PIRSA:22060055

Is singularity resolution trivial?

APA

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

MLA

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

BibTex

          @misc{ pirsa_22060055,
            doi = {},
            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}}
          }
          

Abstract

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.