Asymptotic model for shape resonance control of diatomics by intense non-resonant light.

Abstract

We derive a universal model for atom pairs interacting with non-resonant light via the
polarizability anisotropy, based on the long range properties of the scattering. 
The corresponding dynamics can be obtained using a nodal line technique to solve the 
asymptotic Schrödinger equation. It consists in imposing physical boundary conditions 
at long range and vanishing of the wavefunction at a position separating inner zone 
and asymptotic region. We show that nodal lines which depend on the intensity of the 
non-resonant light can satisfactorily account for the effect of the polarizability at 
short range. The approach allows to determine the resonance structure, energy, width,
channel mixing and hybridization even for narrow resonances.