Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Solutions in folded geometries, and associated cloaking due to anomalous
  resonance   Solutions for the fields in a coated cylinder where the core radius is bigger
than the shell radius are seemingly unphysical, but can be given a physical
meaning if one transforms to an equivalent problem by unfolding the geometry.
In particular the unfolded material can act as an impedance matched hyperlens,
and as the loss in the lens goes to zero finite collections of polarizable line
dipoles lying within a critical region surrounding the hyperlens are shown to
be cloaked having vanishingly small dipole moments. This cloaking, which occurs
both in the folded geometry and the equivalent unfolded one, is due to
anomalous resonance, where the collection of dipoles generates an anomalously
resonant field, which acts back on the dipoles to essentially cancel the
external fields acting on them.

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The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
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The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org