Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Topological quantum phase transition in strongly correlated Kondo
  insulators in 1D   We investigate, by means of a field-theory analysis combined with the
density-matrix renormalization group (DMRG) method, a theoretical model for a
strongly correlated quantum system in one dimension realizing a
topologically-ordered Haldane phase ground state. The model consists of a
spin-1/2 Heisenberg chain coupled to a tight-binding chain via two competing
Kondo exchange couplings of different type: a "s-wave" Kondo coupling
($J^s_{K}$), and a less common "p-wave" ($J^p_{K}$) Kondo coupling. While the
first coupling is the standard Kondo interaction studied in many
condensed-matter systems, the latter has been recently introduced by Alexandrov
and Coleman [Phys. Rev. B 90, 115147 (2014)] as a possible mechanism leading to
a topological Kondo-insulating ground state in one dimension. As a result of
this competition, a topological quantum phase transition (TQPT) occurs in the
system for a critical value of the ratio $J^s_{K}/J^p_{K}$, separating a
(Haldane-type) topological phase from a topologically trivial ground state
where the system can be essentially described as a product of local singlets.
We study and characterize the TQPT by means for the magnetization profile, the
entanglement entropy and the full entanglement spectrum of the ground state.
Our results might be relevant to understand how topologically-ordered phases of
fermions emerge in strongly interacting quantum systems.

5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
19
The categories of this paper are: eess
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an