Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetic crystals and helical liquids in alkaline-earth fermionic gases   The joint action of a synthetic gauge potential and of atomic contact
repulsion in a one-dimensional alkaline-earth(-like) fermionic gas with nuclear
spin I leads to the existence of a hierarchy of fractional insulating and
conducting states with intriguing properties. We unveil the existence and the
features of those phases by means of both analytical bosonization techniques
and numerical methods based on the density-matrix renormalization group
algorithm. In particular, we show that the gapless phases can support helical
modes, whereas the gapped states, which appear under certain conditions, are
characterised both by density and magnetic order. Several distinct features
emerge solely for spin I larger than 1/2, thus making their study with
cold-atoms unique. We will finally argue that these states are related to the
properties of an unconventional fractional quantum Hall effect in the
thin-torus limit. The properties of this hierarchy of states can be
experimentally studied in state-of-the-art cold-atom laboratories.

3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph