论文标题
一维自旋偏振的费米气体中的粘性流量：集成性在粘度上的作用
Viscous Flow in a 1D Spin-Polarized Fermi Gas: the Role of Integrability on Viscosity
论文作者
论文摘要
Luttinger液体（LL）模型通常描述一维费米气体在低温下的运输特性。但是，要研究耗散，需要检查LL模型以外的相互作用。在这项工作中，我们提供了一个简单的模型，该模型允许直接计算散装粘度，即一维自旋极化P-WAVE费米气体。我们计算高温度和低温极限的散装粘度。我们发现，尽管显微镜模型的固有能力，但大量粘度是有限的，并且与规模对称性的要求是一致的。我们争辩说，集成性如何不禁止有限的散装粘度，并将我们的工作与以前的动力学理论计算进行比较。
The transport properties of one-dimensional Fermi gases at low-temperatures are often described by the Luttinger liquid (LL) model. However, to study dissipation one needs to examine interactions beyond the LL model. In this work we provide a simple model which allows for a direct microscopic calculation of the bulk viscosity, namely the one dimensional spin polarized p-wave Fermi gas. We calculate the bulk viscosity in both the high- and low-temperature limits. We find that the bulk viscosity is finite and consistent with the requirement of scale symmetry, in spite of the inherent integrability of the microscopic model. We argue how integrability does not forbid a finite bulk viscosity, and compare our work to previous kinetic theory calculations.
