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arXiv · 0807.1166

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

Chi-Ming Chang·Wei-Chao Shen·Chen-Yen Lai·Pochung Chen·Daw-Wei Wang
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Abstract

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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Chi-Ming Chang, Wei-Chao Shen, Chen-Yen Lai, Pochung Chen, Daw-Wei Wang. 2009-06-02. Interaction-induced first order correlation between spatially-separated 1D dipolar fermions. https://doi.org/10.1103/physreva.79.053630

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