Antikink dispersions of the J1–J2 sawtooth spin-1/2 anisotropic Heisenberg antiferromagnetic chain Susobhan Paul and Asim Kumar Ghosh Eur. Phys. J. B, 92 2 (2019) 40 Published online: 18 February 2019 DOI: 10.1140/epjb/e2019-90714-9