Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Functional renormalization group for commensurate antiferromagnets:
  Beyond the mean-field picture   We present a functional renormalization group (fRG) formalism for interacting
fermions on lattices that captures the flow into states with commensurate
spin-density wave order. During the flow, the growth of the order parameter is
fed back into the flow of the interactions and all modes can be integrated out.
This extends previous fRG flows in the symmetric phase that run into a
divergence at a nonzero RG scale, i.e., that have to be stopped at the ordering
scale. We use the corresponding Ward identity to check the accuracy of the
results. We apply our new method to a model with two Fermi pockets that have
perfect particle-hole nesting. The results obtained from the fRG are compared
with those in random phase approximation.

31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin