Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phase diagram of a class of spin-triplet ferromagnetic superconductors   We investigate thermodynamic phases, including the phase of coexistence of
superconductivity and ferromagnetism, the possible phase transitions of first
and second order, and the shape of the phase diagram in mean-field
approximation for a phenomenological model of spin-triplet ferromagnetic
superconductors. The results are discussed in view of application to metallic
ferromagnets as UGe$_2$, ZrZn$_2$, URhGe, and Fe.

22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
19
The categories of this paper are: eess
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph