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The invariant momentum-space volume element?

  1. Feb 21, 2014 #1
    When we way that


    is the invariant volume element, is that with respect to all Lorentz transformations or just proper orthochronous Lorentz transformations?
  2. jcsd
  3. Feb 21, 2014 #2


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    The latter
  4. Feb 21, 2014 #3
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