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It is shown that the indefinite character of the charge in classical models of extended particles with confined constituents is a serious handicap since infinite amounts of positive and negative charge can be emitted in some solutions, causing a[...]texto impreso
The time evolution of expanded and contracted solitary waves of the Dirac field with scalar self-interaction is exhibited. It is shown that the positivity of the second variation of the energy functional is not a necessary condition for the stab[...]texto impreso
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The interaction dynamics for the minimum solitary waves of the classical Dirac field with scalar selfinteraction in 1+3 dimensions is exhibited. It is shown that the possibility to use these waves as models of elementary particles, as has been s[...]texto impreso
It is shown that the minimum solitary wave of a nonlinear spinorial model is unstable under charge-preserving deformations via a radiative decay. We analyze the cause of this decay.
