Author: M. Novello

Discontinuities in nonlinear field theories propagate through null geodesics in an effective metric that depends on…

We introduce an extension of the Born-Infeld action for a scalar field and show that it…

The electromagnetic force a photon undergoes in a nonlinear regime can be geometrized. This is a…

We show that the propagation of photons in a nonlinear dielectric medium can be described in…