PIRSA:24070041 Conference Cosmology

DOI10.48660/24070041

Conference/School: 50 Years of Horndeski Gravity: Exploring Modified Gravity

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}}
}

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.

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