Is singularity resolution trivial?


Jia, D. (2022). Is singularity resolution trivial?. Perimeter Institute. https://pirsa.org/22060055


Jia, Ding. Is singularity resolution trivial?. Perimeter Institute, Jun. 22, 2022, https://pirsa.org/22060055


          @misc{ pirsa_22060055,
            doi = {10.48660/22060055},
            url = {https://pirsa.org/22060055},
            author = {Jia, Ding},
            keywords = {Other},
            language = {en},
            title = {Is singularity resolution trivial?},
            publisher = {Perimeter Institute},
            year = {2022},
            month = {jun},
            note = {PIRSA:22060055 see, \url{https://pirsa.org}}

Ding Jia Perimeter Institute for Theoretical Physics

Talk Type Conference


Many non-trivial ideas have been proposed to resolve singularities in quantum gravity. In this talk I argue that singularity resolution can be trivial in gravitational path integrals, because geodesically incomplete singular spacetimes are usually not included in the sum. For theories where this holds, there is no need to develop non-trivial ideas on singularity resolution. Instead, efforts should better be directed to understand tunneling processes and complex-valued spacetimes.