Complete set of GW polarization modes in higher-derivative $$f(R,\square R,T)$$ theories of gravity

Evolution of gravitational waves in non-minimal coupling between geometry and matter theories of gravity

“…The capability of gravitational waves to interact with matter has provided scientists with direct detection through laser interferometers. This motivated extensive study of gravitational waves in modified gravity theories, particularly the non-minimal ones to investigate the possible constraints on the number of polarization modes of gravitational waves and their associated propagation velocities [77][78][79][80][81][82][83].…”