Let me show a model I use of wave propagation and possible condensation__Which also applies to your
spin fusion, Antonio. I can represent it as this simple line diagram:
--> c <-->O<--> c <-- = 2c linear to cycloidic energy concentration of wave propagation at (O), and condensation,
iff phase state temperature is low enough, for
spin-fusion... This is a model I first envisioned back in the `80's, where two waves traveling toward each other have a group velocity of 2c. Since then I've theorized these two wave center collisions being required to cycloidically spin up to higher spin rates upon meeting, thus storing the energy for the wave propagation force vector going forward. If we just consider how a long radio wave acts upon entering Earth's higher density atmosphere, we'd realize Archimedes' cycloid motion is required to be part of the wave motion of such angular momentum law__due to the fact the back end of the long wave is catching up to the front end of the wave as it enters the higher density atmosphere, thus requiring the cycloidic angular motion of forces and resistances involved to spin faster, and form toward a smaller centered wave signature. Therefore; all waves approaching each other at group 2c would function the same at wave centers of oscillations, especially considering that many wave centers may be super-positioning from many directions at once__there seems to be plenty of wave storage energy in such a process for wave propagation to continue indefinitely. Now, many visualize this process as electrons__but, electrons can not occupy the same wave centers, due to the Pauli exclusion principle, therefore, I've always visualized the em-field as a photon field, except where other particles and isotopes of, exist. Imo, this is the complex multiple process of variable photon spin states, that actually fused in the early Universe__when temperatures were much nearer absolute zero k__and can also act as gravity waves, by having different and varying spin states__within the overall propagation of photons, from larger centers of mass, out and back in... These ideas are not my own only, as I've come across many others' models of similar mechanics...
If such mechanics are feasible and true, we still seem to have no way of detecting such motions, as photons only give our sensors what seems to be a pointed vector state__but, in reality could just as easily be only the center of said wave's greater state angular momentum's scalar area and motion signature... In other words, the wave may be collapsing into our sensors, giving us false vector directional readings, as we know no matter where we place our sensors, we get similar readings, unless special experiments, like Feynman's glass layers are set up, then his probabilities of arrows maths are used__still a very crude way of measuring wave position and motion realities, imo. With all our present best sensor technologies, we still have trouble measuring these hyper-fine structures of wave motions, because they send their signals in all directions at once, as scalar waves__so, all we have at the hyper-fine structure levels is possibility and probability models, of which this is just another__though one that possibly offers a gravity wave of variable spin states that just may be possible and true... Then, by theorizing the protons' possible higher spin states of the incoming photons' masses within, splitting these masses into finer masses, and spinning them to much higher spin states__and then possibly radiating them as the gravitons, which are only smaller mass photons, with much higher spin states__just may give us our first glimpse of a gravity mechanics__of less effecting masses leaving than entering, until say a huge gravity source such as Jupiter comes along, and changes the mechanics balance of all these photon spin states, and hyper-fine cycloidic motions__in both directions...
Just another model, to play with__but, it'll take a 4D quaternion geometric logic to see it__That's a
(simplest form) three vectors of particle-wave motions and one of time/delayed distance particle-wave motions, at the centers of all oscillations/harmonics... To me, it's always a dynamic hydrodynamic mechanics__pushed from the outside group velocities__In_then Out__just as my simple line diagram shows...!!!