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Gauge degree of freedom

  1. Apr 30, 2012 #1
    Is it okay to classify the angular degree of freedom of a point on a circle as a gauge degree

    of freedom?

    (i). One can add 2Pi to angle without changing the position of point.

    (ii). U(1) symmetry exp (i theta)
  2. jcsd
  3. Apr 30, 2012 #2


    User Avatar
    Science Advisor

    Typically this corresponds to global translational invariance; in order to be gauge trf. it should be a local symmetry.
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