Geodesic
The non-linear macroscopic model of Relativistic Extended Thermodynamics of an ultra-relativistic gas
Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni, Série 9, Tome 15 (2004) no. 1, pp. 59-68.

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The model for an ultra-relativistic gas is here considered in the framework of Extended Thermodynamics. The closure, satisfying exactly the principles of relativity and of entropy, is obtained by following the approach «at a macroscopic level». Our results are compared with the ones of the kinetic approach.
Il modello di un gas-relativistico viene qui preso in considerazione, nell’ambito della Termodinamica Estesa. Seguendo l’approccio a «livello macroscopico», viene trovata la chiusura soddisfacente esattamente il principio d’entropia e quello di relatività. I nostri risultati vengono confrontati con quelli dell’approccio cinetico. 
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Borghero, Francesco; Pennisi, Sebastiano. The non-linear macroscopic model of Relativistic Extended Thermodynamics of an ultra-relativistic gas. Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni, Série 9, Tome 15 (2004) no. 1, pp. 59-68. http://geodesic.mathdoc.fr/item/RLIN_2004_9_15_1_a5/

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