Why are hydrodynamic theories applicable beyond the hydrodynamic regime?Sunil Jaiswal, Jean-Paul Blaizot, Rajeev S. Bhalerao, Zenan Chen, Amaresh Jaiswal and Li YanEPJ Web Conf., 296 (2024) 13007DOI: https://doi.org/10.1051/epjconf/202429613007