The thermodynamical limit of strongly correlated systems obtained from small-size-cluster calculations

We study the properties of strongly correlated systems, calculating the self-energy of the electronic propagator of small-size clusters. We focus our attention on the one-dimensional Hubbard model. It is shown that for adequate sizes and boundary conditions, the self-energy of such a small cluster p...

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Autor principal: Chiappe, Guillermo
Otros Autores: Busser, C., Anda, E.V, Ferrari, Valeria Paola
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 1999
Acceso en línea:Registro en Scopus
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Registro en la Biblioteca Digital
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100 1 |a Chiappe, Guillermo 
245 1 4 |a The thermodynamical limit of strongly correlated systems obtained from small-size-cluster calculations 
260 |c 1999 
270 1 0 |m Chiappe, G.; Departamento de Física, Pontificia Universidade Catolica do Rio de Janeiro, Caixa Postal 38071, 22452-970, Rio de Janeiro, Brazil 
504 |a Hubbard, J., (1963) Proc. R. Soc. A, 276, p. 238 
504 |a Gutzwiller, M., (1963) Phys. Rev. Lett., 10, p. 159 
504 |a Lieb, E.H., Wu, F.Y., (1968) Phys. Rev. Lett., 20, p. 1445 
504 |a Dzyaloshinski, I.E., Larkin, A.I., (1974) Sov. Phys. - JETP, 38, p. 202 
504 |a Emery, V.J., (1979) Highly Conducting One Dimensional Solids, p. 247. , ed J T Devreese, R P Evrard and V E van Doren (New York: Plenum) 
504 |a Solyom, J., (1979) Adv. Phys., 28, p. 201 
504 |a Voit, J., (1995) Rep. Prog. Phys., 58, p. 977 
504 |a Bourbonnais, C., Caron, L.G., (1988) Europhys. Lett., 5, p. 209 
504 |a Frahm, H., Korepin, V.E., (1990) Phys. Rev. B, 42, p. 10553 
504 |a Frahm, H., Korepin, V.E., (1991) Phys. Rev. B, 43, p. 5653 
504 |a Finkel'stein, A.M., (1977) JEPT Lett., 25, p. 73 
504 |a Giamarchi, T., Shulz, H.J., (1989) Phys. Rev. B, 39, p. 4620 
504 |a Dagotto, E., (1994) Rev. Mod. Phys., 66, p. 763 
504 |a Parola, A., Sorella, S., (1992) Phys. Rev. B, 45, pp. R13156 
504 |a Santini, P., Andreani, L.C., Beck, H., (1993) Phys. Rev. B, 47, pp. R1130 
506 |2 openaire  |e Política editorial 
520 3 |a We study the properties of strongly correlated systems, calculating the self-energy of the electronic propagator of small-size clusters. We focus our attention on the one-dimensional Hubbard model. It is shown that for adequate sizes and boundary conditions, the self-energy of such a small cluster possesses the correct singular behaviour in the vicinity of the Fermi level for all values of the intra-atomic electron-electron interaction parameter U. The charge-transfer gap and other physical properties of the system are obtained at the thermodynamic limit. The survival of a single-pole singularity at w = 0 for the infinite-system self-energy constitutes a criterion for establishing whether the system is an insulator or a metal. © 1999 IOP Publishing Ltd.  |l eng 
593 |a Departamento de Física, Pontificia Universidade Catolica do Rio de Janeiro, Caixa Postal 38071, 22452-970, Rio de Janeiro, Brazil 
593 |a Departamento de Física, Universidad de Buenos Aires, Pabellón I, 1428 Capital Federal, Buenos Aires, Argentina 
700 1 |a Busser, C. 
700 1 |a Anda, E.V. 
700 1 |a Ferrari, Valeria Paola 
773 0 |d 1999  |g v. 11  |h pp. 5237-5244  |k n. 27  |p J Phys Condens Matter  |x 09538984  |w (AR-BaUEN)CENRE-311  |t Journal of Physics Condensed Matter 
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