Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the construction of pseudo-Hermitian Hamiltonians by means of
  similarity transformations   We generalize a recently proposed approach for the construction of
pseudo-Hermitian Hamiltonians with real spectra. Present technique is based on
a simple and straightforward similarity transformation of the coordinate and
momentum.

5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio