Coupling spin and momentum
In our quest for a local and realistic model of quantum mechanics, we have discussed spin in recent posts. We introduce now an additional quantity and mechanism, which will play a fundamental role in spin entanglement. In my earlier 2020 arXiv paper , this "spin-flip mechanism" has been introduced and described as reproduced below. The following figure help explaining the spin-flip probabilities mentioned above. Remember that spin is defined as where s 0 is the source spin and M is the spin propensity. As shown in the figure 1d above, jumps of spin propensity occurring across an external reset cannot induce spin flips. Therefore, there is no spin-flip energy associated to an ER. How is this spin-flip energy manifested? Naturally, into momentum. This momentum transfer can be described as where V denotes here the momentum propensity. We can also represent this transfer as a " force ". Indeed, for small values of spin-flip energy, we...