### Abstract

A new reliable numerical method is proposed for solving the two-state coupled equations with two linear potentials which intersect with opposite sign of slopes. The original coupling equations which suffer from a very rapid oscillation are transformed into a new form which gives ordinary sine and cosine solutions asymptotically. The amplitude and phase of the scattering matrix can be stably and accurately calculated.

Original language | English |
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Pages (from-to) | 9-17 |

Number of pages | 9 |

Journal | Computer Physics Communications |

Volume | 74 |

Issue number | 1 |

DOIs | |

State | Published - 1 Jan 1993 |

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## Cite this

Zhu, C., & Nakamura, H. (1993). Numerical method for the two-state linear curve crossing: nonadiabatic tunneling case.

*Computer Physics Communications*,*74*(1), 9-17. https://doi.org/10.1016/0010-4655(93)90102-I