Creating p-wave superfluids and topological excitations in optical lattices

Details Creating p-wave superfluids and topological excitations in optical lattices Creating p-wave superfluids and topological excitations in optical lattices

2009-08-31

arxiv.org/abs/0908.4568v3

Physical Review A 81, 031607(R) (2010)

Physics

Condensed Matter

Quantum Gases

Published version

Scientific paper

10.1103/PhysRevA.81.031607

We propose to realize a p-wave superfluid using bosons mixed with a single species of fermions in a deep optical lattice. We analyze with a self-consistent method its excitation spectrum in presence of a vortex, and we point out the range of interaction strengths in which the zero-energy mode with topological character exists on a finite optical lattice. Lattice effects are strongest close to fermionic half-filling: here the linearity of the low-lying spectrum is lost, and a new class of extended zero-energy modes with checkerboard structure and d-wave symmetry appears.

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