Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Duality in N=2 SUSY Gauge Theories: low-energy effective action and BPS
  spectra   After an introduction to N=2 susy Yang-Mills theories, I review in some
detail, for the SU(2) gauge group, how the low-energy effective action is
obtained using duality and the constraints arising from the supersymmetry. Then
I discuss how knowledge of this action, duality and certain discrete symmetries
allow us to determine the spectra of stable BPS states at any point in moduli
space. This is done for gauge group SU(2), without and with fundamental matter
hypermultiplets which may have non-vanishing bare masses. In the latter case
non-trivial four-dimensional CFTs arise at Argyres-Douglas type points.

13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
18
The categories of this paper are: econ
16
The categories of this paper are: stat
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con