期刊
PHYSICAL REVIEW D
卷 87, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.87.034003
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资金
- ANPCyT
- CONICET
- UBA (Argentina) [UBACYT X032]
We use a macroscopic description of a system of relativistic particles based on adding a nonequilibrium tensor to the usual hydrodynamic variables. The nonequilibrium tensor is linked to relativistic kinetic theory through a nonlinear closure suggested by the entropy production principle; the evolution equation is obtained by the method of moments and together with energy-momentum conservation closes the system. Transport coefficients are chosen to reproduce second-order fluid dynamics if gradients are small. We compare the resulting formalism to exact solutions of Boltzmann's equation in 0 + 1 dimensions and show that it tracks kinetic theory better than second-order fluid dynamics. DOI: 10.1103/PhysRevD.87.034003
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