Title | Stability of closed gaps for the alternating Kronig-Penney Hamiltonian |

Publication Type | Preprint |

2015 | |

Authors | Michelangeli, A, Monaco, D |

Document Number | SISSA;16/2015/MATE |

Institution | SISSA |

We consider the Kronig-Penney model for a quantum crystal with equispaced periodic delta-interactions of alternating strength. For this model all spectral gaps at the centre of the Brillouin zone are known to vanish, although so far this noticeable property has only been proved through a very delicate analysis of the discriminant of the corresponding | |

http://urania.sissa.it/xmlui/handle/1963/34460 |

## Stability of closed gaps for the alternating Kronig-Penney Hamiltonian

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