Neural Post-Einsteinian Test of General Relativity with the Third Gravitational Wave Transient Catalog
Phys. Rev. Lett. 136, 181402 – Published 6 May, 2026
DOI: https://doi.org/10.1103/n1pb-jt1n
Abstract
Gravitational waves (GWs) from compact binaries are excellent probes of gravity in the strong- and dynamical-field regimes. We report a test of general relativity (GR) with the third GW Transient Catalog (GWTC-3) plus a few O4 events using the recently developed neural post-Einsteinian framework, both on individual events and at the population level through hierarchical modeling. We find no significant violation of GR and place a constraint that, for the first time, efficiently covers non-GR theories characterized by not only post-Newtonian deviations but also those beyond under the same theory-agnostic framework.
