Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pair density wave and reentrant superconducting tendencies originating
  from valley polarization   We investigate superconducting pairing tendencies of a two-dimensional
electron fluid with both valley and spin degrees of freedom, both without and
in the presence of an in-plane magnetic field. We present suggestive
theoretical arguments that spontaneous valley polarization can lead to exotic
singlet superconducting tendencies, including pair-density-wave order at zero
field and re-entrant superconductivity at high field. We also find a reduced
magnetic response in the polarized valley, which allows a finite violation of
the Pauli limit. These results are obtained by a mean-field approach to a
generalized $t$-$J$ model on a triangular lattice and in the dilute limit.
Phenomenological similarities to results of recent magic-angle twisted trilayer
graphene experiments are noted.

25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
16
The categories of this paper are: stat