Results 31 to 40 of about 1,342,913 (205)
Towards a quantum notion of covariance in spherically symmetric loop quantum gravity [PDF]
Physical Review D, 2022 The covariance of loop quantum gravity studies of spherically symmetric space-times has recently been questioned. This is a reasonable worry, given that they are formulated in terms of slicing-dependent variables. We show explicitly that the resulting space-times, obtained from Dirac observables of the quantum theory, are covariant in the usual sense ...
Rodolfo Gambini +2 more
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Conformal covariance of the Liouville quantum gravity metric for γ∈(0,2)
Annales de l'Institut Henri Poincaré, Probabilités et Statistiques, 2021 For $\gamma \in (0,2)$, $U\subset \BB C$, and an instance $h$ of the Gaussian free field (GFF) on $U$, the $\gamma$-Liouville quantum gravity (LQG) surface associated with $(U,h)$ is formally described by the Riemannian metric tensor $e^{\gamma h} (dx^2 + dy^2)$ on $U$.
Gwynne, Ewain, Miller, Jason
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Does Quantum Mechanics Clash with the Equivalence Principle – and Does it Matter? [PDF]
, 2010 With an eye on developing a quantum theory of gravity, many physicists have recently searched for quantum challenges to the equivalence principle of general relativity.
Elias Okon +3 more
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The philosophy behind quantum gravity [PDF]
, 2006 This paper investigates some of the philosophical and conceptual issues raised by the search for a quantum theory of gravity. It is critically discussed whether such a theory is necessary in the first place, and how much would be accomplished if it is ...
Zinkernagel, Henrik +2 more
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A new look at Lorentz-covariant loop quantum gravity [PDF]
Physical Review D, 2011 28 pages.
Geiller, Marc +2 more
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Spacetime and the Philosophical Challenge of Quantum Gravity [PDF]
, 2001 We survey some philosophical aspects of the search for a quantum theory of gravity, emphasising how quantum gravity throws into doubt the treatment of spacetime common to the two `ingredient theories' (quantum theory and general relativity), as a 4 ...
Butterfield, Jeremy +3 more
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Gibbsing spacetime: a group field theory approach to equilibrium in quantum gravity
New Journal of Physics, 2018 The symmetries, subtle nature of observables, and lack of a preferred notion of time evolution all make defining a quantum statistical mechanics of general relativity difficult.
Hal M Haggard
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Continuous Symmetries and Approximate Quantum Error Correction
Physical Review X, 2020 Quantum error correction and symmetry arise in many areas of physics, including many-body systems, metrology in the presence of noise, fault-tolerant computation, and holographic quantum gravity.
Philippe Faist +6 more
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Coupling of quantum gravitational field with Riemann and Ricci curvature tensors
European Physical Journal C: Particles and Fields, 2021 The theoretical problem of establishing the coupling properties existing between the classical and quantum gravitational field with the Ricci and Riemann curvature tensors of General Relativity is addressed.
Claudio Cremaschini, Massimo Tessarotto
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, 2012 Quantum gravity--the marriage of quantum physics with general relativity--is bound to contain deep and important lessons for the nature of physical time.
Vistarini, Tiziana +5 more
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