Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Functional Renormalization Group treatment of the 0.7-analog in quantum
  point contacts   We use a recently developed fRG method (extendend Coupled-Ladder
Approximation) to study the 0.7-analog in quantum point contacts, arising at
the crossing of the 1st and 2nd band at suf- ficiently high magnetic fields. We
reproduce the main features of the experimentally observed magnetic field
dependence of the conductance at the 0.7-analog, using a QPC model with two
bands and short-range interactions. In particular, we reproduce the fact that
this dependence is quali- tatively different, depending on whether the analog
is approached from higher or lower magnetic fields. We show that this effect
can be explained qualitatively within a simple Hartree picture for the
influence of the lowest electrons.

14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con