PIRSA:24070046

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

APA

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

MLA

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

BibTex

          @misc{ scivideos_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 for Theoretical Physics},
            year = {2024},
            month = {jul},
            note = {PIRSA:24070046 see, \url{https://scivideos.org/index.php/pirsa/24070046}}
          }
          

Tsutomo Kobayashi Rikkyo University

Talk numberPIRSA:24070046

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.