### Abstract

Using the periodic orbit theory, we evaluate the form factor of a quantum graph to which a very weak magnetic field is applied. The first correction to the diagonal approximation describing the transition between the universality classes is shown to be in agreement with Pandey and Mehta's formula of parametric random matrix theory.

Original language | English |
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Pages (from-to) | 353-358 |

Number of pages | 6 |

Journal | Physics Letters, Section A: General, Atomic and Solid State Physics |

Volume | 311 |

Issue number | 4-5 |

DOIs | |

Publication status | Published - 2003 May 19 |

Externally published | Yes |

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### Keywords

- Periodic orbit theory
- Quantum graph
- Random matrix

### ASJC Scopus subject areas

- Physics and Astronomy(all)