2003
DOI: 10.1590/s0103-97332003000100002
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Introduction to bosonization

Abstract: This is a pedagogical introduction to the general technique of bosonization of one-dimensional systems starting from scratch and assuming very little besides basic quantum mechanics and second quantization. The formalism is developed in a self-contained fashion and applied to the spinless and spin-½ ¾ Luttinger models, working out both single and two particle correlation functions. The implications of these results for the specific cases of the (anisotropic) Heisenberg and the Hubbard models are discussed. Alt… Show more

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Cited by 60 publications
(59 citation statements)
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“…the electron density on the r channel and g i coupling constants referring to inter-(i = 4) and intrachannel (i = 2) interactions [2,[62][63][64]. The QD is represented in terms of a spin-up electron level 0 , measured with respect to the Fermi energy,…”
Section: Setup and General Modelmentioning
confidence: 99%
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“…the electron density on the r channel and g i coupling constants referring to inter-(i = 4) and intrachannel (i = 2) interactions [2,[62][63][64]. The QD is represented in terms of a spin-up electron level 0 , measured with respect to the Fermi energy,…”
Section: Setup and General Modelmentioning
confidence: 99%
“…Electron-electron interactions can be properly handled using well-known bosonization techniques [2,62]. The interacting helical Hamiltonian can be diagonalized introducing proper chiral bosonic fieldsφ η (x,t), with η = ± referring to the direction of propagation (right and left, respectively).…”
Section: B Dealing With E-e Interactionsmentioning
confidence: 99%
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“…As amplitudes F 's são escolhidas para que a excitação tenha uma frequência bem definida ω q , o que é imposto pela condição 20) que é a relação satisfeita por um operador de criação de um oscilador harmônico de frequência ω q .…”
Section: Setor De Spin No Regime Fortemente Interagente: Mágnonsunclassified
“…Um trabalho de Kun Yang discute a transição no contexto de sistemas unidimensionais (16). Seu ponto de partida é a fase líquido de Luttinger de sistemas unidimensionais, que tem como característica marcante a separação dos setores de spin e carga (17)(18)(19)(20). Yang trata uma instabilidade no setor de spin do modelo de Luttinger provocada por uma mudança de sinal na velocidade dos spinons e deriva um Hamiltoniano diferente ao reter termos irrelevantes no ponto fixo do líquido de Luttinger, mas importantes para garantir a estabilidade do modelo após a transição.…”
Section: Capítulo 1 Introduçãounclassified