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dc.date.accessioned | 2021-12-15T15:10:49Z | |
dc.date.available | 2021-12-15T15:10:49Z | |
dc.date.issued | 2002 | |
dc.identifier.uri | http://sedici.unlp.edu.ar/handle/10915/129635 | |
dc.description.abstract | We extend a non-local and non-covariant version of the Thirring model in order to describe a many-body system with backward and umklapp scattering processes. We express the vacuum to vacuum functional in terms of a non-trivial fermionic determinant. Using path-integral methods we find a bosonic representation for this determinant which allows us to obtain an effective action for the collective excitations of the system. By introducing a non-local version of the self-consistent harmonic approximation, we get an expression for the gap of the charge-density excitations as functional of arbitrary electron–electron potentials. As an example we also consider the case of a non-contact umklapp interaction. | en |
dc.format.extent | 514-528 | es |
dc.language | en | es |
dc.subject | Field theory | es |
dc.subject | Non-local | es |
dc.subject | Functional bosonization | es |
dc.subject | Many body | es |
dc.subject | Two-dimensional | es |
dc.subject | Luttinger liquid | es |
dc.title | Non-local Thirring model with backward and umklapp interactions | en |
dc.type | Articulo | es |
sedici.identifier.other | arXiv:hep-th/0112057 | es |
sedici.identifier.other | doi:10.1016/s0550-3213(02)00399-1 | es |
sedici.identifier.issn | 0550-3213 | es |
sedici.creator.person | Fernández, Victoria Inés | es |
sedici.creator.person | Iucci, Carlos Aníbal | es |
sedici.creator.person | Naón, Carlos María | es |
sedici.subject.materias | Física | es |
sedici.description.fulltext | true | es |
mods.originInfo.place | Instituto de Física La Plata | es |
mods.originInfo.place | Consejo Nacional de Investigaciones Científicas y Técnicas | es |
sedici.subtype | Articulo | es |
sedici.rights.license | Creative Commons Attribution 4.0 International (CC BY 4.0) | |
sedici.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
sedici.description.peerReview | peer-review | es |
sedici.relation.journalTitle | Nuclear Physics B | es |
sedici.relation.journalVolumeAndIssue | vol. 636, no. 3 | es |