Remarks on sine-Gordon kink–fermion system: localized modes and scattering Vakhid A. Gani, Anastasia Gorina, Ilya Perapechka and Yakov Shnir Eur. Phys. J. C, 82 8 (2022) 757 Published online: 29 August 2022 DOI: 10.1140/epjc/s10052-022-10707-0