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8 March 2020

  • 13:5413:54, 8 March 2020 diff hist −508 Quantum fluctuation Removed erroneous statement about the vacuum state being a quantum superposition state. Firstly, the number operator does commute with the field's Hamiltonian. Secondly, the vacuum state itself has no fluctuations in energy since it is an energy eigenstate (it is not a superposition). Rather, the electric field of vacuum has fluctuations because it does not commute with the number operator.

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