Relativistic Viscous Hydrodynamics in the Density Frame: Numerical Tests and Comparisons

Autor:	Bhambure, Jay, Mazeliauskas, Aleksas, Paquet, Jean-Francois, Singh, Rajeev, Singh, Mayank, Teaney, Derek, Zhou, Fabian
Rok vydání:	2024
Předmět:	Nuclear Theory General Relativity and Quantum Cosmology
Druh dokumentu:	Working Paper
Popis:	We conduct a numerical study of relativistic viscous fluid dynamics in the Density Frame for one-dimensional fluid flows. The Density Frame is a formulation of relativistic viscous hydrodynamics that is first-order in time, requires no auxiliary fields, and has no non-hydrodynamic modes. We compare our results to QCD kinetic theory simulations and find excellent agreement within the regime of applicability of hydrodynamics. Additionally, the Density Frame results remain well-behaved and robust near the boundary of applicability. We also compare our findings to the second-order-in-time hydrodynamic theory developed by Bemfica, Disconzi, Noronha, and Kovtun (BDNK) and a well-known M\"uller-Israel-Stewart-type hydrodynamics code, MUSIC, which is commonly used to simulate heavy-ion collisions. Comment: 28 pages, 11 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2412.10303 Zobrazit plný text záznamu View this record from Arxiv