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hep-th2026
Chirality loss during brane merging: a universal power law from the Jackiw-Rebbi index
H. P. Pinheiro, C. A. S. Almeida
We investigate the rate at which chiral fermion localisation is lost when two domain walls merge in extra-dimensional braneworld scenarios, using the -dimensional Jackiw-Reb…
hep-th2026
Aharonov--Casher effect from a supersymmetric N=1 D=4 model with Kalb--Ramond Lorentz-violating background: a SUSY-preserving mechanism via the Fayet--Iliopoulos term
L. A. S. Nunes, C. A. S. Almeida
The Aharonov--Casher (AC) effect describes the geometric phase acquired by a neutral particle carrying a magnetic dipole moment moving in an external electric field. In supersymmet…
hep-th2026
Chiral Fermion Localization in Two-Kink Scalar Backgrounds: Tunable Brane Positioning and Universal Divergence at the Single-Kink Limit
H. P. Pinheiro, C. A. S. Almeida
The localization of chiral fermionic zero modes in scalar field backgrounds with domain wall structure is a central mechanism in brane-world scenarios. We investigate this mechanis…