Effective potential in Lorentz-breaking field theory models A. P. Baeta Scarpelli, L. C. T. Brito, J. C. C. Felipe, J. R. Nascimento and A. Yu. Petrov Eur. Phys. J. C, 77 12 (2017) 850 Published online: 09 December 2017 DOI: 10.1140/epjc/s10052-017-5430-4