Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2005-10-22
Physics
Condensed Matter
Strongly Correlated Electrons
12 pages, 2 figures, to appear in the proceedings of the Peyres conference
Scientific paper
10.1063/1.2178048
We revisit the concept of superfluidity in bosonic lattice models in low dimensions. Then, by using numerical and analytical results obtained previously for equivalent spinless fermion models, we show that the gapless phase of 1D interacting bosons may be either superfluid or -remarkably- metallic and not superfluid. The latter phase -the Bose metal- should be, according to the mentioned results, a robust and stable phase in 1D. In higher dimensionalities we speculate on the possibility of a stable Bose metallic phase on the verge of a Mott transition.
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