Complex twisted superfluids

may shed new light on the molecular orbitals and the electronic dynamics in real molecular systems. We propose a method to simulate molecules with well-controllable atoms at ultracold temperatures and show how to image the molecular orbitals with high resolution...

Phys. Rev. X 5, 031016 (2015),
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While conventional tunneling is “only single-particle physics”, we identify an interaction-driven tunneling process for atoms in optical lattices. While this possibility was discussed for solids, it could never have been observed directly. In optical lattices, this kind of tunneling is pronounced...