Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum phases in $p$-orbital degenerated attractive 1D fermionic
  optical lattices   We examine quantum phases emerged by double degeneracy of $p$-orbital bands
in attractive atomic Fermi gases loaded on a 1D optical lattice. Our numerical
simulations by the density-matrix renormalization group predict the emergence
of a state with a charge excitation gap, the Haldane insulator phase. A mapping
onto an effective spin-$1$ model reveals its physical origin. Moreover, we show
that population imbalance leads to richer diversity of the quantum phases,
including a phase-separated polarized state. Finally, we study the effects of
harmonic trap potential in this 1D chain.

11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga