Anomalous quantum mass flow of atoms in p-wave resonance

Details Anomalous quantum mass flow of atoms in p-wave resonance Anomalous quantum mass flow of atoms in p-wave resonance

2005-03-26

arxiv.org/abs/cond-mat/0503622v2

Phys. Rev. A 72, 053613 (2005)

Physics

Condensed Matter

Other Condensed Matter

5 pages, 2 figures; added references and discussion about He-3 (v.2)

Scientific paper

10.1103/PhysRevA.72.053613

I analyze an atomic Fermi gas with a planar p-wave interaction, motivated by the experimentally observed anisotropy in p-wave Feshbach resonances. An axial superfluid state is verified. A domain wall object is discovered to be a new topological defect of this superfluid and an explicit solution has been found. Gapless quasiparticles appear as bound states on the wall, dispersing in the space of reduced dimensions. Surprisingly, they are chiral, deeply related to fermion zero modes and anomalies in quantum chromodynamics. The chirality of the superfluid is manifested by a persistent anomalous mass current of atoms in the groundstate. This spectacular quantum phenomenon is a prediction for future experiments.

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