Gravitational slip parameter and gravitational waves in Einstein–Cartan theory Maryam Ranjbar, Siamak Akhshabi and Mohsen Shadmehri Eur. Phys. J. C, 84 3 (2024) 316 Published online: 25 March 2024 DOI: 10.1140/epjc/s10052-024-12670-4