论文标题
在存在磁场的情况下，强烈耦合各向异性等离子体中的喷气淬灭参数
Jet quenching parameters in strongly coupled anisotropic plasmas in the presence of magnetic fields
论文作者
论文摘要
我使用全息量规/重力双重性来系统地计算出在外部磁场存在下强耦合各向异性等离子体中的射流参数。磁场将空间旋转对称性从$（3）$到$ SO（2）$分解，从而导致存在多个各向异性喷射淬灭参数，这些参数在此处进行了两个完全不同的全息设置。其中一个对应对应于由外部磁场触发的强烈耦合$ \ Mathcal {n} = 4 $超级阳米尔浆浆，而另一个是一个自下而上的爱因斯坦 - 马克斯韦尔 - 韦尔顿二利 - 二元模型，与高能量外周的相关性相关，以$ 1+1+1+（$）$（$ 1），$（$ 1）晶格QCD热力学，物理夸克质量为零和非零磁场。我发现，对于这两种模型，所有各向异性喷射淬灭参数的总体增强都随着磁场的增加而增强。此外，我还得出结论，对于这两种模型，横向宽阔的宽阔宽度都比磁场方向大。由于这些结论显示在有限温度和磁场下为两个较不不同的全息图设置持有，因此建议它们是强烈耦合的各向异性磁化等离子体的相当强大的特征。
I use the holographic gauge/gravity duality to systematically calculate the jet quenching parameters in strongly coupled anisotropic plasmas in the presence of external magnetic fields. The magnetic field breaks down spatial rotation symmetry from $SO(3)$ to $SO(2)$, leading to the presence of multiple anisotropic jet quenching parameters, which are evaluated here in two quite different holographic settings. One of them corresponds to a top-down deformation of the strongly coupled $\mathcal{N} = 4$ Super Yang-Mills plasma triggered by an external magnetic field, while the other one is a bottom-up Einstein-Maxwell-Dilaton model of phenomenological relevance for high energy peripheral heavy ion collisions, since it is able to provide a quantitative description of $(2+1)$-flavors lattice QCD thermodynamics with physical quark masses at zero and nonzero magnetic fields. I find for both models an overall enhancement of all the anisotropic jet quenching parameters with increasing magnetic fields. Moreover, I also conclude that for both models transverse momentum broadening is larger in transverse directions than in the direction of the magnetic field. Since these conclusions are shown to hold for two rather different holographic setups at finite temperature and magnetic fields, they are suggested as fairly robust features of strongly coupled anisotropic magnetized plasmas.
