论文标题
超声磁性胶气的导热率
Thermal Conductivity of an Ultracold Paramagnetic Bose Gas
论文作者
论文摘要
我们通过Chapman-Enskog程序在分析中得出超电导率的传输量张量，但尚未量子归化的气体含量为骨体灯笼原子。张量系数从各向异性碰撞横截面上继承了各向异性，这些偶极物质在其依赖于偶极矩，偶极方向和$ s $波散射长度的情况下表现出来。这些功能依赖性通过调整微观原子相互作用开辟了控制宏观气体现象的途径。作为说明性的例子，我们分析了温度热点的时间演变，该温度热点显示出优先的热扩散与偶极取向的正交，这是各向异性热传导的直接结果。
We analytically derive the transport tensor of thermal conductivity in an ultracold, but not yet quantum degenerate, gas of Bosonic lanthanide atoms using the Chapman-Enskog procedure. The tensor coefficients inherit an anisotropy from the anisotropic collision cross section for these dipolar species, manifest in their dependence on the dipole moment, dipole orientation, and $s$-wave scattering length. These functional dependencies open up a pathway for control of macroscopic gas phenomena via tuning of the microscopic atomic interactions. As an illustrative example, we analyze the time evolution of a temperature hot-spot which shows preferential heat diffusion orthogonal to the dipole orientation, a direct consequence of anisotropic thermal conduction.
