Quantum theory and general relativity have long described the universe with incompatible languages, one speaking in ...

Physicists have chased a unified description of nature for more than a century, yet quantum theory and gravity have ...

A new study suggests that gravity could quantum-entangle particles even if it remained classical.

In his discussion of accelerated motion on page 60 of "The Meaning of Relativity," Albert Einstein made an approximation that allowed him to develop the theory of relativity further. Einstein ...