Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-charge separation and Kondo effect in transport through a 1D
  Mott-Hubbard insulator   We study low energy spin and charge transport through a 1D Mott-Hubbard
insulator of finite length $L$ attached to Fermi liquid reservoirs
characterized by different chemical potentials for electrons of opposite spin
polarizations as it happens in quantum spin Hall insulators. We calculate the
average currents (charge and spin) and their correlators and demonstrate how a
transition induced by the reservoirs to the low energy Fermi liquid regime
results in breakdown of the spin-charge separation, which is visible in the
presence of the spin dependent voltages and a weak one electron scattering in
the system. These calculations are carried out under assumption that the
Hubbard gap 2M is large enough: $M > T_L \equiv v_c/L$ ($v_c$: charge velocity
in the wire) and the scattering rate $\Gamma_s \ll T_L$. Relation of these
results to Kondo dot transport in the Toulouse limit is also clarified.

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The categories of this paper are: math
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
9
The categories of this paper are: nlin