d'Avenia, PietroPisani, Lorenzo2020-07-152020-07-152002-03-04d'Avenia, P., & Pisani, L. (2002). Nonlinear Klein-Gordon equations coupled with Born-Infeld type equations. <i>Electronic Journal of Differential Equations, 2002</i>(26), pp. 1-13.1072-6691https://hdl.handle.net/10877/12090In this paper we prove the existence of infinitely many radially symmetric standing waves in equilibrium with their own electro-magnetic field. The interaction is described by means of the minimal coupling rule; on the other hand the Lagrangian density for the electro-magnetic field is the second order approximation of the Born-Infeld Lagrangian density.Text13 pages1 file (.pdf)enAttribution 4.0 InternationalNonlinear Klein-Gordon equationSolitary wavesElectromagnetic fieldVariational methodsArticle