PIRSA:18010077

Video URL

https://pirsa.org/18010077

Compact binary systems in massless scalar-tensor theories

Bernard, L. (2018). Compact binary systems in massless scalar-tensor theories. Perimeter Institute for Theoretical Physics. https://pirsa.org/18010077

Bernard, Laura. Compact binary systems in massless scalar-tensor theories. Perimeter Institute for Theoretical Physics, Jan. 25, 2018, https://pirsa.org/18010077 

          @misc{ scivideos_PIRSA:18010077,
            doi = {10.48660/18010077},
            url = {https://pirsa.org/18010077},
            author = {Bernard, Laura},
            keywords = {Strong Gravity},
            language = {en},
            title = {Compact binary systems in massless scalar-tensor theories},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2018},
            month = {jan},
            note = {PIRSA:18010077 see, \url{https://scivideos.org/index.php/pirsa/18010077}}
          }

Laura Bernard Laboratoire Univers et Théories (LUTH)

Talk numberPIRSA:18010077
DOI10.48660/18010077
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

The observations of gravitational waves from coalescing compact binary systems allow us to test gravity in its strong field regime. In order to better constrain alternative theories of gravity, one has to build template waveforms for these theories. In this talk, I will present a post-Newtonian Lagrangian approach adapted to the specificities of scalar-tensor theories. I will derive the equations of motion of a compact binary system at 3PN order in harmonic coordinates. This result is primordial in order to compute the scalar and gravitational waveforms at 2PN order. I will conclude by a short discussion on tidal effects.