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arXiv · 1511.03502

Chiral $p\pm ip$ superfluid on a sphere

Sergej Moroz·Carlos Hoyos·Leo Radzihovsky
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Abstract

We consider a spinless fermionic $p\pm ip$ superfluid living on a two-dimensional sphere. Using superfluid hydrodynamics we show that the ground state necessarily exhibits topological defects: either a pair of elementary vortices or a domain wall between $p\pm ip$ phases. In the topologically nontrivial BCS phase we identify the chiral fermion modes localized on the topological defects and compute their low-energy spectrum.

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Sergej Moroz, Carlos Hoyos, Leo Radzihovsky. 2016-01-26. Chiral $p\pm ip$ superfluid on a sphere. https://doi.org/10.1103/physrevb.93.024521

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