Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Novel Computational Method for Band Structures of Dispersive Photonic
  Crystals   We propose a new method to compute band structures of dispersive photonic
crystals. It can treat arbitrarily frequency-dependent, lossy or lossless
materials. The band structure problem is first formulated as the eigenvalue
problem of an operator function. Finite elements are then used for
discretization. Finally, the spectral indicator method is employed to compute
the eigenvalues. Numerical examples in both the TE and TM cases are presented
to show the effectiveness. There exist very few examples in literature for the
TM case and three examples in this paper can serve as benchmarks.

8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
18
The categories of this paper are: econ