Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bethe Ansatz solution of the small polaron with nondiagonal boundary
  terms   The small polaron with generic, nondiagonal boundary terms is investigated
within the framework of quantum integrability. The fusion hierarchy of the
transfer matrices and its truncation for particular values of the anisotropy
parameter are both employed, so that the spectral problem is formulated in
terms of a TQ equation. The solution of this equation for generic boundary
conditions is based on a deformation of the diagonal case. The eigenvalues of
the model are extracted and the corresponding Bethe Ansatz equations are
presented. Finally, we comment on the eigenvectors of the model and explicitly
compute the eigenstate of the model which evolves into the Fock vacuum when the
off-diagonal boundary terms are switched off.

1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th