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math.NA2020★ 1 cited
A fast iterative algorithm for near-diagonal eigenvalue problems
Maseim Kenmoe, Ronald Kriemann, Matteo Smerlak +1
We introduce a novel eigenvalue algorithm for near-diagonal matrices inspired by Rayleigh-Schrödinger perturbation theory and termed Iterative Perturbative Theory (IPT). Contrary t…
math-ph2020
Dynamical perturbation theory for eigenvalue problems
Maseim Kenmoe, Matteo Smerlak, Anton Zadorin
Many problems in physics, chemistry and other fields are perturbative in nature, i.e. differ only slightly from related problems with known solutions. Prominent among these is the…