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arxiv 2304.04479 v3 pith:7N7SXMJE submitted 2023-04-10 hep-th

Evolution of Fermion Resonance in Thick Brane

classification hep-th
keywords branediracequationevolutioncorrespondinglargemodesresonance
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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In this work, we investigate numerical evolution of massive Kaluza-Klein (KK) modes of a Dirac field on a thick brane. We deduce the Dirac equation in five-dimensional spacetime, and obtain the time-dependent evolution equation and Schr\"odinger-like equation of the extra-dimensional component. We use the Dirac KK resonances as the initial data and study the corresponding dynamics. By monitoring the decay law of the left- and right-chiral KK resonances, we compute the corresponding lifetimes and find that there could exist long-lived KK modes on the brane. Especially, for the lightest KK resonance with a large coupling parameter and a large three momentum, it will have an extremely long lifetime.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Quasinormal modes of scalar perturbations in Rastall thick brane

    gr-qc 2026-07 conditional novelty 5.0

    The graviscalar quasinormal mode spectrum and late-time power-law tails of a Rastall thick brane are computed numerically, showing that the Rastall parameter λ controls mode lifetimes and tail exponents.

  2. Real Part Emergence in Purely Imaginary Quasinormal Modes in Perturbed de Sitter Braneworlds

    gr-qc 2026-06 unverdicted novelty 5.0

    Perturbations on a thick de Sitter brane induce a real part in previously purely imaginary quasinormal modes, creating intermediate oscillatory signatures in time-domain signals while late-time behavior stays zero-mod...