During the latter part of the 20th century, string theory was put forward as a unifying theory of physics foundations. String ...

At the core of this mystery is a deeper puzzle—how quantum mechanics reconciles with classical frameworks like general relativity ... equation, the foundation of quantum theory.

Several physicists have proposed theories that try to unite quantum mechanics with Einstein’s general theory ... modified ...

By modifying Einstein's theory of general ... small distances, general relativity should be modified by an infinite series of additional terms in its equations. "In quantum gravity, one considers ...

this novel theory could also finally unite Albert Einstein's general relativity with the quantum realm. Since the beginning of the 20th century, Einstein's theory of general relativity has been ...