Field-theoretical approach to non-local interactions: 1D electrons and fermionic impurities

We apply a recently proposed path-integral approach to non-local bosonization to a Thirring-like system modeling non-relativistic massless particles interacting with localized fermionic impurities. We consider forward-scattering processes described by symmetric potentials including interactions betw...

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Detalles Bibliográficos
Autores principales: Naón, Carlos María, Reichenbach, María Cecilia von, Trobo, Marta Liliana
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 1997
Materias:
Física
Effective action
Systems modeling
Physics
Electron
Dispersion relation
Bosonization
Fermi liquid theory
Massless particle
Quantum mechanics
Impurity
Forward scatter
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/123182
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-123182
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Effective action
Systems modeling
Physics
Electron
Dispersion relation
Bosonization
Fermi liquid theory
Massless particle
Quantum mechanics
Impurity
Effective action
Systems modeling
Physics
Electron
Dispersion relation
Bosonization
Fermi liquid theory
Forward scatter
Massless particle
Quantum mechanics
spellingShingle Física
Effective action
Systems modeling
Physics
Electron
Dispersion relation
Bosonization
Fermi liquid theory
Massless particle
Quantum mechanics
Impurity
Effective action
Systems modeling
Physics
Electron
Dispersion relation
Bosonization
Fermi liquid theory
Forward scatter
Massless particle
Quantum mechanics
Naón, Carlos María
Reichenbach, María Cecilia von
Trobo, Marta Liliana
Field-theoretical approach to non-local interactions: 1D electrons and fermionic impurities
topic_facet Física
Effective action
Systems modeling
Physics
Electron
Dispersion relation
Bosonization
Fermi liquid theory
Massless particle
Quantum mechanics
Impurity
Effective action
Systems modeling
Physics
Electron
Dispersion relation
Bosonization
Fermi liquid theory
Forward scatter
Massless particle
Quantum mechanics
description We apply a recently proposed path-integral approach to non-local bosonization to a Thirring-like system modeling non-relativistic massless particles interacting with localized fermionic impurities. We consider forward-scattering processes described by symmetric potentials including interactions between charge, current, spin and spin-current densities. In the general (spin-flipping) problem we obtain an effective action for the collective modes of the model at T = 0, containing WZW-type terms. When spin-flipping processes are disregarded the structure of the action is considerably simplified, allowing us to derive exact expressions for the dispersion relations of collective modes and two-point fermionic correlation functions as functionals of the potentials. Finally, as an example, we compute the momentum distribution for the case in which electrons and impurities are coupled through spin and spin-current densities only. The formulae we get suggest that our formalism could be useful in order to seek for a mechanism able to restore Fermi liquid behavior.
format Articulo
Preprint
author Naón, Carlos María
Reichenbach, María Cecilia von
Trobo, Marta Liliana
author_facet Naón, Carlos María
Reichenbach, María Cecilia von
Trobo, Marta Liliana
author_sort Naón, Carlos María
title Field-theoretical approach to non-local interactions: 1D electrons and fermionic impurities
title_short Field-theoretical approach to non-local interactions: 1D electrons and fermionic impurities
title_full Field-theoretical approach to non-local interactions: 1D electrons and fermionic impurities
title_fullStr Field-theoretical approach to non-local interactions: 1D electrons and fermionic impurities
title_full_unstemmed Field-theoretical approach to non-local interactions: 1D electrons and fermionic impurities
title_sort field-theoretical approach to non-local interactions: 1d electrons and fermionic impurities
publishDate 1997
url http://sedici.unlp.edu.ar/handle/10915/123182
work_keys_str_mv AT naoncarlosmaria fieldtheoreticalapproachtononlocalinteractions1delectronsandfermionicimpurities
AT reichenbachmariaceciliavon fieldtheoreticalapproachtononlocalinteractions1delectronsandfermionicimpurities
AT trobomartaliliana fieldtheoreticalapproachtononlocalinteractions1delectronsandfermionicimpurities
bdutipo_str Repositorios
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