title: Time scales in rotating unstable Langevin-type dynamics.
abstract: In this Rapid Communication we propose a different and general characterization of rotating, unstable Langevin-type dynamics in the presence of an external force in the context of two dynamical representations x and y, using the passage time distribution. Here y is the transformed space of coordinates obtained by means of a time-dependent rotation matrix. The Langevin dynamics in the new y space defines an interesting concept of external force and internal noise due to rotation. The theory is applied to the characterization of rotational unstable systems of two (such as the laser system) and three variables, and stimulates its application in other fields, for instance, in plasma physics.
authors.affiliation: Departamento de Física, Universidad Autónoma Metropolitana Iztapalapa, Apartado Postal 55-534, México, Distrito Federal, 09340 Mexico. ines@xanum.uam.mx
authors.forename: J I
authors.initials: JI
authors.lastname: Jiménez-Aquino
authors.forename: M
authors.initials: M
authors.lastname: Romero-Bastida