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https://repositorio.ufrn.br/handle/123456789/28805| Título: | CP1|1 nonlinear sigma model vs strong electron correlations |
| Autor(es): | Kochetov, Evgueny A. Ferraz Filho, Álvaro |
| Palavras-chave: | t − J model of strongly correlated electrons;su(2|1) coherent state;CP1|1 nonlinear sigma model |
| Data do documento: | Jun-2017 |
| Editor: | Elsevier Inc. |
| Referência: | KOCHETOV, E.A.; FERRAZ FILHO, Álvaro. CP1|1nonlinear sigma model vs strong electron correlations. Annals Of Physics, [s.l.], v. 381, p. 1-16, jun. 2017. ISSN 0003-4916. DOI https://doi.org/10.1016/j.aop.2017.03.017. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0003491617300933?via%3Dihub. Acesso em: 16 abr. 2020. |
| Resumo: | The nonlinear sigma model targeted on the coset supermanifold CP1|1 = SU(2|1)/U(1|1) is derived in an attempt to describe the quasiclassical low-energy effective action for the doped t−J model at the SUSY point, J = 2t. In spite of the fact that the supermanifold CP1|1 indeed appears as the phase space of the strongly correlated electrons, the canonical CP1|1 nonlinear sigma model (NLSM) is unable to capture the physics of strong correlations displayed by the SUSY t − J model at any finite doping. This is due to the fact that, in this regime, the doping itself cannot be self-consistently incorporated into the CP1|1 NLSM. |
| Abstract: | The nonlinear sigma model targeted on the coset supermanifold CP1|1 = SU(2|1)/U(1|1) is derived in an attempt to describe the quasiclassical low-energy effective action for the doped t−J model at the SUSY point, J = 2t. In spite of the fact that the supermanifold CP1|1 indeed appears as the phase space of the strongly correlated electrons, the canonical CP1|1 nonlinear sigma model (NLSM) is unable to capture the physics of strong correlations displayed by the SUSY t − J model at any finite doping. This is due to the fact that, in this regime, the doping itself cannot be self-consistently incorporated into the CP1|1 NLSM |
| URI: | https://repositorio.ufrn.br/jspui/handle/123456789/28805 |
| ISSN: | 0003-4916 |
| Aparece nas coleções: | CCET - DFTE - Artigos publicados em periódicos |
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