Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transport signatures in topological systems coupled to AC fields   We study the transport properties of a topological system coupled to an AC
electric field by means of Floquet-Keldysh formalism. We consider a
semi-infinite chain of dimers coupled to a semi-infinite metallic lead, and
obtain the density of states and current when the system is out of equilibrium.
Our formalism is non-perturbative and allows us to explore, in the
thermodynamic limit, a wide range of regimes for the AC field, arbitrary values
of the coupling strength to the metallic contact and corrections to the
wide-band limit. We find that hybridization with the contact can change the
dimerization phase, and that the current dependence on the field amplitude can
be used to discriminate between them. We also show the appearance of side-bands
and non-equilibrium zero-energy modes, characteristic of Floquet systems. Our
results directly apply to the stability of non-equilibrium topological phases,
when transport measurements are used for their detection.

21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-ex
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The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph