{ "id": "2202.00944", "version": "v1", "published": "2022-02-02T10:37:39.000Z", "updated": "2022-02-02T10:37:39.000Z", "title": "Inverse problems for locally perturbed lattices -- Discrete Hamiltonian and quantum graph", "authors": [ "Emilia BlÄsten", "Pavel Exner", "Hiroshi Isozaki", "Matti Lassas", "Jinpeng Lu" ], "comment": "36 pages, 4 figures", "categories": [ "math-ph", "math.MP", "math.SP" ], "abstract": "We consider the inverse scattering problems for two types of Schr\\\"odinger operators on locally perturbed periodic lattices. For the discrete Hamiltonian, the knowledge of the S-matrix for all energies determines the graph structure and the coefficients of the Hamiltonian. For locally perturbed equilateral metric graphs, the knowledge of the S-matrix for all energies determines the graph structure.", "revisions": [ { "version": "v1", "updated": "2022-02-02T10:37:39.000Z" } ], "analyses": { "subjects": [ "81U40", "47A40" ], "keywords": [ "locally perturbed lattices", "discrete hamiltonian", "inverse problems", "quantum graph", "graph structure" ], "note": { "typesetting": "TeX", "pages": 36, "language": "en", "license": "arXiv", "status": "editable" } } }