One problem in modern physics is that this phenomenon cannot be renormalized in quantum field theory, and this interaction is carried by a spin-2 gauge boson. Particles only affected by this force move along geodesics due to 
One problem in modern physics is that this phenomenon cannot be renormalized in quantum field theory, and this interaction is carried by a spin-2 gauge boson. Particles only affected by this force move along geodesics due to its equivalence principle, and a constant associated with this force was measured with a torsion balance in the Cavendish experiment. In general relativity, this force results from the curvature of spacetime, and it is inversely proportional to the square of the distance between two bodies. For 10 points, name this force that causes an acceleration of about 9.81 meters per second squared on Earth, first described by Isaac Newton.
One problem in modern physics is that this phenomenon cannot be renormalized in quantum field theory, and this interaction is carried by a spin-2 gauge boson.