arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.14416hep-th
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全息模型中虚化学势的推广

Extension to Imaginary Chemical Potential in a Holographic Model

Kazuo Ghoroku, Kouji Kashiwa, Yoshimasa Nakano, Motoi Tachibana, Fumihiko Toyoda

摘要:

将QCD中研究色超导性的自底向上全息模型推广到虚化学势($μ_I$)区域,并在$μ_I$ -温度(T)平面上研究了相图.进行分析的情况下,探针近似和背景的反反应从味费米子考虑。对于这两种情况,我们可以找到预期的Roberge-Weiss(RW)转变。在反反应溶液的情况下,发现产生RW周期性的色数$N_c$的边界。它被给出为$N_c\geq 1.2$。通过与$μ_I=0$附近的格点量子色动力学结果的比较,我们可以保证这个扩展模型的正确性。

英文摘要:

We extend a bottom up holographic model, which has been used in studying the color superconductivity in QCD, to the imaginary chemical potential ($μ_I$) region, and the phase diagram is studied on the $μ_I$-temperature (T) plane. The analysis is performed for the case of the probe approximation and for the background where the back reaction from the flavor fermions are taken into account. For both cases, we could find the expected Roberge-Weiss (RW) transitions. In the case of the back-reacted solution, a bound of the color number $N_c$ is found to produce the RW periodicity. It is given as $N_c\geq 1.2$. Furthermore, we could assure the validity of this extended model by comparing our result with the one of the lattice QCD near $μ_I=0$.

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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