Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Relativistic Plasma Polarizer: Impact of Temperature Anisotropy on
  Relativistic Transparency   3D particle-in-cell simulations demonstrate that the enhanced transparency of
a relativistically hot plasma is sensitive to how the energy is partitioned
between different degrees of freedom. For an anisotropic electron distribution,
propagation characteristics, like the critical density, will depend on the
polarization of the electromagnetic wave. Despite the onset of the Weibel
instability in such plasmas, the anisotropy can persist long enough to affect
laser propagation. This plasma can then function as a polarizer or a waveplate
to dramatically alter the pulse polarization.

28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int