Anisotropic effects of background fields on Born-Infeld electromagnetic waves
نویسندگان
چکیده
We show exact solutions of the Born-Infeld theory for electromagnetic plane waves propagating in the presence of static background fields. The non-linear character of the Born-Infeld equations generates an interaction between the background and the wave that changes the speed of propagation and adds a longitudinal component to the wave. As a consequence, in a magnetic background the ray direction differs from the propagation direction –a behavior resembling the one of a wave in an anisotropic medium–. This feature could open up a way to experimental tests of the Born-Infeld theory.
منابع مشابه
Born-infeld Cosmologies
Received We present a model for an inhomogeneous and anisotropic early universe filled with a nonlinear electromagnetic field of Born-Infeld (BI) type. The effects of the BI field are compared with the linear case (Maxwell). Since the curvature invaria nts are well behaved then we conjecture that our model does not present an initial big bang singularity. The existence of the BI field modifies ...
متن کامل2 00 6 Ultrarelativistic sources in nonlinear electrodynamics
The fields of rapidly moving sources are studied within nonlinear electrodynamics by boosting the fields of sources at rest. As a consequence of the ultrarelativistic limit the δ–like electromagnetic shock waves are found. The character of the field within the shock depends on the theory of nonlinear electrodynamics considered. In particular, we obtain the field of an ultrarelativistic charge i...
متن کاملBorn-Infeld effects in the electromagnetic mass of an extended Dirac particle
In the last few years severa, l models of extended fermions have been shown to provide a fair account of the main properties of the nucleons. ' ' In particular they give a good description of the electromagnetic radii'and the form factors at low momentum transfer. All these models are based on a Dirac field with a fourth-order self-coupling term which allows the existence of finite-energy, loca...
متن کاملPropagation and Interaction of Electrostatic and Electromagnetic Waves in Two Stream Free Electron Laser in the Presence of Self-Fields
A relativistic theory for two-stream free electron laser (FEL) with a one-dimensional helical wiggler and ion-channel guiding in the presence of self-fields are presented. A dispersion relation (DR) which includes coupling between the electromagnetic and the electrostatic waves is derived from a fluid model, with all of the relativistic terms related to the transverse wiggler motion. This DR is...
متن کاملEffects of Magnetic Fields on String Pair Creation
The rate of pair production of open strings in general uniform electromagnetic fields is calculated in various space-time dimensions. The corrections with respect to the case of pure electric backgrounds are displayed. In particular, a contribution in the form of a Born-Infeld action is derived and its role in the present context emphasized
متن کامل