### Abstract

It is shown that the ground state energy of the hamiltonian H = Σ Si · Si+1 + γΣSi · Si+2 for the linear antiferromagnetic Heisenberg chain with nearest and next-nearest neighbour interactions is equal to -3/2 if γ = 1/2.

Original language | Undefined |
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Article number | 10.1016/0375-9601(80)90662-3 |

Pages (from-to) | 261-262 |

Number of pages | 2 |

Journal | Physics letters A |

Volume | 77 |

Issue number | 4 |

DOIs | |

Publication status | Published - 26 May 1980 |

### Keywords

- EWI-10060
- IR-64077

## Cite this

van den Broek, P. M. (1980). Exact value of the ground state energy of the linear antiferromagnetic Heisenberg chain with nearest and next-nearest neighbour interactions.

*Physics letters A*,*77*(4), 261-262. [10.1016/0375-9601(80)90662-3]. https://doi.org/10.1016/0375-9601(80)90662-3