Hydrodynamic representation and energy balance for Dirac and Weyl fermions in curved space-times Tonatiuh Matos, Omar Gallegos and Pierre-Henri Chavanis Eur. Phys. J. C, 82 10 (2022) 898 Published online: 11 October 2022 DOI: 10.1140/epjc/s10052-022-10853-5