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Story of Operators Creation/Anihilation

  1. Mar 27, 2010 #1
    Hi everyone !

    Could you tell me who is the inventor of these two operators (creation/anihilation) ?

    Was he a mathematician ? A physicist ? or both ?

    Who was the first to use them in Quantum Mechanics ?

    It's hard to find this kind of information.


  2. jcsd
  3. Mar 27, 2010 #2


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    I think they were first introduced by Dirac.
  4. Mar 27, 2010 #3
    There is quote in the book by Ryder in which I think Feynman intorduces annihilation/creation operators and then Dyson says to Feynman how the creation operator for the electron can create an electron out of the vacuum as that would violate charge conservation. :rofl:

    So, it seems to me that the use of ladder operators as creation/annihilation operators was not standard in the early days of QM.
  5. Mar 27, 2010 #4
    Dirac coined them, i think. It was used in his formulation on the positron, which initially he believed was the proton. Annihilaton becomes important for obvious reasons under his famous equation, since it describes the annihilation of inertial mass into pure gamma energy.
  6. Apr 1, 2010 #5
    Thank you for all these answers !!!!
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