Title | Creating p-wave superfluids and topological excitations in optical lattices |
Publication Type | Journal Article |
Year of Publication | 2010 |
Authors | Massignan, P, Sanpera, A, Lewenstein, M |
Refereed Designation | Refereed |
Journal | Phys. Rev. A |
Volume | 81 |
Issue | 3 |
Pagination | 031607 |
Date Published | Mar/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. |
URL | https://link.aps.org/doi/10.1103/PhysRevA.81.031607 |
DOI | 10.1103/PhysRevA.81.031607 |
