Testing gravity with cold atom interferometry: results and prospects

Abstract Atom interferometers have been developed in the last three decades as new powerful tools to investigate gravity. They were used for measuring gravity acceleration, gradient, and gravity-field curvature, determination of gravitational constant, investigation at microscopic distances, test equivalence principle general relativity theories modified gravity, probe interplay between quantum physics models, search dark matter energy, they proposed detectors observation waves. Here I describe past ongoing experiments with an outlook on what think are main prospects this field potential physics.