We demonstrate that in a wide range of temperatures Coulomb drag between twoweakly coupled quantum wires is dominated by processes with a small interwiremomentum transfer. Such processes, not accounted for in the conventionalLuttinger liquid theory, cause drag only because the electron dispersionrelation is not linear. The corresponding contribution to the drag resistancescales with temperature as T^2 if the wires are identical, and as T^5 if thewires are different.
展开▼
