Quantum gravity from fakeons

          @misc{ scivideos_PIRSA:19090010,
            doi = {10.48660/19090010},
            url = {https://pirsa.org/19090010},
            author = {Anselmi, Damiano},
            keywords = {Cosmology, Particle Physics, Strong Gravity},
            language = {en},
            title = {Quantum gravity from fakeons},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2019},
            month = {sep},
            note = {PIRSA:19090010 see, \url{https://scivideos.org/pirsa/19090010}}
          }
          

Abstract

A new quantization prescription is able to endow quantum field theory with a new type of “particle”, the fakeon (fake particle), which mediates interactions, but cannot be observed. A massive fakeon of spin 2 (together with a scalar field) allows us to build a theory of quantum gravity that is both renormalizable and unitary, and basically unique. After presenting the general properties of this theory, I discuss its classical limit, which carries important remnants of the fakeon quantization prescription. I also discuss the implications for cosmology and the possibility that the Higgs boson might be a fakeon.