Quantum Gravity through the lens of Effective Field Theory

          @misc{ pirsa_PIRSA:25030056,
            doi = {10.48660/25030056},
            url = {https://pirsa.org/25030056},
            author = {Platania, Alessia},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Quantum Gravity through the lens of Effective Field Theory},
            publisher = {Perimeter Institute},
            year = {2025},
            month = {mar},
            note = {PIRSA:25030056 see, \url{https://pirsa.org}}
          }
          

Abstract

While a complete theory of quantum gravity remains elusive, several alternative approaches are being explored. Which ones are the most promising, and whether they are connected or fundamentally distinct, remain outstanding open questions. I will argue that looking at quantum gravity through the lens of effective field theory offers a promising path to test the internal consistency of different theories and systematically compare their low-energy manifestations. I will illustrate this perspective using asymptotically safe quantum gravity as a case study, discussing its interface with positivity bounds and swampland conjectures. Finally, I will outline how a similar strategy can be utilized to chart the landscape of quantum spacetimes stemming from an asymptotically safe ultraviolet completion.