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• W2018400711 abstract "We consider the effect of the curvature in fermionic dispersion on the observable properties of Luttinger liquid (LL). We use the bosonization technique where the curvature is irrelevant perturbation, describing the decay of LL bosons (plasmon modes). When possible, we establish the correspondence between the bosonization and the fermionic approach. We analyze modifications in density correlation functions due to curvature at finite temperatures, T. The most important application of our approach is the analysis of the Coulomb drag by small momentum transfer between two LL, which is only possible due to curvature. Analyzing the a.c. transconductivity in the one-dimensional drag setup, we confirm the results by Pustilnik et al. for T-dependence of drag resistivity, R_{12} ~ T^2 at high and R_{12} ~ T^5 at low temperatures. The bosonization allows for treating both intra- and inter-wire electron-electron interactions in all orders, and we calculate exact prefactors in low-T drag regime. The crossover temperature between the two regimes is T_1 ~ E_F Delta, with Delta relative difference in plasmon velocities. We show that Delta neq 0 even for identical wires, due to lifting of degeneracy by interwire interaction, U_{12}, leading to crossover from R_{12} ~ U_{12}^2 T^2 to R_{12} ~ T^5/U_{12} at T ~ U_{12}." @default.
• W2018400711 created "2016-06-24" @default.
• W2018400711 creator A5044354821 @default.
• W2018400711 date "2007-08-16" @default.
• W2018400711 modified "2023-09-27" @default.
• W2018400711 title "Luttinger liquids with curvature: Density correlations and Coulomb drag effect" @default.
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• W2018400711 doi "https://doi.org/10.1103/physrevb.76.085327" @default.
• W2018400711 hasPublicationYear "2007" @default.
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