dus is de vraag of een deeltje met spin dan anders zou roteren in een zwaartekrachtsveld dan een deeltje zonder spin
Je bent niet de eerste die zich dit afvraagt. Onderzoek tot op heden wijst vooralsnog uit dat gravitatie en spin geen relatie hebben:
KLIK : In the case of our Chinese researchers, they chose to test for coupling between gravity and a particle's intrinsic angular momentum, called spin...
Quantum spin is, confusingly, not related to the rotation of a body...
Nevertheless, particles like electrons and protons, as well as composite particles like atoms, have intrinsic spin angular momentum. So, an experiment comparing the free fall of particles with the same spin, but oriented in different directions, makes perfect sense...
So, does gravity care about your spin?
Short answer: no. The researchers obtained a null result, meaning that, to within the precision of their measurements, there was no detectable difference in atomic free falls when atoms were in different spin states...
KLIK:
Recent experimental work has determined that free falling 87Rb atoms on Earth, with vertically aligned spins, follow geodesics, thus apparently ruling out spin-gravitation interactions.