Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transport signatures of a Floquet topological transition at the helical
  edge   The manipulation of the helical edge states of two-dimensional topological
insulators is crucial for the development of technological applications.
Recently, an important step forward, namely, the experimental realization of a
quantum point contact between helical edges, has been accomplished. We
theoretically predict that such a quantum point contact, in the presence of a
time periodic applied electric field, is characterized by a topological quantum
phase transition in the Floquet spectrum. Moreover, we show that it is possible
to detect this dynamical topological quantum phase transition by a bare
conductance measurements.

7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom