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whatshisface
1 day ago
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Noether's Theorem Revolutionized Physics
A state that can have the expected value of the energy change post measurement isn't considered to have an energy, rather an expected energy.
layer8
1 day ago
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This is about the energy of the system as described by the Schrödinger equation.
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whatshisface
1 day ago
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If a measurement changes the expected value of the energy, one or both of the initial and final states won't be time-invariant, and you're talking about the time-invariant Schrodinger equation.
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