Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Full-wave parallel dispersive finite-difference time-domain modeling of
  three-dimensional electromagnetic cloaking structures   A parallel dispersive finite-difference time-domain (FDTD) method for the
modeling of three-dimensional (3-D) electromagnetic cloaking structures is
presented in this paper. The permittivity and permeability of the cloak are
mapped to the Drude dispersion model and taken into account in FDTD simulations
using an auxiliary differential equation (ADE) method. It is shown that the
correction of numerical material parameters and the slow switching-on of source
are necessary to ensure stable and convergent single-frequency simulations.
Numerical results from wideband simulations demonstrate that waves passing
through a three-dimensional cloak experience considerable delay comparing with
the free space propagations, as well as pulse broadening and blue-shift
effects.

18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph