Polar phase of superfluid $^3$He: Dirac lines in the parameter and momentum spaces
Other Condensed Matter
2019-09-04 v2
Abstract
The time reversal symmetric polar phase of the spin-triplet superfluid He 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 , the spectrum of bosons (magnons) has Dirac loop in the 3D space of parameters -- the components of magnetic field . The bosonic Dirac system lives on the border between the type-I and type-II.
Keywords
Cite
@article{arxiv.1801.04576,
title = {Polar phase of superfluid $^3$He: Dirac lines in the parameter and momentum spaces},
author = {G. E. Volovik},
journal= {arXiv preprint arXiv:1801.04576},
year = {2019}
}
Comments
3 pages, 2 figures