Elementary commutator method for the Dirac equation with long-range perturbations

Fuente: arXiv
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Autori principali: Arita, Shinichi, Ito, Kenichi
Natura: Preprint
Pubblicazione: 2025
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author Arita, Shinichi
Ito, Kenichi
author_facet Arita, Shinichi
Ito, Kenichi
contents We present direct and elementary commutator techniques for the Dirac equation with long-range electric and mass perturbations. The main results are absence of generalized eigenfunctions and locally uniform resolvent estimates, both in terms of the optimal Besov-type spaces. With an additional massless assumption, we also obtain an algebraic radiation condition of projection type. For their proofs, following the scheme of Ito-Skibsted, we adopt, along with various weight functions, the generator of radial translations as conjugate operator, and avoid any of advanced functional analysis, pseudodifferential calculus, or even reduction to the Schrödinger equation. The results of the paper would serve as a foundation for the stationary scattering theory of the Dirac operator.
format Preprint
id arxiv_https___arxiv_org_abs_2511_08209
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Elementary commutator method for the Dirac equation with long-range perturbations
Arita, Shinichi
Ito, Kenichi
Mathematical Physics
Analysis of PDEs
Functional Analysis
Spectral Theory
We present direct and elementary commutator techniques for the Dirac equation with long-range electric and mass perturbations. The main results are absence of generalized eigenfunctions and locally uniform resolvent estimates, both in terms of the optimal Besov-type spaces. With an additional massless assumption, we also obtain an algebraic radiation condition of projection type. For their proofs, following the scheme of Ito-Skibsted, we adopt, along with various weight functions, the generator of radial translations as conjugate operator, and avoid any of advanced functional analysis, pseudodifferential calculus, or even reduction to the Schrödinger equation. The results of the paper would serve as a foundation for the stationary scattering theory of the Dirac operator.
title Elementary commutator method for the Dirac equation with long-range perturbations
topic Mathematical Physics
Analysis of PDEs
Functional Analysis
Spectral Theory
url https://arxiv.org/abs/2511.08209