Directly observing how a coherent global phase forms has long been challenging. Now an incoherent magnon gas is observed to transform into a state with a macros

Directly observing how a coherent global phase forms has long been challenging. Now an incoherent magnon gas is observed to transform into a state with a macroscopic global phase, confirming a key prediction of Bose–Einstein condensation theory. [↧](https://t.co/aBmqtBHGLW…