On the presence of electric dipole and toroidal moments in non-Hermitian QED

Autor: R. Bufalo, Nathan B. Xavier
Jazyk: angličtina
Rok vydání: 2025
Předmět:
Zdroj: Physics Letters B, Vol 860, Iss , Pp 139167- (2025)
Druh dokumentu: article
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2024.139167
Popis: We study in this paper non-relativistic properties of the non-hermitian and PT symmetric QED, in special the Pauli-Schrödinger Hamiltonian. It is shown that the scattering potential computed in terms of the Born approximation receives phenomenological modifications due to non-hermitian effects. In one side, we observe that the non-hermiticity changes the electric coupling as well as the magnetic coupling; on the other hand, and more important, the model induces two new types of phenomenological interactions: i) an electric dipole coupling and ii) a toroidal coupling. Under the light of these results, and also that the extraordinary agreement of the Standard Model with experiment nearly excludes any significant amount of non-Hermitian couplings, we establish an analysis for each coupling in terms of their experimental data to set stringent bounds upon the axial parameters of the non-hermitian model.
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