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Phenomenological Quantum Gravity [PDF]
AIP Conference Proceedings, 2007 Planck scale physics represents a future challenge, located between particle physics and general relativity. The Planck scale marks a threshold beyond which the old description of spacetime breaks down and conceptually new phenomena must appear. In the last years, increased efforts have been made to examine the phenomenology of quantum gravity, even if
Lee Smolin, Sabine Hossenfelder
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Gravity in the quantum lab [PDF]
Advances in Physics: X, 2017 25 pages, 2 figures, based on an invited review for Advances in Physics: X, I. Fuentes previously published as I. Fuentes-Guridi and I.
Richard Howl +3 more
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Emergence of Weak Coupling at Large Distance in Quantum Gravity. [PDF]
Physical Review Letters, 2018 The Ooguri-Vafa swampland conjectures claim that in any consistent theory of quantum gravity, when venturing to large distances in scalar field space, a tower of particles will become light at a rate that is exponential in the field-space distance.
B. Heidenreich, M. Reece, Tom Rudelius
semanticscholar +1 more source
And what if gravity is intrinsically quantic ?
, 2009 Since the early days of search for a quantum theory of gravity the attempts have been mostly concentrated on the quantization of an otherwise classical system.
Barcelo C +5 more
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Clocks and rods in Jackiw-Teitelboim quantum gravity [PDF]
Journal of High Energy Physics, 2019 We specify bulk coordinates in Jackiw-Teitelboim (JT) gravity using a boundary-intrinsic radar definition. This allows us to study and calculate exactly diff-invariant bulk correlation functions of matter-coupled JT gravity, which are found to satisfy ...
Andreas Blommaert +2 more
semanticscholar +1 more source
Universe, 2019 We use the method of the Lewis-Riesenfeld invariant to analyze the dynamical properties of the Mukhanov-Sasaki Hamiltonian and, following this approach, investigate whether we can obtain possible candidates for initial states in the context of inflation ...
Max Joseph Fahn +2 more
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Coherent States for Fractional Powers of the Harmonic Oscillator Hamiltonian
Universe, 2021 Inspired by special and general relativistic systems that can have Hamiltonians involving square roots or more general fractional powers, in this article, we address the question of how a suitable set of coherent states for such systems can be obtained ...
Kristina Giesel, Almut Vetter
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The complete spectrum of the area from recoupling theory in loop quantum gravity
, 1996 We compute the complete spectrum of the area operator in the loop representation of quantum gravity, using recoupling theory. This result extends previous derivations, which did not include the ``degenerate'' sector, and agrees with the recently computed
Ashtekar A +22 more
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Quantum Gravity on a Quantum Computer? [PDF]
Foundations of Physics, 2013 EPR-type measurements on spatially separated entangled spin qubits allow one, in principle, to detect curvature. Also the entanglement of the vacuum state is affected by curvature. Here, we ask if the curvature of spacetime can be expressed entirely in terms of the spatial entanglement structure of the vacuum.
Achim Kempf, Achim Kempf
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