Weyl Superfluidity in a Three-dimensional Dipolar Fermi Gas
Abstract
Weyl superconductivity or superfluidity, a fascinating topological state of matter, features novel phenomena such as emergent Weyl fermionic excitations and anomalies. Here we report that an anisotropic Weyl superfluid state can arise as a low temperature stable phase in a 3D dipolar Fermi gas. A crucial ingredient of our model is a rotating external field that generates a direction-dependent two-body effective attraction. Experimental signatures are predicted for cold gases in radio-frequency spectroscopy. The finite temperature phase diagram of this system is studied and the transition temperature of the Weyl superfluidity is found to be within the experimental scope for atomic dipolar Fermi gases.
Cite
@article{arxiv.1407.2949,
title = {Weyl Superfluidity in a Three-dimensional Dipolar Fermi Gas},
author = {Bo Liu and Xiaopeng Li and Lan Yin and W. Vincent Liu},
journal= {arXiv preprint arXiv:1407.2949},
year = {2015}
}
Comments
6 pages, 5 figures, presentation improved, version as accepted by Phys. Rev. Lett