Bound states of dipolar molecules studied with the Berggren expansion method

Abstract

Bound states of dipole-bound negative anions are studied by using a non-adiabatic pseudopotential method and the Berggren expansion involving bound states, decaying resonant states, and non-resonant scattering continuum. The method is benchmarked by using the traditional technique of direct integration of coupled channel equations. A good agreement between the two methods has been found for well-bound states. For weakly-bound subthreshold states with binding energies comparable with rotational energies of the anion, the direct integration approach breaks down and the Berggren expansion method becomes the tool of choice.

12 pages, 10 figures

References in corpus (6)

• Shell Model in the Complex Energy Plane
• Efimov states and their Fano resonances in a neutron-rich nucleus
• Antibound States and Halo Formation in the Gamow Shell Model
• The rigged Hilbert space approach to the Gamow states
• Tunnelling of plane waves through a square barrier
• Description of resonances within the rigged Hilbert space

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