Functional bosonization with time dependent perturbations

CARLOS M. NAÓN, MARIANO J. SALVAY, MARTA L. TROBO

INTERNATIONAL JOURNAL OF MODERN PHYSICS A

World Scientific

Lugar: Singapur; Año: 2004 vol. 19 p. 4953 - 4971

0217-751X

We extend a path-integral approach to bosonization previously developed in the framework of equilibrium Quantum Field Theories, to the case in which time-dependent interactions are taken into account. In particular we consider a non covariant version of the Thirring model in the presence of a dynamic barrier at zero temperature. By using the Closed Time Path (Schwinger-Keldysh) formalism, we compute the Green´s function and the Total Energy Density of the system. Since our model contains the Tomonaga Luttinger model as a particular case, we make contact with recent results on non-equilibrium electronic systems.