Spacetime foam: a review

S Carlip - Reports on Progress in Physics, 2023 - iopscience.iop.org
More than 65 years ago, John Wheeler suggested that quantum uncertainties of the metric
would be of order one at the Planck scale, leading to large fluctuations in spacetime …

Analogue gravity

C Barcelo, S Liberati, M Visser - Living reviews in relativity, 2011 - Springer
Analogue gravity is a research programme which investigates analogues of general
relativistic gravitational fields within other physical systems, typically but not exclusively …

Gravitational decoherence

A Bassi, A Großardt, H Ulbricht - Classical and Quantum Gravity, 2017 - iopscience.iop.org
We discuss effects of loss of coherence in low energy quantum systems caused by or related
to gravitation, referred to as gravitational decoherence. These effects, resulting from random …

[HTML][HTML] The fifth-order post-Newtonian Hamiltonian dynamics of two-body systems from an effective field theory approach

J Blümlein, A Maier, P Marquard, G Schäfer - Nuclear Physics B, 2022 - Elsevier
Within an effective field theory method to general relativity, we calculate the fifth-order post–
Newtonian (5PN) Hamiltonian dynamics also for the tail terms, extending earlier work on the …

Radiating black holes in the novel 4D Einstein–Gauss–Bonnet gravity

SG Ghosh, SD Maharaj - Physics of the Dark Universe, 2020 - Elsevier
Abstract Recently Glavan and Lin (2020) formulated a novel Einstein–Gauss–Bonnet gravity
in which the Gauss–Bonnet coupling has been rescaled as α∕(D− 4) and the 4 D theory is …

Gravitationally induced decoherence vs space-time diffusion: testing the quantum nature of gravity

J Oppenheim, C Sparaciari, B Šoda… - Nature …, 2023 - nature.com
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 …

Testing the foundation of quantum physics in space via Interferometric and non-interferometric experiments with mesoscopic nanoparticles

G Gasbarri, A Belenchia, M Carlesso, S Donadi… - Communications …, 2021 - nature.com
Quantum technologies are opening novel avenues for applied and fundamental science at
an impressive pace. In this perspective article, we focus on the promises coming from the …

The weak field limit of quantum matter back-reacting on classical spacetime

I Layton, J Oppenheim, A Russo… - Journal of High Energy …, 2023 - Springer
A bstract Consistent coupling of quantum and classical degrees of freedom exists so long as
there is both diffusion of the classical degrees of freedom and decoherence of the quantum …

Generating black holes in 4D Einstein–Gauss–Bonnet gravity

SG Ghosh, R Kumar - Classical and Quantum Gravity, 2020 - iopscience.iop.org
In recent times there is a surge of interest in constructing Einstein–Gauss–Bonnet (EGB)
gravity, in the limit D→ 4, of the D-dimensional EGB gravity. Interestingly, the static …

Relativistic brownian motion

J Dunkel, P Hänggi - Physics Reports, 2009 - Elsevier
Over the past one hundred years, Brownian motion theory has contributed substantially to
our understanding of various microscopic phenomena. Originally proposed as a …