PIRSA:24070041

Beyond Horndeski theories

Langlois, D. (2024). Beyond Horndeski theories. Perimeter Institute. https://pirsa.org/24070041

Langlois, David. Beyond Horndeski theories. Perimeter Institute, Jul. 17, 2024, https://pirsa.org/24070041 

          @misc{ pirsa_PIRSA:24070041,
            doi = {10.48660/24070041},
            url = {https://pirsa.org/24070041},
            author = {Langlois, David},
            keywords = {Cosmology, Strong Gravity, Mathematical physics},
            language = {en},
            title = {Beyond Horndeski theories},
            publisher = {Perimeter Institute},
            year = {2024},
            month = {jul},
            note = {PIRSA:24070041 see, \url{https://pirsa.org}}
          }

David Langlois Université Paris Cité

Talk number PIRSA:24070041
DOI 10.48660/24070041
Collection
Talk Type Conference
Subject

Abstract

This talk will introduce scalar-tensor theories of gravity that contain a single scalar degree of freedom in addition to the usual tensor modes. These theories constitute the very broad family of Degenerate Higher-Order Scalar-Tensor (DHOST) theories, which include and extend Horndeski theories. Cosmological aspects of these theories will then be discussed. Finally, I will also present some results concerning black hole perturbations in the context of these models of modified gravity.