Interaction-induced first order correlation between spatially-separated 1D dipolar fermions

Details Interaction-induced first order correlation between spatially-separated 1D dipolar fermions Interaction-induced first order correlation between spatially-separated 1D dipolar fermions

2008-07-08

arxiv.org/abs/0807.1166v2

Phys. Rev. A 79, 053630 (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

Same as the published version

Scientific paper

10.1103/PhysRevA.79.053630

We calculate the ground-state properties of fermionic dipolar atoms or molecules in a one-dimensional double-tube potential by using the Luttinger liquid theory and the density matrix renormalization-group calculation. When the external field is applied near a magic angle with respect to the double-tube plane, the long-ranged dipolar interaction can generate a spontaneous correlation between fermions in different tubes, even when the bare intertube tunneling rate is negligibly small. Such interaction-induced correlation strongly enhances the contrast of the interference fringes and therefore can be easily observed in the standard time-of-flight experiment.

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