论文标题
颜色超导性使用自洽的NJL型模型
Color superconductivity with self-consistent NJL-type model
论文作者
论文摘要
在本文中，NJL型模型用于研究颜色超导性。 NJL型模型的四屈服相互作用被FILZ转换为两个不同的类别，即夸克 - 易药和夸克 - 夸克相互作用通道，分别与手性对称性断裂和颜色超导性相关。我们得出的结论是，当采用平均场近似值时，夸克 - 易药和夸克 - 夸克相互作用通道之间的加权因素在相结构上具有重要意义，并且巴里昂数量密度对夸克 - 易夸克相互作用通道的加权因子产生了严格的约束。此外，敏感性表明颜色超导相变是二阶的，并且随着夸克数量密度的增加而发生在手性交叉过渡之前。最后，我们研究了颜色超导性的临界温度$ t_c $，并且与diquark冷凝物$δ\ of tiquark Condense的扰动结果一致。
In this paper, the NJL-type model is used to investigate the color superconductivity. The four-fermion interactions of the NJL-type model are Fierz-transformed into two different classes, i.e., the quark-antiquark and the quark-quark interaction channels, associated with the chiral symmetry breaking and color superconductivity respectively. We conclude that the weighting factor between quark-antiquark and quark-quark interaction channels has significance on the phase structure when the mean-field approximation is employed, and the baryon number density gives a tight constraint on the weighting factor of quark-antiquark interaction channels. Besides, the susceptibilities show that the color superconducting phase transition is of the second-order and takes place before the chiral crossover transition as quark number density increases. In the end, we study the critical temperatures $T_c$ of the color superconductivity and it agrees with the perturbative result of diquark condensate $Δ\approx0.57T_c$.
