Revenge of the S-Matrix; or, What is the Simplest QFT?

          @misc{ pirsa_PIRSA:08060051,
            doi = {10.48660/08060051},
            url = {https://pirsa.org/08060051},
            author = {Arkani-Hamed, Nima},
            keywords = {Quantum Fields and Strings, Particle Physics, Cosmology},
            language = {en},
            title = {Revenge of the S-Matrix; or, What is the Simplest QFT?},
            publisher = {Perimeter Institute},
            year = {2008},
            month = {jun},
            note = {PIRSA:08060051 see, \url{https://pirsa.org}}
          }