Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermodynamics of Antiferromagnetic Solids in Magnetic Fields   We analyze the thermodynamic properties of antiferromagnetic solids subjected
to a combination of mutually orthogonal uniform magnetic and staggered fields.
Low-temperature series for the pressure, order parameter and magnetization up
to two-loop order in the effective expansion are established. We evaluate the
self-energy and the dispersion relation of the dressed magnons in order to
discuss the impact of spin-wave interactions on thermodynamic observables.

17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an