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created: 2021-11-07 20:55:22
modified: 2022-01-10 04:13:04
In quantum mechanics, we can use three different ways to describe time evolution of states and operators. These methods are related to each other in terms of unitary transformations, so we have the freedom to use either one according to the Hamiltonian operator of the system.
| Picture | Heisenberg | Dirac | Schrödinger |
|---|---|---|---|
| Ket state | constant | ||
| Operator | constant |