If gravity is not as a force, but a consequence of masses moving along geodesic lines in a curved spacetime then what is a Graviton?
In: Physics
That’s the entire reason quantum physics and general relativity don’t get along.
If quantum physics is right, gravity is a force that must be mediated by a particle…we call that particle a graviton. We’ve never been able to isolate one but the Standard Model has a very good track record of predicting particles that we later find, so this isn’t necessarily an issue.
If general relativity is right, it’s not a force but warped spacetime.
One (or both) is wrong. They can’t both be right in their current formulation.
A graviton makes no sense under general relativity, but we don’t have a theory of quantum gravity that “looks like” general relativity at large scales (where we can do very successful experiments) but still plays nice with quantum physics.
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