Fernández-Rañada, Antonio2023-06-212023-06-211979-01-151.- E.H. Lich, Rev. Mod. Phys. 48, 553, {1976). 2.- R. Finkelstein, C. Fronsdal and P. Kaus, Phys. Rev. 103, 1571,(1956). 3.- M. Soler, Phys. Bev. D 1, 2766, (1970). 4.- A.F. Rañada, M.F. Rañada, M. Soler and L. Vázquez, Phys. Rev. D 10, 517, (1974). 5.- A.F. Rañada, Int. J. Theor. Phys. 16, 795, (1977).0556-282110.1103/PhysRevD.19.493https://hdl.handle.net/20.500.14352/64909© 1979 The American Physical Society. This work was partially supported by Junta de Energía Nuclear, Spain.The Lieb form of the Heisenberg relations is applied to the kinks of a nonlinear Dirac field. It is found that these relations are violated for large enough values of the self-coupling constant. A close relation between this violation and the norm of the kinks is established.engjournal articlehttp://dx.doi.org/10.1103/PhysRevD.19.493http://journals.aps.orgopen access537ElectricidadElectrónica (Física)2202.03 Electricidad