activity
20242026
collaborators

6 papers

math.SP2026

Inverse scattering in an asymptotically flat multilayer domain

Michel Cristofol, Yves Dermenjian, Hiroshi Isozaki +1

We consider a scattering problem for a wave equation in a multilayer domain $Ω\subset {\bf R}^{n+1}_x =…

math.AP2026

Rellich type theorem and unique continuation property for discrete Maxwell operators

Hiroshi Isozaki, Olivier Poisson

We study the Rellich type theorem (RT) for the Maxwell operator __ D = D____0 on Z3 in a constant anisotropic medium, i.e., the permittivity and permeability of which are constant…

math-ph2025

Scattering for time periodic Hamiltonians on graphs

Hiroshi Isozaki, Evgeny, L. Korotyaev

We develop a scattering theory for time-periodic Hamiltonians on discrete graphs, including long-range potentials with zero average for the period, and show the existence and compl…

math.SP2025

A remark on the absence of eigenvalues in continuous spectra for discrete Schrödinger operators on periodic lattices

Kazunori Ando, Hiroshi Isozaki, Hisashi Morioka

We prove a Rellich-Vekua type theorem for Schrödinger operators with exponentially decreasing potentials on a class of lattices including square, triangular, hexagonal lattices an…

math.AP2025

Inverse scattering problems for non-linear wave equations on Lorentzian manifolds

Spyros Alexakis, Hiroshi Isozaki, Matti Lassas +1

We show that an inverse scattering problem for a semilinear wave equation can be solved on a manifold having an asymptotically Minkowskian infinity, that is, scattering functionals…

math-ph2024

Inverse problems for quantum graph associated with square and hexagonal lattices

K. Ando, E. Blåsten, P. Exner +5

We solve inverse problems from the D-N map for the quantum graph on a finite domain in a square lattice and that on a hexagonal lattice, as well as inverse scattering problems from…