论文标题
关于全息粘弹性模型的流体动力描述
On the Hydrodynamic Description of Holographic Viscoelastic Models
论文作者
论文摘要
我们表明，具有自发损坏翻译的均质全息模型的正确双重流体动力描述必须包括所谓的“应变压力”，这是最近提出的一种新型的运输系数。考虑到这种新的成分，我们研究了大型全息模型的近平衡动力学，并忠实地重现了准模式光谱中存在的所有流体动力模式。此外，虽然应变压力是平衡构型的特征，但不会使自由能最小化，但我们认为并表明它也通过其温度导数影响了没有背景应变的模型。总而言之，我们提供了自发折断翻译的全息模型与其有效的流体动力描述之间的第一个完整匹配。
We show that the correct dual hydrodynamic description of homogeneous holographic models with spontaneously broken translations must include the so-called "strain pressure" -- a novel transport coefficient proposed recently. Taking this new ingredient into account, we investigate the near-equilibrium dynamics of a large class of holographic models and faithfully reproduce all the hydrodynamic modes present in the quasinormal mode spectrum. Moreover, while strain pressure is characteristic of equilibrium configurations which do not minimise the free energy, we argue and show that it also affects models with no background strain, through its temperature derivatives. In summary, we provide a first complete matching between the holographic models with spontaneously broken translations and their effective hydrodynamic description.
