Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Little Higgs Models: New Approaches to the Hierarchy Problem   In this note we present a review of the little Higgs models that stabilize
the electroweak by realizing the Standard Model Higgs as a pseudo-Goldstone
boson.

20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ