Field-linked States of Ultracold Polar Molecules

Abstract

We explore the character of a novel set of ``field-linked'' states that were predicted in [A. V. Avdeenkov and J. L. Bohn, Phys. Rev. Lett. 90, 043006 (2003)]. These states exist at ultralow temperatures in the presence of an electrostatic field, and their properties are strongly dependent on the field's strength. We clarify the nature of these quasi-bound states by constructing their wave functions and determining their approximate quantum numbers. As the properties of field-linked states are strongly defined by anisotropic dipolar and Stark interactions, we construct adiabatic surfaces as functions of both the intermolecular distance and the angle that the intermolecular axis makes with the electric field. Within an adiabatic approximation we solve the 2-D Schrodinger equation to find bound states, whose energies correlate well with resonance features found in fully-converged multichannel scattering calculations.

References in corpus (14)

• Quantum computation with trapped polar molecules
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• Superfluid pairing in a polarized dipolar Fermi gas
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• Linking Ultracold Polar Molecules
• Collisional dynamics of ultracold OH molecules in an electrostatic field
• Collapse of Bose-Einstein condensate with dipole-dipole interactions
• Anisotropic pseudo-potential for polarized dilute quantum gases
• Ultracold collision properties of metastable alkaline-earth atoms
• Multichannel cold collisions between metastable Sr atoms
• Tensorial analysis of the long-range interaction between metastable alkaline-earth atoms
• Rotational Feshbach Resonances in Ultracold Molecular Collisions
• Hydrodynamic excitations of trapped dipolar fermions

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