Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Reentrant behaviour in Landau Fermi liquids with spin-split Pomeranchuk
  instabilities   We study the effects of spin-antisymmetric interactions on the stability of a
Landau-Fermi liquid on the square lattice, using the generalized Pomeranchuk
method for two-dimensional lattice systems. In particular, we analyze
interactions that could induce instabilities of the so called spin-split type,
that is when spin-up and spin-down Fermi surfaces are displaced with respect to
each other. The phase space is studied as a function of the strength of the
interaction $V$, the electron chemical potential $\mu$ and an external magnetic
field $h$. We find that such interactions produce in general an enhancement of
the instability region of the Landau-Fermi liquid. More interestingly, in
certain regions of the $V$-$\mu$ phase space, we find a reentrant behaviour as
a function of the magnetic field $h$, similar to that found in recent
experiments, e.g. in URu$_2$Si$_2$ and Sr$_3$Ru$_2$O$_7$.

27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
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The categories of this paper are: eess
21
The categories of this paper are: adap-org