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Exact Solutions of the Equations of Relativistic Hydrodynamics Representing Potential Flows

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arxiv 0709.1053 v2 pith:AYG67M6F submitted 2007-09-07 math-ph astro-phmath.MPnucl-th

classification math-phastro-phmath.MPnucl-th
keywords solutionsanalyticcaseepsilonexactflowshydrodynamicskappa
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abstract

We use a connection between relativistic hydrodynamics and scalar field theory to generate exact analytic solutions describing non-stationary inhomogeneous flows of the perfect fluid with one-parametric equation of state (EOS) $p = p(\epsilon)$. For linear EOS $p = \kappa \epsilon$ we obtain self-similar solutions in the case of plane, cylindrical and spherical symmetries. In the case of extremely stiff EOS ($\kappa=1$) we obtain ''monopole + dipole'' and ''monopole + quadrupole'' axially symmetric solutions. We also found some nonlinear EOSs that admit analytic solutions.

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