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We investigate the dynamics of a strong first-order quark-hadron transition driven by cubic interactions via homogeneous bubble nucleation in the Friedberg-Lee model.The one-loop effective thermodynamic potential of the model and the critical bubble profiles have been calculated at different temperatures and chemical potentials.By taking the temperature and the chemical potential as variables,the evolutions of the surface tension,the typical radius of the critical bubble,and the shift in the coarse-grained free energy in the presence of a nucleation bubble are obtained,and the limit on the reliability of the thin-wall approximation is also addressed accordingly.Our results are compared to those obtained for a weak first-order quark-hadron phase transition;in particular,the spinodal decomposition is relevant. 相似文献
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在能量为s=5.5TeV的LHCPb?Pb重离子碰撞实验中,研究了和手征相变相关的π弦的可观测效应.利用Kibble-Zurek机制讨论了π弦的产生和演化.在LHCPb-Pb重离子碰撞实验中,如果手征相变发生并且是二级相变,那么π弦将会产生然后衰变.π弦的主要效应是:π弦衰变成大量的末态π粒子,这些大量的π粒子,主要分布在动量为143MeV的低动量空间;同时π弦的衰变还伴随着大量中性π粒子,这些中性的π粒子主要分布在动量为21MeV的低动量空间. 相似文献
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