Holographic superfluid flows with a localized repulsive potential
Holographic superfluid flows with a localized repulsive potential
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具有局部排斥势的全息超流体流动
DOI：
10.1103/physrevd.94.046007
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发表时间：
2016
影响因子：
5
通讯作者：
and T. Okamura
中科院分区：
文献类型：
--
作者：
A. Ishibashi;K. Maeda;and T. Okamura
我们研究具有外部排斥势的超流体流动的全息模型。当势的强度足够弱时，我们分析地构建了两个稳定的超流体流动解决方案。随着势能强度的增加，两个解在临界强度处合并成单个临界解，然后在临界值以上消失，正如鞍节点分岔理论所预测的那样。我们还分析了在一定的解耦近似下解周围波动的谱函数。
We investigate a holographic model of superfluid flows with an external repulsive potential. When the strength of the potential is sufficiently weak, we analytically construct two steady superfluid flow solutions. As the strength of the potential is increased, the two solutions merge into a single critical solution at a critical strength, and then disappear above the critical value, as predicted by a saddle-node bifurcation theory. We also analyze the spectral function of fluctuations around the solutions under a certain decoupling approximation.