Energy and wave-action flows underlying Rayleigh-Jeans thermalization of optical waves propagating in a multimode fiberK. Baudin, A. Fusaro, J. Garnier, N. Berti, K. Krupa, I. Carusotto, S. Rica, G. Millot and A. PicozziEPL, 134 1 (2021) 14001DOI: https://doi.org/10.1209/0295-5075/134/14001