title: Mesoscopic superposition states in relativistic Landau levels.
abstract: We show that a linear superposition of mesoscopic states in relativistic Landau levels can be built when an external magnetic field couples to a relativistic spin 1/2 charged particle. Under suitable initial conditions, the associated Dirac equation produces unitarily superpositions of coherent states involving the particle orbital quanta in a well-defined mesoscopic regime. We demonstrate that these mesoscopic superpositions have a purely relativistic origin and disappear in the nonrelativistic limit.
authors.affiliation: Departamento de Física Teórica I, Universidad Complutense, 28040 Madrid, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Bermudez
authors.forename: M A
authors.initials: MA
authors.lastname: Martin-Delgado
authors.forename: E
authors.initials: E
authors.lastname: Solano