Classical theories of gravity produce entanglement. [PDF]
NatureThe unification of gravity and quantum mechanics remains one of the most profound open questions in science. With recent advances in quantum technology, an experimental idea first proposed by Richard Feynman1 is now regarded as a promising route to ...
Aziz J, Howl R.
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Effective action of dilaton gravity as the classical double copy of Yang-Mills theory [PDF]
Physical Review D, 2019 We compute the classical effective action of color charges moving along worldlines by integrating out the Yang-Mills gauge field to next-to-leading order in the coupling.
Jan Plefka +2 more
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An Ultralocal Classical and Quantum Gravity Theory [PDF]
Journal of High Energy Physics Gravitation and Cosmology, 2020 An ultralocal form of any classical field theory eliminates all spatial derivatives in its action functional, e.g., in its Hamiltonian functional density.
John R. Klauder
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Gravitationally induced decoherence vs space-time diffusion: testing the quantum nature of gravity. [PDF]
Nat Commun, 2023 We consider two interacting systems when one is treated classically while the other system remains quantum. Consistent dynamics of this coupling has been shown to exist, and explored in the context of treating space-time classically.
Oppenheim J +3 more
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Renormalizable acausal theories of classical gravity coupled with interacting quantum fields [PDF]
, 2007 We prove the renormalizability of various theories of classical gravity coupled with interacting quantum fields. The models contain vertices with dimensionality greater than four, a finite number of matter operators and a finite or reduced number of ...
Damiano Anselmi, Milenko Halat
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Classical Weyl transverse gravity [PDF]
, 2016 We study various classical aspects of the Weyl transverse (WTDiff) gravity in a general space-time dimension. First of all, we clarify a classical equivalence among three kinds of gravitational theories, those are, the conformally invariant scalar tensor
I. Oda
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Classical evolution and quantum generation in generalized gravity theories including string corrections and tachyons: Unified analyses [PDF]
, 2005 We present cosmological perturbation theory based on generalized gravity theories including string theory correction terms and a tachyonic complication.
Jai-chan Hwang, Hyerim Noh
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Entropy-current for dynamical black holes in Chern-Simons theories of gravity [PDF]
Journal of High Energy Physics, 2023 We construct an entropy current and establish a local version of the classical second law of thermodynamics for dynamical black holes in Chern-Simons (CS) theories of gravity.
Ishan Deo, Prateksh Dhivakar, N. Kundu
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Reconstructing wormhole solutions in curvature based Extended Theories of Gravity [PDF]
The European Physical Journal C, 2021 Static and spherically symmetric wormhole solutions can be reconstructed in the framework of curvature based Extended Theories of Gravity. In particular, extensions of the General Relativity, in metric and curvature formalism give rise to modified ...
Vittorio De Falco +3 more
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Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A ∗ [PDF]
Classical and quantum gravity, 2022 Horizon-scale images of black holes (BHs) and their shadows have opened an unprecedented window onto tests of gravity and fundamental physics in the strong-field regime.
S. Vagnozzi +3 more
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