Monopole magnetohydrodynamics on a plane: Magnetosonic waves and dynamo instability

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Debarghya Banerjee - , University of Göttingen, Max-Planck-Institute for the Physics of Complex Systems (Author)
  • Roderich Moessner - , Max-Planck-Institute for the Physics of Complex Systems, Würzburg-Dresden Cluster of Excellence ct.qmat (Author)
  • Piotr Surówka - , Wrocław University of Science and Technology (Author)

Abstract

Condensed matter systems can host emergent "vacua"with particles, fields, and dimension different from that of the universe we inhabit. Motivated by the appearance of emergent gauge fields with both electric and magnetic charges, we consider the fate of electromagnetism in two dimensions in the presence of magnetic monopoles. We find that generically electromagnetic fields are damped due to resistive effects. However, we can still identify a magnetohydrodynamic regime. It exhibits magnetosonic waves which, unlike in d=3, are isotropic, to which there is a contribution from the odd viscosity coefficient present in the system. Further, we find a dynamo action, which unlike in d=3 requires compressibility of the flow.

Details

Original languageEnglish
Article number165104
JournalPhysical Review B
Volume111
Issue number16
Publication statusPublished - 15 Apr 2025
Peer-reviewedYes