Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Goldstone Boson Normal Coordinates   The phenomenon of spontaneous symmetry breaking is well known. It is known to
be accompanied with the appearance of the `Goldstone boson'. In this paper we
construct the canonical coordinates of the Goldstone boson, for quantum spin
systems with short range as well as long range interactions.

5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas