Why matter matters in quantum gravity


Eichhorn, A. (2014). Why matter matters in quantum gravity. Perimeter Institute. https://pirsa.org/14040109


Eichhorn, Astrid. Why matter matters in quantum gravity. Perimeter Institute, Apr. 25, 2014, https://pirsa.org/14040109


          @misc{ pirsa_PIRSA:14040109,
            doi = {10.48660/14040109},
            url = {https://pirsa.org/14040109},
            author = {Eichhorn, Astrid},
            keywords = {},
            language = {en},
            title = {Why matter matters in quantum gravity},
            publisher = {Perimeter Institute},
            year = {2014},
            month = {apr},
            note = {PIRSA:14040109 see, \url{https://pirsa.org}}

Astrid Eichhorn University of Southern Denmark


I will argue that a fundamental theory of quantum gravity that is applicable to our universe must include matter degrees of freedom. In my talk I will focus on the option that these are fundamental, in contrast to low-energy effective, degrees of freedom, and must thus be included in the microscopic dynamics of spacetime.
I will present evidence that dynamical Standard Model matter is compatible with asymptotically safe quantum gravity, while several "Beyond Standard Model" scenarios are disfavored. I will also discuss how the coupling to matter opens a window into the observational quantum gravity regime.