Einstein’s theory of general relativity describes gravity as the curvature of space and time caused by matter and energy.

Richard Feynman, one of the greatest physicists of the 20th century, once said something that should either comfort or terrify you: “Nobody understands quantum mechanics.” This wasn’t a confession of ...

Scientists have uncovered a surprising connection between quantum gravity and an exotic quantum state of matter that could explain why the universe isn’t expanding wildly fast. The study suggests that ...

Add Yahoo as a preferred source to see more of our stories on Google. An abstract illustration of quantum particles entangling. New research aims to unite gravity with quantum physics using a novel ...

Researchers have developed a new quantum theory of gravity which describes gravity in a way that's compatible with the Standard Model of particle physics, opening the door to an improved understanding ...

Add Yahoo as a preferred source to see more of our stories on Google. A new way of explaining gravity could bring us a step closer to resolving the heretofore irresolvable differences it has with ...

Energy conditions are inequalities imposed on the stress–energy tensor that characterise physically reasonable matter in Einstein’s theory of gravitation. In classical general relativity, the null, ...

A seminal paper by Paul Dirac, who relied on mathematical intuition, laid the foundation for quantum electrodynamics. Paul Dirac once said that his theories are “built up from physical concepts which ...

Landauer's principle is a thermodynamics concept also relevant in information theory, which states that erasing one bit of information from an information system results in the dissipation of at least ...

The force we experience most intimately remains the most mysterious. Physicists understand how vast migrations of particles called photons light up our homes, and how swarms of “gluon” particles hold ...

A proposed experiment could shed light on the unknown interplay of quantum theory and general relativity. Quantum theory in curved spacetime can be theoretically understood beyond the limit at which ...