Advances in Physics, Mathematics and Applied Science

Quantum Gravity

The term "quantum gravity" refers to theories that try to unify gravity with other fundamental forces of physics (which are already unified together). It proposes a virtual particle called a graviton as a theoretical entity that mediates the gravitational pull.

Quantum gravity may be able to provide answers to some of the universe's most fundamental issues. Quantum effects, for example, play a role near black holes, which are so massive that even light emitted from within a specific radius, the black hole's event horizon, cannot escape their gravitational attraction.

Rather than a theory, the term "quantum gravity" refers to an issue. At various phases of development, several areas of research propose prospective solutions to the problem. These hypothetical quantum-gravity theories are viewed as either competing study directions or contributions to the common goal of finding the physically correct theory.