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arXiv 1503.02680hep-thcond-mat.mes-hall
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弯曲非相对论时空中的场和流体

Fields and fluids on curved non-relativistic spacetimes

Michael Geracie, Kartik Prabhu, Matthew M. Roberts

摘要:

我们认为非相对论弯曲的几何形状,并认为,背景结构应该从以前的作品中考虑推广。在这种方法中,导数算子由伽利略群的李代数中的伽利略自旋连接定义。这包括通常的自旋连接加上一个额外的“助推连接”,它参数化了导数算子中的自由度,而不是由挠率或度量相容性固定的。作为一个例子,我们写下来的最一般的耗散流体理论与第二定律在弯曲的非相对论性几何形状一致,并发现显着差异,从以前发现的允许的传输系数。所有的响应系数的Kubo公式。我们的方法也立即推广到独立的质量和电荷电流的系统,将出现在多组分流体。同时,我们也讨论了如何在导数中写出任意阶的多粒子种类的一般局部伽利略不变的非相对论作用量。几何学及其与非相对论性极限的关系的详细回顾可以在一篇配套论文中找到[arXiv:1503.02682]。

英文摘要:

We consider non-relativistic curved geometries and argue that the background structure should be generalized from that considered in previous works. In this approach the derivative operator is defined by a Galilean spin connection valued in the Lie algebra of the Galilean group. This includes the usual spin connection plus an additional "boost connection" which parameterizes the freedom in the derivative operator not fixed by torsion or metric compatibility. As an example we write down the most general theory of dissipative fluids consistent with the second law in curved non-relativistic geometries and find significant differences in the allowed transport coefficients from those found previously. Kubo formulas for all response coefficients are presented. Our approach also immediately generalizes to systems with independent mass and charge currents as would arise in multicomponent fluids. Along the way we also discuss how to write general locally Galilean invariant non-relativistic actions for multiple particle species at any order in derivatives. A detailed review of the geometry and its relation to non-relativistic limits may be found in a companion paper [arXiv:1503.02682].

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