Effective field theory of magnetohydrodynamics from generalized global symmetries
Effective field theory of magnetohydrodynamics from generalized global symmetries
复制标题
来自广义整体对称性的磁流体动力学有效场理论
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
D. Son
中科院分区：
文献类型：
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作者：
Paolo Glorioso;D. Son
介绍了非耗散磁流体力学的一种有效作用量。一个重要的指导原则是电动力学的广义全局对称性，这自然导致引入“双光子”作为负责流体电磁分量的自由度。形式主义包括额外的自由度和对称性，其特征的流体动力学制度。通过适当地增强其中一种对称性，这个理论就变成了无力电动力学。对称性还允许系统化本地和非本地保守螺旋。我们还讨论了高阶导数修正。
We introduce an effective action for non-dissipative magnetohydrodynamics. A crucial guiding principle is the generalized global symmetry of electrodynamics, which naturally leads to introducing a "dual photon" as the degree of freedom responsible for the electromagnetic component of the fluid. The formalism includes additional degrees of freedom and symmetries which characterize the hydrodynamic regime. By suitably enhancing one of the symmetries, the theory becomes force-free electrodynamics. The symmetries furthermore allow to systematize local and non-local conserved helicities. We also discuss higher-derivative corrections.