Spontaneous Broken Symmetry 4

          @misc{ scivideos_PIRSA:07110022,
            doi = {},
            url = {https://pirsa.org/07110022},
            author = {Brout, Robert},
            keywords = {},
            language = {en},
            title = {Spontaneous Broken Symmetry 4},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2007},
            month = {nov},
            note = {PIRSA:07110022 see, \url{https://scivideos.org/index.php/pirsa/07110022}}
          }