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arXiv 2109.07927hep-thgr-qc
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色超导的幂律Maxwell场全息模型

Holographic model with power-law Maxwell field for color superconductivity

Cao H. Nam

摘要:

研究色超导(CSC)相对于理解中子星核心的物理是必不可少的,这是唯一已知的CSC相可能出现的背景,由于引力将物质挤压到足够高的密度。我们提出了一个简单的全息对偶描述CSC相变在现实的杨米尔斯理论与幂律麦克斯韦场。如果幂律Maxwell场的幂参数足够小于1但大于$1/2$,且化学势大于某一临界值,则在解禁闭阶段会出现色数较大的CSC相变,这在通常的Maxwell场情况下是没有的.然而,功率参数是不是任意低于一个,因为当这个参数是足够远离一个,它会导致CSC状态的发生在约束阶段,这是不兼容的非零真空期望值的颜色nonsinglet运营商。

英文摘要:

Studying the color superconductivity (CSC) phase is essential to understand the physics in the core of the neutron stars which is the only known context where the CSC phase might appear due to the gravitational force squeezing the matter to a sufficiently high density. We propose a simple holographic dual description of the CSC phase transition in the realistic Yang-Mills theory with the power-law Maxwell field. We find the CSC phase transition with the large color number in the deconfinement phase, which is not found in the case of the usual Maxwell field, if the power parameter characterizing for the power-law Maxwell field is sufficiently lower than one but above $1/2$ and the chemical potential is above a critical value. However, the power parameter is not arbitrary below one because when this parameter is sufficiently far away from one it leads to the occurrence of the CSC state in the confinement phase which is not compatible with a nonzero vacuum expectation value of the color nonsinglet operator.

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