Physics · Quantum Mechanics
The expectation value of any time-dependent operator A(t) obeys which of the following equations in quantum mechanics?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1iℏ ∂⟨A(t)⟩/∂t = ⟨[A(t), H(t)]⟩ - iℏ⟨∂A(t)/∂t⟩
- 2iℏ ∂⟨A(t)⟩/∂t = -⟨[A(t), H(t)]⟩ + iℏ⟨∂A(t)/∂t⟩
- 3iℏ ∂⟨A(t)⟩/∂t = ⟨[A(t), H(t)]⟩ + iℏ⟨∂A(t)/∂t⟩✓
- 4iℏ ∂⟨A(t)⟩/∂t = -⟨[A(t), H(t)]⟩ - iℏ⟨∂A(t)/∂t⟩
Correct answer
iℏ ∂⟨A(t)⟩/∂t = ⟨[A(t), H(t)]⟩ + iℏ⟨∂A(t)/∂t⟩
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