Specific example: the very first one from the wiki page, namely the equivalence principle, together with (also in that very first example) the fact that particl

Specific example: the very first one from the wiki page, namely the equivalence principle, together with (also in that very first example) the fact that particles that are their own antiparticles have been heavily tested to obey ordinary gravity. The whole notion that energy has mass and that antiparticles gain their mass/energy through the same mechanisms that ordinary matter does. About the Standard Model: None of this has to do with the particularities of the Standard Model. Most quantum field theories have that structure. Tensor interactions: We have two unrelated arguments for why gravity is a tensor field: one comes from quantum field theory where to have a similar attractive force you need it to be a tensor one; the other one comes from general relativity (the premise of the theory). This is again not a proof, but all of physics is built on such cute "coincidences". (Edit to add: point being, the coincidence is that attraction as we have it requires a tensor force, which happens to be the case for completely unrelated reasons) Qualifications: Graduate student at the Yale Quantum Institute (through Yale's Physics Department). Hopefully I will be graduating this academic year :) (fingers crossed)