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- W2023272031 abstract "We develop a nonperturbative zero-temperature theory for the dynamic response functions of interacting one-dimensional spin-1/2 fermions. In contrast to the conventional Luttinger liquid theory, we take into account the nonlinearity of the fermion dispersion exactly. We calculate the power-law singularities of the spectral function and the charge and spin density structure factors for arbitrary momenta and interaction strengths. The exponents characterizing the singularities are functions of momenta and differ significantly from the predictions of the linear Luttinger liquid theory. We generalize the notion of the spin-charge separation to the nonlinear spectrum. This generalization leads to phenomenological relations between threshold exponents and the threshold energy." @default.
- W2023272031 created "2016-06-24" @default.
- W2023272031 creator A5044026402 @default.
- W2023272031 creator A5083764310 @default.
- W2023272031 creator A5085165094 @default.
- W2023272031 date "2010-12-03" @default.
- W2023272031 modified "2023-10-10" @default.
- W2023272031 title "Spin-charge separation in one-dimensional fermion systems beyond Luttinger liquid theory" @default.
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- W2023272031 doi "https://doi.org/10.1103/physrevb.82.245104" @default.
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