title: Stabilization of a light bullet in a layered Kerr medium with sign-changing nonlinearity.
abstract: Using the numerical solution of the nonlinear Schrödinger equation and a variational method, it is shown that ( 3+1 ) -dimensional spatiotemporal optical solitons, known as light bullets, can be stabilized in a layered Kerr medium with sign-changing nonlinearity along the propagation direction.
authors.affiliation: Instituto de Física Teórica, Universidade Estadual Paulista, 01.405-900 São Paulo, São Paulo, Brazil.
authors.forename: Sadhan K
authors.initials: SK
authors.lastname: Adhikari