PIRSA:25050013

Carroll limit of gravity and spacelike (Belinski-Khalatnikov-Lifshitz) singularities

Henneaux, M. (2025). Carroll limit of gravity and spacelike (Belinski-Khalatnikov-Lifshitz) singularities. Perimeter Institute. https://pirsa.org/25050013

Henneaux, Marc. Carroll limit of gravity and spacelike (Belinski-Khalatnikov-Lifshitz) singularities. Perimeter Institute, May. 01, 2025, https://pirsa.org/25050013 

          @misc{ pirsa_PIRSA:25050013,
            doi = {10.48660/25050013},
            url = {https://pirsa.org/25050013},
            author = {Henneaux, Marc},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Carroll limit of gravity and spacelike (Belinski-Khalatnikov-Lifshitz) singularities},
            publisher = {Perimeter Institute},
            year = {2025},
            month = {may},
            note = {PIRSA:25050013 see, \url{https://pirsa.org}}
          }

Marc Henneaux College De France

Talk numberPIRSA:25050013
DOI10.48660/25050013
Collection
Talk Type Scientific Series
Subject

Abstract

Einstein's theory admits interesting limits with different causal structures obtained by letting the speed of light go to infinity (Galilean or "non-relativistic" limit) or to zero (Carrollian, sometimes called "ultrarelativistic", limit). The Carroll limit turns out to be relevant near spacelike (cosmological) singularities, and particularly so when p-form gauge fields are coupled to gravity as in the context of extended supergravities. The resulting differential equations possess a remarkable interpretation in terms of infinite-dimensional Kac-Moody algebras. The talk will review various aspects of Carroll invariant theories, of the Belinski-Khalatnikov-Lifshitz analysis of spacelike singularities and of the related symmetries.