Quantum theory and Einstein's theory of general relativity are two of the greatest successes in modern physics. Each works ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. An image of a black hole surrounded by matter. Does the secret of quantum gravity lie around ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. An abstract illustration of quantum particles entangling. New research aims to unite gravity with ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

Physicists have long treated space and time as the stage on which quantum particles perform, not as actors in the drama ...

The gravity quantum field is calculated in flat spacetime. The curved classical metric is calculated using the expectation value of the gravity quantum field. At long last, a unified theory combining ...

Researchers at Stevens Institute of Technology and Yale University are initiating a first-of-its-kind experiment designed to detect gravitons, the hypothesized quantum building blocks of gravity.

In a bold step toward solving one of science’s most puzzling problems, researchers have proposed a new way to bring gravity into the same mathematical language as the other forces of nature. While the ...

This episode of the Physics World Weekly podcast features Alex May, whose research explores the intersection of quantum ...

Quantum gravity and field theory represent a frontier where the principles of quantum mechanics are reconciled with Einstein’s description of gravity. Researchers are seeking a consistent framework ...

A new physics paper takes a step toward creating a long-sought "theory of everything" by uniting gravity with the quantum world. However, the new theory remains far from being proven observationally.