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The vacuum tunnelling and the crossover of deconfinement in Friedberg-Lee model

We have discussed the vacuum tunnelling in Friedberg-Lee model. The tunnelling coefficient is derived in the field configuration space by calculating the transition amplitude using the path integral under the stationary phase approximation and the dilute instanton gas approximation. By studying the tunnelling effect between the two degenerating vacuums at the critical temperature and chemical potential, we find that the system could be deconfined by tunnelling, which could possibly change the first order deconfinement phase transition to crossover.

preprint2013arXivOpen access
Song ShuJia-Rong Li
hep-ph
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Open access2 authors1 topic
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Song ShuJia-Rong Li

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