Chiral fluid dynamics and collapse of vacuum bubbles
Apr, 1998Citations per year
Abstract:
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 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.- quark antiquark: plasma
- expansion: droplet
- symmetry: chiral
- effective Lagrangian
- sigma model: linear
- field theory: scalar
- meson: oscillation
- model: fluid
- vacuum state: bubble
- particle: production
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