Internal spin angular momentum

Larmor precession

A spin- particle in a constant magnetic field experiences a Hamiltonian¹

and given an initial state (measured along the direction of , which we will call the -axis) of , the state evolves as

where is the Larmor (angular) frequency. This corresponds to tilted at angle to the -axis precessing with angular frequency .

#state/tidy | #lang/en | #SemBr