Results 11 to 20 of about 6,479 (312)

Classical theories of gravity produce entanglement [PDF]

Nature
Abstract The 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 Feynman 1 is now regarded as a promising route to testing this ...
Richard Howl
exaly   +5 more sources

Supersymmetric backgrounds in (1 + 1) dimensions and inhomogeneous field theory

Journal of High Energy Physics, 2023
We find a (1 + 1)-dimensional metric solution for a background hosting various supersymmetric field theories with a single non-chiral real supercharge. This supersymmetric background is globally hyperbolic even though it contains a naked null singularity.
Jeongwon Ho, O-Kab Kwon, Sang-A Park, Sang-Heon Yi   +3 more
doaj   +1 more source

Superluminality in DHOST theory with extra scalar

Journal of High Energy Physics, 2021
We consider DHOST Ia theory interacting gravitationally with an additional conventional scalar field minimally coupled to gravity. At the linearized level of perturbations about cosmological background, we find that in the presence of a slowly rolling ...
S. Mironov, V. Rubakov, V. Volkova
doaj   +1 more source

Classical gravity coupled to Liouville theory [PDF]

Nuclear Physics B, 1993
24 pages (important changes)
Mazzitelli, Francisco D., Mohammedi, Noureddine   +1 more
openaire   +3 more sources

Recursion in the classical limit and the neutron-star Compton amplitude

Journal of High Energy Physics, 2023
We study the compatibility of recursive techniques with the classical limit of scattering amplitudes through the construction of the classical Compton amplitude for general spinning compact objects.
Kays Haddad
doaj   +1 more source

Late time acceleration in Palatini gravity

Journal of High Energy Physics, 2022
We investigate the effect of the quadratic correction αR 2 and non-minimal coupling ξϕ 2 R on a quintessence model with an exponential potential V(ϕ) = M 4exp(−λϕ) in the Palatini formulation of gravity.
Ignatios Antoniadis, Anthony Guillen, Kyriakos Tamvakis   +2 more
doaj   +1 more source

Conformal wave expansions for flat space amplitudes

Journal of High Energy Physics, 2021
The extended BMS algebra contains a conformal subgroup that acts on the celestial sphere as SO(1, 3). It is of interest to perform mode expansions of free fields in Minkowski spacetime that realize this symmetry in a simple way.
Chang Liu, David A. Lowe
doaj   +1 more source

3D gravity with dust: Classical and quantum theory [PDF]

Physical Review D, 2015
We study the Einstein gravity and dust system in three spacetime dimensions as an example of a non-perturbative quantum gravity model with local degrees of freedom. We derive the Hamiltonian theory in the dust time gauge and show that it has a rich class of exact solutions.
Husain, Viqar, Ziprick, Jonathan
openaire   +2 more sources

Classical Teichmüller theory and (2+1) gravity [PDF]

Physics Letters B, 1998
11 pages ...
BENEDETTI, RICCARDO, GUADAGNINI, ENORE
openaire   +3 more sources

To Half-Be or Not To Be?

Journal of High Energy Physics, 2023
It has recently been argued that half degrees of freedom could emerge in Lorentz and parity invariant field theories, using a non-linear Proca field theory dubbed Proca-Nuevo as a specific example.
Claudia de Rham, Sebastian Garcia-Saenz, Lavinia Heisenberg, Victor Pozsgay, Xinmiao Wang   +4 more
doaj   +1 more source