Phys. Rev. D 1, 2766–2769 (1970)Classical, Stable, Nonlinear Spinor Field with Positive Rest EnergyReceived 2 January 1970; published in the issue dated 15 May 1970 The influence of nonlinear (fourth-order) terms in the Lagrangians of some classical relativistic field theories is investigated, independently of the mass and coupling-constant parameters. In the spinor case, stable localized configurations with a lowest energy state are shown to exist always for positive values of the coupling constant. © 1970 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.1.2766
DOI:
10.1103/PhysRevD.1.2766
PACS:
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