Détail du document
Identifiant
oai:arXiv.org:2412.03712
Sujet
General Relativity and Quantum Cos... Astrophysics - High Energy Astroph... High Energy Physics - TheoryAuteur
Salazar, J. Félix García-Perciante, Ana Laura Sarbach, OlivierCatégorie
sciences : astrophysique
Année
2024
Date de référencement
11/12/2024
Mots clés
frame theoryRésumé
We propose a first-order theory of dissipative fluids in the trace-fixed particle frame, which is similar to Eckart's frame except that the temperature is determined by fixing the trace of the stress-energy tensor.
Our theory is hyperbolic and causal provided a single inequality holds.
For low wave numbers, the expected damped modes in the shear, acoustic, and heat diffusion channels are recovered.
Stability of global equilibria with respect to all wave numbers is also analyzed.
The conditions for hyperbolicity, causality and stability are satisfied for a simple gas of hard spheres or disks.
;Comment: 10 pages, 2 figures
Salazar, J. Félix,García-Perciante, Ana Laura,Sarbach, Olivier, 2024, Relativistic dissipative fluids in the trace-fixed particle frame: hyperbolicity, causality and stability
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