Lorentz-invariance and gauge-invariance of the Aharonov–Bohm phase A. L. Kholmetskii, O. V. Missevitch and T. Yarman Eur. Phys. J. Plus, 140 2 (2025) 140 Published online: 18 February 2025 DOI: 10.1140/epjp/s13360-025-06083-9