Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Band and correlated insulators of cold fermions in a mesoscopic lattice   We investigate the transport properties of neutral, fermionic atoms passing
through a one-dimensional quantum wire containing a mesoscopic lattice. The
lattice is realized by projecting individually controlled, thin optical
barriers on top of a ballistic conductor. Building an increasingly longer
lattice, one site after another, we observe and characterize the emergence of a
band insulating phase, demonstrating control over quantum-coherent transport.
We explore the influence of atom-atom interactions and show that the insulating
state persists as contact interactions are tuned from moderately to strongly
attractive. Using bosonization and classical Monte-Carlo simulations we analyze
such a model of interacting fermions and find good qualitative agreement with
the data. The robustness of the insulating state supports the existence of a
Luther-Emery liquid in the one-dimensional wire. Our work realizes a tunable,
site-controlled lattice Fermi gas strongly coupled to reservoirs, which is an
ideal test bed for non-equilibrium many-body physics.

6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat