
Originally Posted by
Tensor
First off, let's clear some things up. All of our theories are models. They are more than likely not what is "reality", whatever that is. The models let us make predictions and test those predictions. Our current best model of gravity is General Relativity. It models spacetime and gravity as a warping of the psuedu-Reinmann manifold. Now, classically, gravity is modeled by a force. This model runs into problems at high speed and high energy limits.
Now we have that cleared up, gravity is only attractive, so there is no need for a positive particle and a negative particle (your +gravon or-travon). On top of that, as I"ve said, there is no currently workable model that uses particles as the exchange particle providing the field of gravity. IF there was, there are properties that we know it would have to have, based on the properties we have observed for gravity. One, it would have to be massless, as gravity's effect is theoretically infinite (in this it mimics the photon). Second, it would have to have a quantum spin of 2, which is the spin of particles that produce only attractive forces.
Yeah, and there is known actual material for the makeup of electrons, protons, quarks gluons photons, etc. How about the physical nature of space? What I'm trying to say is there is no evidence for any kind of actual nature at the basic levels of reality. What we have are models, the models we normally use are the models that make the most accurate predictions. There are, however, cases were we use models that are less accurate, but not by much depending on the situation , because the calculations are easier.
Yeah, explain to us the similarities of the dipole nature of gravitational radiation vs electromagnetic radiation.