Chiral Fluid Dynamics and Collapse of Vacuum Bubbles

Details Chiral Fluid Dynamics and Collapse of Vacuum Bubbles Chiral Fluid Dynamics and Collapse of Vacuum Bubbles

1998-04-20

arxiv.org/abs/hep-ph/9804338v2

Phys.Rev.Lett. 83 (1999) 3134-3137

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages Revtex,5 figures, Figures modified, minor changes in text. To be published in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.83.3134

We study the expansion dynamics of a quark-antiquark plasma droplet from an initial state with restored chiral symmetry. The calculations are made within the linear $\sigma$ model scaled with an additional scalar field representing the gluon condensate. We solve numerically the classical equations of motion for the meson fields coupled to the fluid-dynamical equations for the plasma. Strong space-time oscillations of the meson fields are observed in the course of the chiral transition. A new phenomenon, the formation and collapse of vacuum bubbles, is also predicted. The particle production due to the bremsstrahlung of the meson fields is estimated.

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