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math-ph2024
Continuum limit of resonances for discrete Schrödinger operators
Kentaro Kameoka, Shu Nakamura
We consider complex resonances for discrete and continuous Schrödinger operators, and we show that the resonances of discrete models converge to resonances of continuous models in…
math-ph2024★ 1 cited
Equivalence of the staggered fermion Hamiltonan and the discrete Hodge-Dirac operator on square lattices
Shu Nakamura
We show that the free massless staggered fermion (or the KS-fermion) Hamiltonian is equivalent to a discrete Hodge-Dirac operator on the -dimensional square lattice $h\mathbb{Z}…