Unified description of Bjorken and Landau 1+1 hydrodynamics

Details Unified description of Bjorken and Landau 1+1 hydrodynamics Unified description of Bjorken and Landau 1+1 hydrodynamics

2007-06-14

arxiv.org/abs/0706.2108v1

Phys.Rev.C76:054901,2007

Physics

Nuclear Physics

Nuclear Theory

20 pages, 5 figures

Scientific paper

10.1103/PhysRevC.76.054901

We propose a generalization of the Bjorken in-out Ansatz for fluid trajectories which, when applied to the (1+1) hydrodynamic equations, generates a one-parameter family of analytic solutions interpolating between the boost-invariant Bjorken picture and the non boost-invariant one by Landau. This parameter characterises the proper-time scale when the fluid velocities approach the in-out Ansatz. We discuss the resulting rapidity distribution of entropy for various freeze-out conditions and compare it with the original Bjorken and Landau results.

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