- #1
LarryS
Gold Member
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In QM, states evolve in time by action of the Time Evolution Unitary Operator, U(t,t0). Without the action of this operator, states do not move forward in time. Yet even stationary states, like an eigenstate of energy, still contain a time variable – they oscillate in time at a fixed frequency.
To me, the above implies that there are TWO types of “time”, one for the fixed oscillations of stationary states and the other as arguments for that unitary operator.
Comments?
As always, thanks in advance.
To me, the above implies that there are TWO types of “time”, one for the fixed oscillations of stationary states and the other as arguments for that unitary operator.
Comments?
As always, thanks in advance.