标题： 小夸克质量下净重子数广义易感性的普适临界行为 显示英文标题

标题： Universal critical behavior of generaliezd susceptibilities of net-baryon number at small quark mass

摘要： 在小夸克质量的极限下，三维伊辛模型中温度轴与施加磁场方向之间的夹角在映射到QCD的$m_q^{2/5}$相平面时消失为$T-\mu_B$。通过选取两个不同的小角度并将伊辛模型的结果投影到QCD上，我们研究了净重子数的六阶、八阶和十阶易感性的普适临界行为。当仅考虑主要的临界贡献时，广义易感性对$\mu_B$的负峰并不具有普适性，这与角度为$90^{\circ}$的情况下的观察结果相反。其存在依赖于映射参数以及到相变线的距离。在纳入次主导临界贡献后，负峰在一定程度上增强但仍为非稳健特征。相比之下，正峰结构在所有情况下均保留，并代表了接近临界点时净重子数广义易感性的稳健特性。 显示英文摘要

摘要： In the limit of small quark masses, the angle between the temperature axis and the applied magnetic field direction in the three-dimensional Ising model vanishes as $m_q^{2/5}$ when mapped onto the QCD $T-\mu_B$ phase plane. By selecting two distinct small angles and projecting the Ising model results onto QCD, we have investigated the universal critical behavior of the sixth-, eighth-, and tenth-order susceptibilities of the net-baryon number. When considering only the leading critical contribution, the negative dip in the $\mu_B$ dependence of the generalized susceptibilities is not universal, in contrast to the observation in the case where the angle is $90^{\circ}$. Its existence depends on the mapping parameters and the distance to the phase transition line. After incorporating the sub-leading critical contribution, the negative dip is enhanced to some extent but remains a non-robust feature. In contrast, the positive peak structure persists in all cases and represents a robust characteristic of generalized susceptibilities of the net-baryon number near the critical point.