Graviton Bending in Quantum Gravity and Equivalence Principle at Quantum Level

I will talk about the bending of gravitons that pass near a massive object like the Sun, using scattering amplitudes in which the Sun is represented by a massive scalar particle.  This completes previous work on the bending angles of massless spin-0, spin-$\frac{1}{2}$ and spin-1 particles, and provides more evidence for the violation of the equivalence principle at the quantum level, in the sense that the quantum corrections to bending angles for massless particles with different spins are different.  And quantum bending angles for scalar, photon and graviton projectiles under different circumstances will also be discussed.