Trimer liquids and crystals of polar molecules in coupled wires

Details Trimer liquids and crystals of polar molecules in coupled wires Trimer liquids and crystals of polar molecules in coupled wires

2011-03-21

arxiv.org/abs/1103.4087v2

Phys. Rev. Lett. 107, 163202 (2011)

Physics

Condensed Matter

Quantum Gases

5 pages, 3 figures plus additional material; Accepted for publication in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.107.163202

We investigate the pairing and crystalline instabilities of bosonic and fermionic polar molecules confined to a ladder geometry. By means of analytical and quasi-exact numerical techniques, we show that gases of composite molecular dimers as well as trimers can be stabilized as a function of the density difference between the wires. A shallow optical lattice can pin both liquids, realizing crystals of composite bosons or fermions. We show that these exotic quantum phases should be realizable under current experimental conditions in finite-size confining potentials.

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