Creating p-wave superfluids and topological excitations in optical lattices

TitleCreating p-wave superfluids and topological excitations in optical lattices
Publication TypeJournal Article
Year of Publication2010
AuthorsMassignan, P, Sanpera, A, Lewenstein, M
Refereed DesignationRefereed
JournalPhys. Rev. A
Volume81
Issue3
Pagination031607
Date PublishedMar/2010
Abstract

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.

URLhttp://link.aps.org/doi/10.1103/PhysRevA.81.031607
DOI10.1103/PhysRevA.81.031607
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