### Abstract

The complete set of second-, third-, and fourth-order van der Waals coefficients C n up to n=32 for the H(1s)-H(1s) dimer have been determined. They are computed by diagonalizing the nonrelativistic Hamiltonian for hydrogen to obtain a set of pseudostates that are used to evaluate the appropriate sum rules. A study of the convergence pattern for n?16 indicates that all the C n?16 coefficients are accurate to 13 significant digits. The relative size of the fourth-order C n (4) to the second-order C n (2) coefficients is seen to increase as n increases and at n=32 the fourth-order term is actually larger. �2005 The American Physical Society.

Original language | English |
---|---|

Pages (from-to) | 32709-32713 |

Number of pages | 5 |

Journal | Physical Review A - Atomic, Molecular, and Optical Physics |

Volume | 71 |

Issue number | 3 |

Publication status | Published - 2005 |

## Fingerprint Dive into the research topics of 'Higher-order C n dispersion coefficients for hydrogen'. Together they form a unique fingerprint.

## Cite this

Mitroy, J., & Bromley, M. (2005). Higher-order C n dispersion coefficients for hydrogen.

*Physical Review A - Atomic, Molecular, and Optical Physics*,*71*(3), 32709-32713.