2 ms·
They can definitely arise as quasi particles. It's not impossible that there could also be fundamental particles with this property. It would require some new
by jfengel 2y ago
They can definitely arise as quasi particles.
It's not impossible that there could also be fundamental particles with this property. It would require some new symmetry to be found, for which there is currently no evidence, but it might be found be reconsidering existing data.