Biaxial nematic phases in ultracold dipolar Fermi gases
Benjamin M. Fregoso, Kai Sun, Eduardo Fradkin +1 more
Ultracold dipolar Fermi gases represent relatively unexplored, strongly correlated systems arising from long-range and anisotropic interactions. We demonstrate the possibility of a spontaneous symmetry breaking biaxial phase in these systems, which may be realized in, e.g., gases of ultracold polar molecules or strongly magnetic atoms. This biaxial nematic phase is manifest in a spontaneous distortion of the Fermi surface perpendicular to the axis of polarization. We describe these dipolar interaction induced phases using Landau Fermi liquid theory.
arXiv:0902.0739•New Journal of Physics•Oct 2, 2009•78 citations