One-dimensional Kondo lattice model as a Tomonaga-Luttinger liquid

TL;DR

This paper demonstrates that the one-dimensional Kondo lattice model in its paramagnetic phase behaves as a spin-1/2 Tomonaga-Luttinger liquid, with specific velocity and interaction parameter estimates.

Contribution

It establishes the universality class of the 1D Kondo lattice model and provides estimates for key parameters like v_s/v_c and K_c.

Findings

The model belongs to the spin-1/2 Tomonaga-Luttinger liquid universality class.

The ratio v_s/v_c and K_c are estimated to be of order (T_K/E_F)^{1/2}.

F-electron spins participate in the Fermi sea filling.

Abstract

Arguments are presented that in the one-dimensional Kondo lattice model f-electron spins participate in filling of the Fermi sea. It is shown that in its paramagnetic phase this model belongs to the spin-1/2 Tomonaga-Luttinger liquid universality class. The ratio of the spin and charge velocities v_s/v_c and K_c are estimated to be of the order of (T_K/E_F)^{1/2}.