Berry's phase under topology change

Laplacians on metric graphs are used to construct continuous families of Hamiltonians with different topological structure. One such family is used to demonstrate that Hamiltonians with real-valued eigenfunctions may possess non-trivial geometric Berry's phase. Connections between non-trivial Berry's phase and topology change are discussed. --- Source: arXiv:2605.10798v1 - http://arxiv.org/abs/2605.10798v1 PDF: https://arxiv.org/pdf/2605.10798v1 Original Link: http://arxiv.org/abs/2605.10798v1...