Title: Effective string description of the reconfined phase in the trace deformed $\mathrm{SU}(2)$ Yang-Mills theory in (2+1) dimensions Show Chinese title

Title: 迹变形的(2+1)维$\mathrm{SU}(2)$ Yang-Mills 理论中再束缚相的有效字符串描述

Abstract: We study the behaviour of the flux tube in the reconfined phase of the trace deformed $\mathrm{SU}(2)$ Yang-Mills theory in (2 + 1) dimensions. In this phase the Polyakov loop has a vanishing expectation value (and center symmetry is recovered) even at high temperatures. We study, by means of numerical simulations, the confining potential between two Polyakov loops. We show that its behaviour is very different from that of usual confining gauge models and shows a remarkable agreement with the predictions of the so called "rigid string" in the limit in which the rigidity term (i.e. a term proportional to the square of the extrinsic curvature of the string) is very large and is the dominant contribution in the action. Show Chinese abstract

Abstract: 我们研究了在(2 + 1)维迹变形的$\mathrm{SU}(2)$ Yang-Mills理论的再禁闭相中通量管的行为。 在此相中，即使在高温下，Polyakov环的期望值也为零（并且中心对称性得以恢复）。 我们通过数值模拟研究了两个Polyakov环之间的禁闭势。 我们证明其行为与通常的禁闭规范模型大不相同，并且在刚度项（即，与弦的外曲率平方成正比的项）非常大并且是作用量中的主要贡献时，与所谓的“刚性弦”的预测有显著的一致性。