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Color superconductivity in a holographic model

机译:全息模型中的颜色超导

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A holographic bottom-up model used in studying the superconducting system is applied to search for the color superconducting phase of supersymmetric Yang-Mills theory with quarks. We apply the probe analysis of this model to the supersymmetric Yang-Mills theory in both the confinement and the deconfinement phases. In this analysis, we find the color superconductivity in both phases when the baryon chemical potential exceeds a certain critical value. This result implies that, above the critical chemical potential, a color nonsinglet diquark operator, namely the Cooper pair, has its vacuum expectation value even in the confinement phase. In order to improve this peculiar situation, we proceed with the analysis by taking account of the full backreaction from the probe. As a result, the color superconducting phase, which is observed in the probe approximation, disappears in both the confinement and the deconfinement phases when parameters of the theory are set within their reasonable values.
机译:用全息自底向上模型研究超导系统,用夸克寻找超对称杨米尔斯理论的彩色超导相。在限制阶段和解除限制阶段,我们都将该模型的探测分析应用于超对称Yang-Mills理论。在此分析中,当重子化学势超过某个临界值时,我们发现了两个相中的颜色超导性。该结果表明,在临界化学势以上,即使在限制阶段,非单色双夸克有色算子(即Cooper对)也具有其真空期望值。为了改善这种特殊情况,我们通过考虑探针的全部反向反应来进行分析。结果,当将理论参数设置在合理值内时,在探针近似中观察到的颜色超导阶段在限制阶段和解除限制阶段都消失了。

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