Change of vertex amplitude under coarse graining In Euclidean spinfoam model I

          @misc{ scivideos_PIRSA:14050128,
            doi = {10.48660/14050128},
            url = {https://pirsa.org/14050128},
            author = {Chen, Lin-Qing},
            keywords = {},
            language = {en},
            title = {Change of vertex amplitude under coarse graining In Euclidean spinfoam model I},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2014},
            month = {may},
            note = {PIRSA:14050128 see, \url{https://scivideos.org/index.php/pirsa/14050128}}
          }