engleski

4kF correlations in 1d systems revisited,

The 4kF response function chi_4 is calculated for the 1d electron system in the presence of of the Umklapp electron-electron scattering. It is shown that the power law behavior of chi_4 on high temperatures and frequencies gives place to the saturation below the Umklapp gap Delta_3.

one-dimensional electron gas; Umklapp electron-electron scattering; Luttinger liquid

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