PIRSA:18010077

Compact binary systems in massless scalar-tensor theories

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

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

          @misc{ pirsa_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},
            year = {2018},
            month = {jan},
            note = {PIRSA:18010077 see, \url{https://pirsa.org}}
          }

Laura Bernard

Laboratoire Univers et Théories (LUTH)

Talk number
PIRSA:18010077
Collection
Talk Type
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.