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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/36641

Title: Asymptotic model for shape resonance control of diatomics by intense non-resonant light
Authors: Crubellier, Anne
González-Férez, Rosario
Koch, Christiane P.
Luc-Koening, Eliane
Issue Date: 2015
Abstract: Non-resonant light interacting with diatomics via the polarizability anisotropy couples different rotational states and may lead to strong hybridization of the motion. The modification of shape resonances and low-energy scattering states due to this interaction can be fully captured by an asymptotic model, based on the long-range properties of the scattering (Crubellier et al 2015 New J. Phys. 17 045020). Remarkably, the properties of the field-dressed shape resonances in this asymptotic multi-channel description are found to be approximately linear in the field intensity up to fairly large intensity. This suggests a perturbative single-channel approach to be sufficient to study the control of such resonances by the non-resonant field. The multi-channel results furthermore indicate the dependence on field intensity to present, at least approximately, universal characteristics. Here we combine the nodal line technique to solve the asymptotic Schrödinger equation with perturbation theory. Comparing our single channel results to those obtained with the full interaction potential, we find nodal lines depending only on the field-free scattering length of the diatom to yield an approximate but universal description of the field-dressed molecule, confirming universal behavior.
Sponsorship: Financial support by the Spanish project FIS2011-24540 (MICINN), grants P11-FQM-7276 (Junta de Andalucía), and by the Andalusian research group FQM-207.
Publisher: IOP Publishing
Keywords: Cold molecules
Shape resonances
URI: http://hdl.handle.net/10481/36641
ISSN: 1367-2630
Rights : Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License
Citation: Crubellier, A.; et al. Asymptotic model for shape resonance control of diatomics by intense non-resonant light: universality in the single-channel approximation. New Journal of Physics, 17: 045022 (2015). []
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