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Publication Citation: Creating a supersolid in one-dimensional Bose mixtures

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Author(s): Ludwig G. Mathey; Ippei Danshita; Charles W. Clark;
Title: Creating a supersolid in one-dimensional Bose mixtures
Published: January 15, 2009
Abstract: We identify a one-dimensional supersolid phase in a binary mixture of near-hardcore bosons with weak, local interspecies repulsion. We find realistic conditions under which such a phase, defined here as the coexistence of quasi-superfluidity and quasi-charge density wave order, can be produced and verified in finite ultra-cold atom systems in a harmonic trap. Our analysis is based on Luttinger liquid theory supported with numerical calculations using the time-evolving block decimation method. Clear experimental signatures of these two orders can be found, respectively, in time-of-flight interference patterns, and the structure factor S(k) derived from density correlations.
Citation: Physical Review Letters
Volume: 79
Issue: 011602R
Pages: 4 pp.
Keywords: supersolid; ultra-cold; atoms; optical lattice; Luttinger liquid; TEBD; DMRG; superfluid; charge density wave; structure factor; time-of-flight; interference
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