Archive ouverte HAL – Three-body interaction near a narrow two-body zero crossing

A. Pricoupenko 1 D. S. Petrov 1

A. Pricoupenko, D. S. Petrov. Three-body interaction near a narrow two-body zero crossing. Physical Review A, American Physical Society 2019, 100 (4), ⟨10.1103/PhysRevA.100.042707⟩. ⟨hal-02395504⟩

We calculate the effective three-body force for bosons interacting with each other by a two-body potential tuned to a narrow zero crossing in any dimension. We use the standard two-channel model parametrized by the background atom-atom interaction strength, the amplitude of the open-channel to closed-channel coupling, and the atom-dimer interaction strength. The three-body force originates from the atom-dimer interaction, but it can be dramatically enhanced for narrow crossings, i.e., for small atom-dimer conversion amplitudes. This effect can be used to stabilize quasi-two-dimensional dipolar atoms and molecules.

  • 1. LPTMS - Laboratoire de Physique Théorique et Modèles Statistiques