Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Branched flow of intense laser light in porous media   Branched flow is an interesting phenomenon that can occur in diverse systems.
It is usually considered a linear phenomenon in that the flow does not alter
the medium properties. Branched flow of laser light has recently been
discovered. This provides an opportunity for investigating whether nonlinear
branched flow can also occur. Here we found by two-dimensional particle-in-cell
simulations that intense laser light propagating in a porous medium can indeed
form light branches. In particular, dynamic ionization induced by the laser can
enhance the density variations along the laser path and thus the light
branching. However, too-intense lasers can suppress branching by smoothing the
electron density. The branching properties and the location of the first
branching point agrees well with an analysis based on a Schr\"odinger-like
equation for the laser electric field. Branched flow of intense light in plasma
opens up a new realm of intense laser-matter interaction, which would arouse
broad interest in many research areas.

35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom