s-Wave Scattering Resonances Induced by Dipolar Interactions of Polar Molecules

Abstract

We show that s-wave scattering resonances induced by dipolar interactions in a polar molecular gas have a universal large and positive effective range, which is very different from Feshbach resonances realized in cold atoms before, where the effective range is either negligible or negative. Such a difference has important consequence in many-body physics. At high temperature regime, a positive effective range gives rise to stronger repulsive interaction energy for positive scattering length, and weaker attractive interaction energy for negative scattering length. While at low-temperatures, we study polaron problem formed by single impurity molecule, and we find that the polaron binding energy increases at the BEC side and decreases at the BCS side. All these effects are in opposite to narrow Feshbach resonances where the effective range is negative.

5 pages, 3 figures, published version

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Cited by in corpus (11)

• Dipolar-Induced Resonance for Ultracold Bosons in a Quasi-1D Optical Lattice
• The neutron polaron as a constraint on nuclear density functionals
• Ultra-cold Fermi gases with resonant dipole-dipole interaction
• Fermion Pairing across a Dipolar Interaction Induced Resonance
• Itinerant ferromagnetism with finite ranged interactions
• Quasi-One-Dimensional Dipolar Quantum Gases
• Many-body properties of quasi-one dimensional Boson gas across a narrow CIR
• Effect of short-range interaction for collision of ultracold dipoles
• Matter waves in two-dimensional arbitrary atomic crystals
• Wigner crystal induced by dipole-dipole interaction in one-dimensional optical lattices
• Exotic Quantum States in Spin-1 Bose-Einstein Condensate with Spin-Orbit Coupling in Concentric Annular Traps