4290 20191025101835.0 SEMIN-2019-0023 Bertrand, Bruno Tests of Fundamental Physics from the Propagation of GNSS Signals 2019 2019-06-04 This talk introduces new tests of fundamental physics by means of the analysis of disturbances on the electromagnetic signals' propagation. We relate scalar coupling models in the electromagnetic sector to the "system-free" formulation of Maxwell’s equations. At the macroscopic scale, the disturbances on the electromagnetic waves are equivalent to that which occur during the propagation in an inhomogeneous medium. This talk introduces an original theoretical approach and shows the relevance of the method by a first quantification of the expected perturbations induced by a specific case of transient dark matter signature, the domain walls. As an application, we focus on the measurable phase shift in the GNSS signals' carrier. NO Université catholique de Louvain (UCLouvain) bruno.bertrand@observatoire.be https://agenda.irmp.ucl.ac.be/event/3394/ SEMIN