Fermions with cubic and quartic spectrum
Strongly Correlated Electrons
2015-03-17 v3 High Energy Physics - Phenomenology
Abstract
We study exotic fermions with spectrum E^2 ~ p^{2N}. Such spectrum emerges in the vicinity of the Fermi point with multiple topological charge N, if special symmetry is obeyed. When this symmetry is violated, the multiple Fermi point typically splits into N elementary Fermi points -- Dirac points with N=1 and spectrum E^2 ~ p^2 .
Cite
@article{arxiv.1010.0393,
title = {Fermions with cubic and quartic spectrum},
author = {Tero T. Heikkila and G. E. Volovik},
journal= {arXiv preprint arXiv:1010.0393},
year = {2015}
}
Comments
6 pages, 6 figures, JETP Letters style, version submitted to JETP Letters, references added