论文标题
涡流运动量化了全息超氟中强的耗散
Vortex motion quantifies strong dissipation in a holographic superfluid
论文作者
论文摘要
全息二元性提供了在较高维空间中弱耦合的重力理论方面对强耦合量子系统的描述。但是，定量确定与通用全息理论相对应的量子系统的物理参数是一个挑战。在这里，我们解决了二维全息超流体的问题，已知表现出强大的耗散。我们在数值上模拟了涡旋偶极子的运动，并对由耗散性毛线 - 彼得斯基方程产生的相应动力学进行高精度匹配。对于涡流核心和时空轨迹，发现了极好的一致性。与与超级流体相互作用的点涡流的Hall-Vinen-Iordanskii方程的进一步比较，使我们能够确定全息超氟的摩擦参数。我们的结果表明，全息涡流动力学可以应用于实验可访问的超流体，例如强耦合的超电卵气体或稀薄的氦膜，其温度在开尔文范围内。这将使全息远程平衡动力学和湍流适合实验测试。
Holographic duality provides a description of strongly coupled quantum systems in terms of weakly coupled gravitational theories in a higher-dimensional space. It is a challenge, however, to quantitatively determine the physical parameters of the quantum systems corresponding to generic holographic theories. Here, we address this problem for the two-dimensional holographic superfluid, known to exhibit strong dissipation. We numerically simulate the motion of a vortex dipole and perform a high-precision matching of the corresponding dynamics resulting from the dissipative Gross-Pitaevskii equation. Excellent agreement is found for the vortex core shape and the spatio-temporal trajectories. A further comparison to the Hall-Vinen-Iordanskii equations for point vortices interacting with the superfluid allows us to determine the friction parameters of the holographic superfluid. Our results suggest that holographic vortex dynamics can be applied to experimentally accessible superfluids like strongly coupled ultracold Bose gases or thin helium films with temperatures in the Kelvin range. This would make holographic far-from-equilibrium dynamics and turbulence amenable to experimental tests.
