论文标题
多组分骨系统的流体力学
Hydrodynamics of multi-component Bosonic systems
论文作者
论文摘要
我们在局部平衡假设下在零温度下在零温度下具有短率相互作用的多组分叶气体的超流体流体动力方程，并表明量子压在不均匀的情况下通常存在。我们的方法可以扩展到具有远距离相互作用的系统，例如偶极 - 偶极相互作用，通过正确处理Hartree能量。对于高度对称的超流体，我们获得了激发光谱，并表明除了密度声子，所有其他激发都是退化的。讨论了结果的含义。
We obtain the superfluid hydrodynamic equations of a multi-component Bose gas with short-ranged interactions at zero temperature under the local equilibrium assumption and show that the quantum pressure is generally present in the nonuniform case. Our approach can be extended to systems with long-range interactions such as dipole-dipole interactions by treating the Hartree energy properly. For a highly symmetric superfluid, we obtain the excitation spectrum and show that except for the density phonon, all other excitations are all degenerate.The implication of our results is discussed.
