quantum mechanics relativistic quantum mechanics quantum electrodynamics general relativity one of the unsolved problems in physics quantum gravity theory of everything physics electrodynamics gravity
Special relativity can be combined with quantum mechanics to form relativistic quantum mechanics and quantum electrodynamics. How general relativity and quantum mechanics can be unified is one of the unsolved problems in physics; quantum gravity and a "theory of everything", which require a unification including general relativity too, are active and ongoing areas in theoretical research.
