Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Algebraic Bethe ansatz for integrable Kondo impurities in the
  one-dimensional supersymmetric t-J model   An integrable Kondo problem in the one-dimensional supersymmetric t-J model
is studied by means of the boundary supersymmetric quantum inverse scattering
method. The boundary $K$ matrices depending on the local moments of the
impurities are presented as a nontrivial realization of the graded reflection
equation algebras in a two-dimensional impurity Hilbert space. Further,the
model is solved by using the algebraic Bethe ansatz method and the Bethe ansatz
equations are obtained.

6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an