论文标题
超温暖的热校正超级流体的状态方程
Low-temperature thermal corrections to a superfluid's equation of state
论文作者
论文摘要
使用有效的场理论方法，我们计算了通用超流体的低温声子热分区函数，从而为超级流体的状态方程，热力学数量和保守电流提供了领先的热校正。我们通过与该模型的有效场理论匹配，确认经典的两流体模型的正确性。在存在重叠的情况下，我们的结果与卡特和兰格斯的结果一致，这些方法是由不同方法得出的。我们还讨论了概括和特殊案例，包括非相关主义极限和保形超流体。
Using effective field theory methods, we calculate the low-temperature phonon thermal partition function for a generic superfluid, thus providing the leading thermal corrections to a superfluid's equation of state, thermodynamic quantities, and conserved currents. We confirm the correctness of the classic two-fluid model by matching to the effective field theory for that model. Where there is an overlap, our results agree with those of Carter and Langlois, which were derived by different methods. We also discuss generalizations and special cases, including the non-relativistic limit and the conformal superfluid.
