PIRSA:24070046

Post-Newtonian limit of Lorentz-violating scalar-tensor theories

Kobayashi, T. (2024). Post-Newtonian limit of Lorentz-violating scalar-tensor theories. Perimeter Institute. https://pirsa.org/24070046

Kobayashi, Tsutomo. Post-Newtonian limit of Lorentz-violating scalar-tensor theories. Perimeter Institute, Jul. 18, 2024, https://pirsa.org/24070046 

          @misc{ pirsa_PIRSA:24070046,
            doi = {10.48660/24070046},
            url = {https://pirsa.org/24070046},
            author = {Kobayashi, Tsutomo},
            keywords = {Cosmology, Strong Gravity, Mathematical physics},
            language = {en},
            title = {Post-Newtonian limit of Lorentz-violating scalar-tensor theories},
            publisher = {Perimeter Institute},
            year = {2024},
            month = {jul},
            note = {PIRSA:24070046 see, \url{https://pirsa.org}}
          }

Tsutomo Kobayashi

Rikkyo University

Talk number
PIRSA:24070046
Collection
Talk Type
Subject
Abstract
We study the weak-gravity regime of higher-order scalar-tensor theories that are degenerate in the unitary gauge. In a certain subset of theories analogous to Lorentz-violating scalar-tensor theories, we show that the Vainshtein mechanism due to nonlinear derivative interactions does not work. For this family of theories we determine all the PPN parameters in terms of the EFT of dark energy parameters and discuss the experimental bounds.