Gravitational waves (GWs) have a great potential to probe cosmology. We review early
universe sources that can lead to cosmological backgrounds of GWs. We begin by …

Gravitational-wave detection has been pursued relentlessly for over 40 years. With the
imminent operation of a new generation of laser interferometers, it is expected that …

In a light-pulse atom interferometer, we use a tip-tilt mirror to remove the influence of the
Coriolis force from Earth's rotation and to characterize configuration space wave packets …

After an earthquake, the earliest deformation signals are not expected to be carried by the
fastest (P) elastic waves but by the speed-of-light changes of the gravitational field …

Direct detection of gravitational radiation in the audio band is being pursued with a network
of kilometer-scale interferometers (LIGO, Virgo, KAGRA). Several space missions (LISA …

We characterize the performance of a gravimeter and a gravity gradiometer based on the 1
S 0–3 P 0 clock transition of strontium atoms. We use this new quantum sensor to measure …

Density changes in the atmosphere produce a fluctuating gravity field that affects gravity
strainmeters or gravity gradiometers used for the detection of gravitational waves and for …

Recent proposals for space-borne gravitational wave detectors based on atom
interferometry rely on extremely narrow single-photon transition lines as featured by alkaline …

The static and transient deformations produced by earthquakes cause density perturbations
which, in turn, generate immediate, long-range perturbations of the Earth's gravity field …

Although various pieces of indirect evidence about the nature of dark matter have been
collected, its direct detection has eluded experimental searches despite extensive effort. If …