论文标题
关于反式转换附近的交际潜力的行为
On the behaviour of the interquark potential in the vicinity of the deconfinement transition
论文作者
论文摘要
在解元过渡的附近，可以使用有效的字符串理论（EST）精确预测间断势的行为。如果过渡是连续的，我们可以将EST结果与共形扰动分析相结合，并达到检测EST中NAMBU-GOTO近似之外的校正所需的精度。在$（2+1）$（2+1）$尺寸（属于2D ISING模型的相同普遍性类别）中，我们详细讨论了SU（2）仪表理论的解元过渡的情况，通过广泛的高精度模拟。我们表明，SU（2）模型的Polyakov环相关器不仅在临界点的2D ISING模型的自旋旋转相关器精确地描述，而且还降低了0.8 T_C $的温度。由于ISING模型的确切整合性，我们可以在Polyakov环相距的整个范围内扩展比较，甚至超出了共形扰动制度。我们使用这些结果来量化Nambu-Goto之外的第一个EST校正，并表明它与EST的引导性分析所施加的边界兼容。这种校正编码重要的物理信息，并可能阐明了通量管及其EST描述的性质。
In the vicinity of the deconfinement transition the behaviour of the interquark potential can be precisely predicted using the Effective String Theory (EST). If the transition is continuous we can combine EST results with a conformal perturbation analysis and reach the degree of precision needed to detect the corrections beyond the Nambu-Goto approximation in the EST. We discuss in detail this issue in the case of the deconfinement transition of the SU(2) gauge theory in $(2+1)$ dimensions (which belongs to the same universality class of the 2d Ising model) by means of an extensive set of high precision simulations. We show that the Polyakov loops correlator of the SU(2) model is precisely described by the spin-spin correlator of the 2d Ising model not only at the critical point, but also down to temperatures of the order of $0.8 T_c$. Thanks to the exact integrability of the Ising model we can extend the comparison in the whole range of Polyakov loop separations, even beyond the conformal perturbation regime. We use these results to quantify the first EST correction beyond Nambu-Goto and show that it is compatible with the bounds imposed by a bootstrap analysis of EST. This correction encodes important physical information and may shed light on the nature of the flux tube and of its EST description.
