论文标题
用变形的字符串配置在移动的重夸克上拖动力
Drag force on a moving heavy quark with deformed string configuration
论文作者
论文摘要
为了研究通过等离子体的重型夸克上的拖曳力，我们使用了变形的广告时空，其中变形参数$ c $描述了ADS/QCD中的非符号符号。在这种情况下，将夸克映射到广告空间中的探针字符串。考虑到探针字符串中变形参数的可能贡献，我们在阻力计算中应用C依赖性字符串ANSATZ的一般形式。然后，我们发现该参数可接受的值满足QCD计算。使用此结果，我们还讨论了扩散常数，该扩散常数与非相关性极限的现象学结果一致。另外，我们表明，在没有变形参数的情况下，探针字符串是径向坐标的严格增加功能，而C依赖性探针字符串的最大值与$ z $。
To study drag force on a moving heavy quark through a plasma, we use a deformed AdS space-time, in which deformation parameter $c$ describes non-conformality in AdS/QCD. In this case the quark is mapped to a probe string in the AdS space. Considering probable contribution of deformation parameter in the probe string, we apply a general form of c-dependent string ansatz in the drag force computation. Then we find the acceptable value of this parameter as it satisfies QCD calculations. Using this result, we also discuss diffusion constant which is in agreement with phenomenological result for non-relativistic limit. Also we show that while in absence of deformation parameter, probe string is a strictly increasing function of radial coordinate, the c-dependent probe string has a maximum value versus $z$.
