### Abstract

We have calculated resonance energies and partial widths for two two-dimensional models of van der Waals molecule predissociation. We use a general method involving only Hamiltonian and overlap integrals in a square integrable (ℒ^{2}) basis set containing a scale parameter. We use a stabilization method with a compactness criterion to find the resonance energies, and a decoupled golden rule method to find the partial widths. The results are compared to accurate energies and partial widths obtained by fitting solutions of the close-coupling equations to multichannel Breit-Wigner expressions. We studied resonances having two open channels for two sets of potential parameters, and in each case we obtained an accuracy of 16% or better for both partial widths by the ℒ^{2} method.

Original language | English (US) |
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Pages (from-to) | 3667-3677 |

Number of pages | 11 |

Journal | The Journal of chemical physics |

Volume | 88 |

Issue number | 6 |

DOIs | |

State | Published - Jan 1 1988 |

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## Cite this

^{2}golden rule method to calculate partial widths for the decay of resonance states.

*The Journal of chemical physics*,

*88*(6), 3667-3677. https://doi.org/10.1063/1.453866