Journal
PHYSICAL REVIEW A
Volume 81, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.81.031607
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Funding
- Spanish MEC Projects [FIS2008-00784, FIS2008-01236]
- QOIT
- ESF/MEC [FIS2007-29996-E]
- EU
- ERC
- Alexander von Humboldt Foundation
- ICREA Funding Source: Custom
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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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