Temperature and quark density effects on the chiral condensate: an AdS/QCD study
Temperature and quark density effects on the chiral condensate: an AdS/QCD study
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DOI：
10.1140/epjc/s10052-012-2096-9
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发表时间：
2011-12
期刊：
影响因子：
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通讯作者：
P. Colangelo;F. Giannuzzi;S. Nicotri;V. Tangorra
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文献类型：
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作者：
P. Colangelo;F. Giannuzzi;S. Nicotri;V. Tangorra
采用有限温度黑洞几何和夸克化学势μ，利用QCD的软壁全息模型，研究了手征凝聚体对温度和夸克密度的依赖关系。我们发现，对于低于某一临界值的μ，随着温度的升高，凝聚体减少并在某一温度(μ=0时)消失。观察到在固定温度下增加化学势的类似行为。这些结果与其他方法得到的结果是一致的。我们还评论了如果在低温下采用不涉及黑洞的几何，并且实现了Hawking-Page转换，则结果的稳健性。
We investigate the dependence of the chiral condensateon the temperature and quark density using the soft-wall holographic model of QCD, adopting geometries with black holes at finite temperature and quark chemical potentialμ. We find that, forμbelow a critical value, increasing the temperature the condensate decreases and vanishes at a temperature(atμ=0). An analogous behaviour is observed increasing the chemical potential at fixed temperature. These results agree with the findings obtained by other methods. We also comment on the robustness of the results if geometries not involving black holes are adopted at low temperature, and an Hawking–Page transition is implemented.