Quantum fluids of self-assembled chains of polar molecules

Abstract

We study polar molecules in a stack of strongly confined pancake traps. When dipolar moments point perpendicular to the planes of the traps and are sufficiently strong, the system is stable against collapse but attractive interaction between molecules in different layers leads to the formation of extended chains of molecules, analogously to the chaining phenomenon in classical rheological electro- and magnetofluids. We analyze properties of the resulting quantum liquid of dipolar chains and show that only the longest chains undergo Bose-Einstein condensation with a strongly reduced condensation temperature. We discuss several experimental methods for studying chains of dipolar molecules.

4 pages and 3 figures, final version as published

References in corpus (4)

• Observation of dipole-dipole interaction in a degenerate quantum gas
• Quo vadis, cold molecules? - Editorial review
• Interference of an array of independent Bose-Einstein condensates
• Exact hydrodynamics of a trapped dipolar Bose-Einstein condensate

Cited by in corpus (10)

• Mott-insulator phases of non-locally coupled 1D dipolar Bose gases
• Quantum phase transitions of polar molecules in bilayer systems
• Mechanism of Collisional Spin Relaxation in Triplet-Sigma Molecules
• Meta-nematic, smectic and crystalline phases of dipolar fermions in an optical lattice
• Dipolar bosons in a planar array of one-dimensional tubes
• Pseudo-potential of a power-law decaying interaction in two-dimensional systems
• Ground state of low dimensional dipolar gases: linear and zigzag chains
• An effective many-body theory for strongly interacting polar molecules
• Structure and melting behavior of classical bilayer crystals of dipoles
• Interaction-induced first order correlation between spatially-separated 1D dipolar fermions