 2021 Loop Quantum Gravity is widely developed using canonical quantization in an effort to find the correct quantization for gravity. Affine quantization, which is like canonical quantization augmented bounded in one orientation, e.g., a strictly positive coordinate. We open discussion using canonical and affine quantizations for two simple problems so each
arxiv +1 more source
Are there ALPs in the asymptotically safe landscape?
Journal of High Energy Physics, 2022 We investigate axion-like particles (ALPs) in the context of asymptotically safe gravity-matter systems. The ALP-photon interaction, which facilitates experimental searches for ALPs, is a dimension-5-operator.
Gustavo P. de Brito +2 more
doaj +1 more source
Universe, 2022 Time in quantum gravity is not a well-defined notion despite its central role in the very definition of dynamics. Using the formalism of quantum geometrodynamics, we briefly review the problem and illustrate it with two proposed solutions.
Claus Kiefer, Patrick Peter
doaj +1 more source
Mass Hierarchies and Quantum Gravity Constraints in DKMM‐refined KKLT
Fortschritte der Physik, Volume 71, Issue 1, January 2023., 2023 Abstract We carefully revisit the mass hierarchies for the KKLT scenario with an uplift term from an anti D3‐brane in a strongly warped throat. First, we derive the bound resulting from what is usually termed “the throat fitting into the bulk” directly from the Klebanov‐Strassler geometry.
Ralph Blumenhagen +2 more
wiley +1 more source