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arXiv · 2502.20318

Non-relativistic limit of Dirac Hamiltonians with Aharonov-Bohm fields

Matteo Gallone·Alessandro Michelangeli·Diego Noja
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Abstract

We characterise the families of self-adjoint Dirac and Schr\"{o}dinger operators with Aharonov-Bohm magnetic field, and we exploit the non-relativistic limit of infinite light speed to connect the former to the latter. The limit consists of the customary removal of the rest energy and of a suitable scaling, with the light speed, of the short-scale boundary condition of self-adjointness. This ensures that the scattering length of the Aharonov-Bohm interaction is preserved along the limit. Noteworthy is the fact that the whole family of Dirac-AB operators is mapped, in the non-relativistic limit, into the physically relevant sub-family of $s$-wave, angular-momentum-commuting, Schr\"{o}\-dinger-AB Hamiltonians with relativistic Dirac approximants.

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Matteo Gallone, Alessandro Michelangeli, Diego Noja. 2025-02-27. Non-relativistic limit of Dirac Hamiltonians with Aharonov-Bohm fields. https://arxiv.org/abs/2502.20318

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