gravity

Two experiments test Einstein’s gravity at quantum scale

In a pair of advances reported this month, physicists have tested Einstein's equivalence principle in ways never before attempted — one team by measuring the quantum phase of a freely falling atom, the other by building an exotic particle beam…

Physicists observe Einstein’s gravity in the quantum realm for the first time

An international team of physicists has directly observed a gravitational effect predicted by Einstein's equivalence principle operating at the quantum scale for the first time, providing a rare experimental bridge between two of physics' most successful yet incompatible theories.

Two new experiments confirm Einstein’s gravity principle holds at quantum scale

Two independent experiments published this week in Science Advances have reinforced one of the central pillars of Einstein's general relativity, showing that the equivalence principle — the idea that gravity treats all objects the same — extends into the quantum…

Scientists measure gravity’s effect on a falling quantum object for the first time

An international team of physicists has for the first time directly measured how gravity affects the quantum properties of a freely falling atom, confirming that Einstein's equivalence principle holds in the quantum realm. The results, published Wednesday in Science Advances,…