Could there be more Gravitons?
Spin Inversion Symmetry (SIS) is currently a conjecture.
It says says that every elementary particle of spin s has a dual particle of spin 1/s. Of course, SIS does not apply to the spin 0 Higgs. But it applies to all other elementary particles in the Standard Model and to the graviton.
So, applying SIS to the 3 neutrinos (electron neutrino, muon neutrino, tau neutrino), and assuming charge is conserved, we get 3 neutral spin-2 particles. A trio of gravitons!
It's still a hunch.. or conjecture. But if true the implications are amazing.
Content written and posted by Ken Abbott firstname.lastname@example.org