Quantum gravity

Description of gravity using discrete values

Quantum gravity (QG) is a field of theoretical physics that seeks unification of the theory of gravity with the principles of quantum mechanics. It deals with environments in which neither gravitational nor quantum effects can be ignored, such as in the vicinity of black holes or similar compact astrophysical objects, as well as in the early stages of the universe moments after the Big Bang. Three of the four fundamental interactions of nature are described within the framework of quantum mechanics and quantum field theory: the electromagnetic interaction, the strong interaction, and the weak interaction; this leaves gravity as the only interaction that has not been fully accommodated.

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