Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-Charge separation in a model of two coupled chains   A model of interacting electrons living on two chains coupled by a transverse
hopping $t_\perp$, is solved exactly by bosonization technique. It is shown
that $t_\perp$ does modify the shape of the Fermi surface also in presence of
interaction, although charge and spin excitations keep different velocities
$u_\rho$, $u_\sigma$. Two different regimes occur: at short distances, $x\ll
\xi = (u_\rho - u_\sigma)/4t_\perp$, the two chain model is not sensitive to
$t_\perp$, while for larger separation $x\gg \xi$ inter--chain hopping is
relevant and generates further singularities in the electron Green function
besides those due to spin-charge decoupling. (2 figures not included. Figure
requests: FABRIZIO@ITSSISSA)

1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int