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Abstract: We give an review the HBT puzzle, and argue that its resolution requires theintroduction of new physics close to the phase transition scale. We argue thata candidate for this new physics is bulk viscosity, recently postulated topeak, and even diverge, close to the phase transition temperature. We show thatsuch a viscosity peak can force the system created in heavy ion collisions tobecome unstable, and filament into fragments whose size is weakly dependent onthe global size of the system, thereby triggering freeze-out.



Autor: Giorgio Torrieri, Igor Mishustin, Boris Tomášik

Fuente: https://arxiv.org/







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