On the spectrum of magnetic Dirac operators with Coulomb-type perturbations

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dc.creatorRichard, Serge
dc.creatorde Aldecoa, Rafael Tiedra
dc.date2006-11-26
dc.date.accessioned2026-07-07T07:32:22Z
dc.date.available2026-07-07T07:32:22Z
dc.descriptionWe carry out the spectral analysis of singular matrix valued perturbations of 3-dimensional Dirac operators with variable magnetic field of constant direction. Under suitable assumptions on the magnetic field and on the perturbations, we obtain a limiting absorption principle, we prove the absence of singular continuous spectrum in certain intervals and state properties of the point spectrum. Constant, periodic as well as diverging magnetic fields are covered, and Coulomb potentials up to the physical nuclear charge Z<137 are allowed. The importance of an internal-type operator (a 2-dimensional Dirac operator) is also revealed in our study. The proofs rely on commutator methods.
dc.description13 pages
dc.identifierhttps://arxiv.org/abs/math-ph/0611072
dc.identifierhttp://arxiv.org/abs/math-ph/0611072
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/119093
dc.subjectMathematical Physics
dc.subject34L40; 46N50; 81Q10
dc.titleOn the spectrum of magnetic Dirac operators with Coulomb-type perturbations
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