J. connor, Content Marketing executive, MA, Minsk,Poland
Answered on Feb 08, 2019
This is a theory still being developed in physics that attempts to take account of both quantum mechanics and general relativity. If a successful description of quantum gravity could be achieved, then this might amount to a 'theory of everything' - no small matter!
Quantum gravity is an overall term for such combinational theories, ie attempts to unify gravity with the other fundamental forces of physics. It usually amounts to proposing the existence of a theoretical entity, a graviton, which is a virtual particle that mediates the gravitational force.