The interplay of spin-orbit coupling and Zeeman splitting in ultracold Fermi gases gives rise to a topological superfluid phase in two spatial dimensions that can host exotic Majorana excitations. Theoretical models have so far been based on a four-band Bogoliubov-de Gennes formalism for the combined spin-1/2 and particle-hole degrees of freedom. Here we present a simpler, yet accurate, two-band description based on a well-controlled projection technique that provides a new platform for exploring analogies with chiral p-wave superfluidity and detailed future studies of spatially non-uniform situations.
Cited by 6
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- 1 Massey University
- 2 The Dodd-Walls Centre for Photonic and Quantum Technologies [DWC]
- 3 Institute for Basic Science [IBS]
- 4 Te Whare Wānanga o Te Ūpoko o Te Ika a Māui / Victoria University of Wellington
- Marsden Fund (through Organization: Royal Society Te Apārangi / Royal Society of New Zealand)