If ρ is the desity operator of a ensemble.(adsbygoogle = window.adsbygoogle || []).push({});

We get (ih/2π) ∂ρ/∂ t = [H,ρ ].

for a stationary state [H,ρ ]=0 . So H and ρ can share the same eigenvectors. Can someone explain what does this mean?

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# What is the physical meaning of [H,ρ ]=0 for a stationary state?

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