Results 1 to 10 of about 2,110,870 (239)
Realization of a complete Stern-Gerlach interferometer: Toward a test of quantum gravity. [PDF]
Sci Adv, 2021 A full-loop Stern-Gerlach atom interferometer is realized, opening perspectives to examine the quantum nature of gravity. The Stern-Gerlach effect, found a century ago, has become a paradigm of quantum mechanics.
Margalit Y +10 more
europepmc +3 more sources
Quantum gravity phenomenology at the dawn of the multi-messenger era—A review [PDF]
Progress in Particle and Nuclear Physics, 2021 The exploration of the universe has recently entered a new era thanks to the multi-messenger paradigm, characterized by a continuous increase in the quantity and quality of experimental data that is obtained by the detection of the various cosmic ...
A. Addazi +159 more
semanticscholar +1 more source
A short review of loop quantum gravity [PDF]
Reports on progress in physics. Physical Society, 2021 An outstanding open issue in our quest for physics beyond Einstein is the unification of general relativity (GR) and quantum physics. Loop quantum gravity (LQG) is a leading approach toward this goal.
A. Ashtekar, Eugenio Bianchi
semanticscholar +1 more source
Locally Mediated Entanglement in Linearized Quantum Gravity. [PDF]
Physical Review Letters, 2022 The current interest in laboratory detection of entanglement mediated by gravity was sparked by an information-theoretic argument: entanglement mediated by a local field certifies that the field is not classical.
Marios Christodoulou +5 more
semanticscholar +1 more source
Massive quantum systems as interfaces of quantum mechanics and gravity [PDF]
Reviews of Modern Physics, 2023 The traditional view from particle physics is that quantum gravity effects should only become detectable at extremely high energies and small length scales.
S. Bose +9 more
semanticscholar +1 more source
Quantum Gravity in 30 Questions [PDF]
Proceedings of Corfu Summer Institute 2021 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2021), 2022 Quantum gravity is the missing piece in our understanding of the fundamental interactions today. Given recent observational breakthroughs in gravity, providing a quantum theory for what lies beyond general relativity is more urgent than ever.
R. Loll +3 more
semanticscholar +1 more source
Lorentzian Quantum Gravity and the Graviton Spectral Function. [PDF]
Physical Review Letters, 2021 We present the first direct and nonperturbative computation of the graviton spectral function in quantum gravity. This is achieved with the help of a novel Lorentzian renormalization group approach, combined with a spectral representation of correlation ...
Jannik Fehre +3 more
semanticscholar +1 more source
Solvable models of quantum black holes: a review on Jackiw–Teitelboim gravity [PDF]
Living Reviews in Relativity, 2022 We review recent developments in Jackiw–Teitelboim gravity. This is a simple solvable model of quantum gravity in two dimensions (that arises e.g. from the s-wave sector of higher dimensional gravity systems with spherical symmetry).
T. Mertens, G. Turiaci
semanticscholar +1 more source
Quantum gravity at low energies. [PDF]
Studies in history and philosophy of science, 2021 I provide a conceptually-focused presentation of 'low-energy quantum gravity' (LEQG), the effective quantum field theory obtained from general relativity and which provides a well-defined theory of quantum gravity at energies well below the Planck scale.
D. Wallace
semanticscholar +1 more source
Classical and quantum gravity with fractional operators [PDF]
Classical and quantum gravity, 2021 Following the same steps made for a scalar field in a parallel publication, we propose a class of perturbative theories of quantum gravity based on fractional operators, where the kinetic operator of the graviton is made of either fractional derivatives ...
G. Calcagni
semanticscholar +1 more source