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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_σ/v_ρ and K_ρ are estimated to be of the order of (TK/εF)1/2.
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Shibata et al. (1997) studied this question.
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