Gravitational waves and geometrical optics in scalar-tensor theories

  title={Gravitational waves and geometrical optics in scalar-tensor theories},
  author={Alice Garoffolo and Gianmassimo Tasinato and Carmelita Carbone and Daniele Bertacca and Sabino Matarrese},
  journal={Journal of Cosmology and Astroparticle Physics},
  pages={040 - 040}
The detection of gravitational waves (GWs) propagating through cosmic structures can provide invaluable information on the geometry and content of our Universe as well as on the fundamental theory of gravity. In order to test possible departures from General Relativity, it is essential to analyze, in a modified gravity setting, how GWs propagate through a perturbed cosmological space-time. Working within the framework of geometrical optics, we develop tools to address this topic for a broad… 

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