Nonperturbative approach to backscattering off a dynamical impurity in one-dimensional Fermi systems

We investigate the problem of backscattering off a time-dependent impurity in a one-dimensional electron gas. By combining the Schwinger-Keldysh method with an adiabatic approximation in order to deal with the corresponding out of equilibrium Dirac equation, we compute the total energy density (TED)...

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Detalles Bibliográficos
Autores principales: Barci, Daniel G., Moriconi, Luca, Moriconi, M., Naón, Carlos María, Salvay, Mariano J.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2005
Materias:
Ciencias Exactas
Física
Backscattering
Physics
Schwinger-Keldysh method
Total energy density (TED)
Fermion
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125871
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:We investigate the problem of backscattering off a time-dependent impurity in a one-dimensional electron gas. By combining the Schwinger-Keldysh method with an adiabatic approximation in order to deal with the corresponding out of equilibrium Dirac equation, we compute the total energy density (TED) of the system. We show how the free fermion TED is distorted by the backscattering amplitude and the geometry of the impurity.

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