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arXiv 1609.08038hep-ph
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QCD相变中界面效应的Dyson-Schwinger方程研究

Interface Effect in QCD Phase Transitions via Dyson-Schwinger Equation Approach

Fei Gao, Yu-xin Liu

摘要:

在QCD的Dyson-Schwinger方程(DSE)框架下,利用手征磁化率判据,得到了强相互作用物质的温度和化学势相图,并利用DSE方法计算了物质的压强等热力学性质,得到了温度和重子数密度相图。我们还得到了描述一级相变共存区两相不均匀性的界面张力和界面熵密度。考虑界面效应后,我们发现系统的总熵密度在一级相变的解除禁闭(动力学手征对称性恢复)和强子化(动力学手征对称性破缺)过程中都增加,从而解决了强子化过程中的熵之谜.

英文摘要:

With the chiral susceptibility criterion we obtain the phase diagram of strong-interaction matter in terms of temperature and chemical potential in the framework of Dyson-Schwinger equations (DSEs) of QCD.After calculating the pressure and some other thermodynamic properties of the matter in the DSE method, we get the phase diagram in terms of temperature and baryon number density. We also obtain the interface tension and the interface entropy density to describe the inhomogeneity of the two phases in the coexistence region of the first order phase transition. After including the interface effect, we find that the total entropy density of the system increases in both the deconfinement (dynamical chiral symmetry restoration) and the hadronization (dynamical chiral symmetry breaking) processes of the first order phase transitions and thus solve the entropy puzzle in the hadronization process.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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