Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Off-diagonal Bethe ansatz solutions of the anisotropic spin-1/2 chains
  with arbitrary boundary fields   The anisotropic spin-1/2 chains with arbitrary boundary fields are
diagonalized with the off-diagonal Bethe ansatz method. Based on the properties
of the R-matrix and the K-matrices, an operator product identity of the
transfer matrix is constructed at some special points of the spectral
parameter. Combining with the asymptotic behavior (for XXZ case) or the
quasi-periodicity properties (for XYZ case) of the transfer matrix, the
extended T-Q ansatzs and the corresponding Bethe ansatz equations are derived.

26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga