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Creation, annihilation and motion

  1. Jun 20, 2013 #1
    I'd like to know if creation and annihilation operators are involved in a free trajectory of a particle from point A to point B. If it's the case, how so?

    If there is a detector at A, and another one at B, mathematically speaking, can it be said that the particle is annihilated at A, and created at B later on ?
  2. jcsd
  3. Jun 21, 2013 #2

    Simon Bridge

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    Is that how creation and annihilation operators are generally used?
    Wouldn't you normally have the particle created at the source and annihilated at the detector?
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