PIRSA:24070034 Conference Cosmology

DOI10.48660/24070034

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

Traykova, D. (2024). Do Neutron stars k-mouflage?. Perimeter Institute. https://pirsa.org/24070034

Traykova, Dina. Do Neutron stars k-mouflage?. Perimeter Institute, Jul. 16, 2024, https://pirsa.org/24070034 

@misc{ pirsa_PIRSA:24070034,
  doi = {10.48660/24070034},
  url = {https://pirsa.org/24070034},
  author = {Traykova, Dina},
  keywords = {Cosmology, Strong Gravity, Mathematical physics},
  language = {en},
  title = {Do Neutron stars k-mouflage?},
  publisher = {Perimeter Institute},
  year = {2024},
  month = {jul},
  note = {PIRSA:24070034 see, \url{https://pirsa.org}}
}

Abstract

Scalar-tensor theories with a screening mechanism can serve as a viable model of cosmic acceleration, while still passing existing local tests of gravity. The validity of different screening mechanisms, such as kinetic screening (or k-mouflage) has been studied extensively in static and weak field regimes. However, only recently have works started to focus on determining whether these would work as expected near extremely compact objects. In this talk I will discuss some recent efforts to characterise kinetic screening mechanisms in these highly dynamical and non-linear regimes using numerical relativity in the case of a single oscillating neutron star, as well as how this picture may change for a binary neutron star configuration in a quasi-equilibrium state.

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