Elsevier

Physics Letters B

Volume 806, 10 July 2020, 135525
Physics Letters B

Equivalence between first-order causal and stable hydrodynamics and Israel-Stewart theory for boost-invariant systems with a constant relaxation time

https://doi.org/10.1016/j.physletb.2020.135525Get rights and content
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Abstract

We show that the recently formulated causal and stable first-order hydrodynamics has the same dynamics as Israel-Stewart theory for boost-invariant, Bjorken expanding systems with an ideal gas equation of state and a regulating sector determined by a constant relaxation time. In this case, the general solution of the new first-order formulation can be determined analytically.

Keywords

Israel-Stewart theory
First-order causal and stable hydrodynamics
Relativistic heavy-ion collisions

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