Erratum to: Entangled neutrino states in a toy model QFT Jarah Evslin, Hosam Mohammed, Emilio Ciuffoli and Yao Zhou Eur. Phys. J. C, 80 3 (2020) 253 Published online: 19 March 2020 DOI: 10.1140/epjc/s10052-020-7790-4