JETP Letters

, Volume 107, Issue 5, pp 324–326 | Cite as

Polar Phase of Superfluid 3He: Dirac Lines in the Parameter and Momentum Spaces

  • G. E. Volovik
Condensed Matter


The time reversal symmetric polar phase of the spin-triplet superfluid 3He has two types of Dirac nodal lines. In addition to the Dirac loop in the spectrum of the fermionic Bogoliubov quasiparticles in the momentum space (p x , p y , p z ), the spectrum of bosons (magnons) has Dirac loop in the 3D space of parameters—the components of magnetic field (H x ,H y ,H z ). The bosonic Dirac system lives on the border between the type-I and type-II.


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Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  1. 1.Low Temperature LaboratoryAalto UniversityAaltoFinland
  2. 2.Landau Institute for Theoretical PhysicsRussian Academy of SciencesChernogolovka, Moscow regionRussia

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